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1.
J Xray Sci Technol ; 32(3): 725-734, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38189739

RESUMO

BACKGROUND: To reduce radiation dose and subsequent risks, several legislative documents in different countries describe the need for Diagnostic Reference Levels (DRLs). Spinal radiography is a common and high-dose examination. Therefore, the aim of this work was to establish the DRL for Computed Tomography (CT) examinations of the spine in healthcare institutions across Jordan. METHODS: Data was retrieved from the picture archiving and communications system (PACS), which included the CT Dose Index (CTDI (vol) ) and Dose Length Product (DLP). The median radiation dose values of the dosimetric indices were calculated for each site. DRL values were defined as the 75th percentile distribution of the median CTDI (vol)  and DLP values. RESULTS: Data was collected from 659 CT examinations (316 cervical spine and 343 lumbar-sacral spine). Of the participants, 68% were males, and the patients' mean weight was 69.7 kg (minimum = 60; maximum = 80, SD = 8.9). The 75th percentile for the DLP of cervical and LS-spine CT scans in Jordan were 565.2 and 967.7 mGy.cm, respectively. CONCLUSIONS: This research demonstrates a wide range of variability in CTDI (vol)  and DLP values for spinal CT examinations; these variations were associated with the acquisition protocol and highlight the need to optimize radiation dose in spinal CT examinations.


Assuntos
Doses de Radiação , Coluna Vertebral , Tomografia Computadorizada por Raios X , Humanos , Jordânia , Tomografia Computadorizada por Raios X/métodos , Tomografia Computadorizada por Raios X/normas , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Coluna Vertebral/diagnóstico por imagem , Idoso , Benchmarking , Níveis de Referência de Diagnóstico , Adolescente , Adulto Jovem , Criança , Idoso de 80 Anos ou mais
2.
Med Teach ; : 1-7, 2023 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-38092027

RESUMO

Objective: To determine if student radiographers and radiation therapists experience harassment (verbal, physical or sexual) while on clinical placement and their awareness of policies in place to report such incidents.Methods: An online questionnaire developed from the World Health Organisation's questionnaire on workplace violence in healthcare and the higher education authority (HEA) national survey of student experiences of sexual violence and harassment in Irish HEIs was used. Undergraduate and postgraduate diagnostic radiography and radiation therapy students in the Republic of Ireland to be included and have completed a minimum of four weeks of clinical placement. Our of 256 students, 98 filled out the survey.Results: Forty-one per cent (n = 40) of students reported experiencing at least one incident of harassment. Thirteen per cent reported experiencing two forms of harassment, and 2 students reported experiencing verbal, physical and sexual harassment. Verbal harassment (n = 33) and sexual (n = 16) were the most common form of harassment while physical harassment was experienced 7 participants. Ninety-one per cent (n = 88) of participants reported they don't believe they have received sufficient training in dealing with incidents of physical, verbal or sexual harassment.Conclusion: Harassment of student radiographers and radiation therapists is occurring while on placement. Male patients are the modal perpetrator, and most incidents go unreported. Students are not empowered to report an incident of harassment and are sometimes unaware of how to report harassment.

3.
Pediatr Radiol ; 52(12): 2421-2430, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35511256

RESUMO

BACKGROUND: Chest radiography after peripherally inserted central catheter insertion in infants is the reference standard method for verifying catheter tip position. The utilisation of ultrasound (US) for catheter placement confirmation in the neonatal and paediatric population has been the focus of many recent studies. OBJECTIVE: In this systematic review we investigated the diagnostic accuracy of US for peripherally inserted central catheter tip confirmation in infants in the neonatal intensive care unit (NICU) MATERIALS AND METHODS: We conducted a systematic literature search of multiple databases. The study selection yielded eight articles, all of which had acceptable quality and homogeneity for inclusion in the meta-analysis. Sensitivity and specificity values were reported together with their respective 95% confidence intervals (CI). RESULTS: After synthesising the eligible studies, we found that US had a sensitivity of 95.2% (95% CI 91.9-97.4%) and specificity of 71.4% (95% CI 59.4-81.6%) for confirming catheter tip position. CONCLUSION: Analyses indicated that US is an excellent imaging test for localising catheter tip position in the NICU when compared to radiography. Ultrasonography is a sensitive, specific and timely imaging modality for confirming PICC tip position. In cases where US is unable to locate malpositioned PICC tips, a chest or combined chest-abdominal radiograph should be performed.


Assuntos
Cateterismo Venoso Central , Cateterismo Periférico , Cateteres Venosos Centrais , Recém-Nascido , Lactente , Criança , Humanos , Unidades de Terapia Intensiva Neonatal , Cateterismo Venoso Central/métodos , Cateterismo Periférico/métodos , Ultrassonografia , Catéteres
4.
J Radiol Prot ; 42(1)2022 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-34891143

RESUMO

Diagnostic reference levels (DRLs) in digital mammography (DM) serve as a useful benchmark for dose monitoring and optimisation, allowing comparison amongst countries, institutions and mammography units. A systematic review of DRLs in DM, published in 2014, reported a lack of consistent and internationally accepted protocol in DRLs establishment, thereby resulting in wide variations in methodologies which complicates comparability between studies. In 2017, the International Commission of Radiation Protection (ICRP) published additional guidelines and recommendations to provide clarity in the protocol used in DRLs establishment. With the continuing evolvement of technology, optimisation of examinations and updates in guidelines and recommendations, DRLs should be revised at regular intervals. This systematic review aims to provide an update and identify a more consistent protocol in the methodologies used to establish DRLs. Searches were conducted through Web of Science, PubMed-MEDLINE, ScienceDirect, CINAHL and Google Scholar, which resulted in 766 articles, of which 19 articles were included after screening. Relevant data from the included studies were summarised and analysed. While the additional guidelines and recommendations have provided clarifications in the methodologies used in DRLs establishment, such as data source (i.e. the preference to use data derived from patient instead of phantoms to establish DRLs), protocol (i.e. stratification of DRLs by compressed breast thickness and detector technology, and the use of median value for DRLs quantity instead of mean) and percentiles used to establish DRLs (i.e. set at the 75th percentile with a minimum sample size of 50 patients), other differences such as the lack of a standard dose calculation method used to estimate mean glandular dose continues to complicate comparisons between studies and different DM systems. This systematic review update incorporated the updated guidelines and recommendations from ICRP which will serve as a useful resource for future research efforts related to DRLs, dose monitoring and optimisation.


Assuntos
Níveis de Referência de Diagnóstico , Proteção Radiológica , Humanos , Mamografia , Doses de Radiação , Valores de Referência
5.
Pediatr Radiol ; 51(4): 544-553, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33743038

RESUMO

Thoracic computed tomography (CT) is the imaging reference method in the diagnosis, assessment and management of lung disease. In the setting of cystic fibrosis (CF), CT demonstrates increased sensitivity compared with pulmonary function tests and chest radiography, and findings correlate with clinical outcomes. Better understanding of the aetiology of CF lung disease indicates that even asymptomatic infants with CF can have irreversible pulmonary pathology. Surveillance and early diagnosis of lung disease in CF are important to preserve lung parenchyma and to optimise long-term outcomes. CF is associated with increased cumulative radiation exposure due to the requirement for repeated imaging from a young age. Radiation dose optimisation, important for the safe use of CT in children with CF, is best achieved in a team environment where paediatric radiologists work closely with paediatric respiratory physicians, physicists and radiography technicians to achieve the best patient outcomes. Despite the radiation doses incurred, CT remains a vital imaging tool in children with CF. Radiologists with special interests in CT dose optimisation and respiratory disease are key to the appropriate use of CT in paediatric imaging. Paediatric radiologists strive to minimise radiation dose to children whilst providing the best possible assessment of lung disease.


Assuntos
Fibrose Cística/diagnóstico por imagem , Pulmão/diagnóstico por imagem , Exposição à Radiação/efeitos adversos , Tomografia Computadorizada por Raios X/métodos , Adolescente , Criança , Fibrose Cística/patologia , Diagnóstico por Imagem/métodos , Humanos , Lactente , Doses de Radiação , Radiografia Torácica/métodos
6.
Cancer Causes Control ; 31(8): 749-765, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32410205

RESUMO

PURPOSE: To investigate the association between mammographic density (MD) phenotypes and both clinicopathologic features of breast cancer (BC) and tumor location. METHODS: MD was measured for 297 BC-affected females using qualitative (visual method) and quantitative (fully automated area-based method) approaches. Radiologists' description, visible external markers, and surgical scar were used to establish the location of tumors. Binary logistic regression models were used to assess the association between MD phenotypes and BC clinicopathologic features. RESULTS: Categorical and numerical MD measures showed no association with clinicopathologic features of BC (p > 0.05). Participants with higher BI-RADS scores [(51-75% glandular) and (> 75% glandular)] (p < 0.001), and percent density (PD) categories [PD (21-49%) and PD ≥ 50%] (p = 0.01) were more likely to have tumors emanating from dense areas. Additionally, tumors were commonly found in dense regions of the breast among patients with higher medians of PD (p = 0.001), dense area (DA) (p = 0.02), and lower medians of non-dense area (NDA) (p < 0.001). Adjusted logistic regression models showed that high BI-RADS density (> 75% glandular) has an almost fivefold increased odds of tumors developing within dense areas (OR 4.99, 95% CI 0.93-25.9; p = 0.05. PD (OR 1.02, 95% CI 1-1.03, p = 0.002) and NDA (OR 0.99, 95% CI 0.991-0.997, p < 0.001) had very small effect on tumor location. Compared to tumors within non-dense areas, tumors in dense areas tended to exhibit human epidermal growth factor receptor 2 positive (p = 0.05) and carcinoma in situ (p = 0.01) characteristics. CONCLUSION: MD shows no significant association with clinicopathologic features of BC. However, BC was more likely to originate from dense tissue, with tumors in dense regions having human epidermal growth receptor 2 positive and carcinoma in situ characteristics.


Assuntos
Densidade da Mama , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/patologia , Mamografia , Mama/patologia , Carcinoma in Situ/diagnóstico por imagem , Carcinoma in Situ/patologia , Feminino , Humanos , Modelos Logísticos , Pessoa de Meia-Idade , Fenótipo , Receptor ErbB-2
7.
J Appl Clin Med Phys ; 21(9): 209-214, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32657493

RESUMO

PURPOSE: The purpose of this study was to investigate the effect of increasing iterative reconstruction (IR) algorithm strength at different tube voltages in coronary computed tomography angiography (CCTA) protocols using a three-dimensional (3D)-printed and Catphan® 500 phantoms. METHODS: A 3D-printed cardiac insert and Catphan 500 phantoms were scanned using CCTA protocols at 120 and 100 kVp tube voltages. All CT acquisitions were reconstructed using filtered back projection (FBP) and Adaptive Statistical Iterative Reconstruction (ASIR) algorithm at 40% and 60% strengths. Image quality characteristics such as image noise, signal-noise ratio (SNR), contrast-noise ratio (CNR), high spatial resolution, and low contrast resolution were analyzed. RESULTS: There was no significant difference (P > 0.05) between 120 and 100 kVp measures for image noise for FBP vs ASIR 60% (16.6 ± 3.8 vs 16.7 ± 4.8), SNR of ASIR 40% vs ASIR 60% (27.3 ± 5.4 vs 26.4 ± 4.8), and CNR of FBP vs ASIR 40% (31.3 ± 3.9 vs 30.1 ± 4.3), respectively. Based on the Modulation Transfer Function (MTF) analysis, there was a minimal change of image quality for each tube voltage but increases when higher strengths of ASIR were used. The best measure of low contrast detectability was observed at ASIR 60% at 120 kVp. CONCLUSIONS: Changing the IR strength has yielded different image quality noise characteristics. In this study, the use of 100 kVp and ASIR 60% yielded comparable image quality noise characteristics to the standard CCTA protocols using 120 kVp of ASIR 40%. A combination of 3D-printed and Catphan® 500 phantoms could be used to perform CT dose optimization protocols.


Assuntos
Angiografia por Tomografia Computadorizada , Tomografia Computadorizada por Raios X , Algoritmos , Angiografia Coronária , Humanos , Imagens de Fantasmas , Impressão Tridimensional , Doses de Radiação , Interpretação de Imagem Radiográfica Assistida por Computador , Razão Sinal-Ruído
8.
J Appl Clin Med Phys ; 20(10): 181-186, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31469229

RESUMO

The aim of this study was to determine diagnostic reference levels (DRLs) for cardiac computed tomography (CCT) in Jordan. Volume computed tomography dose index (CTDIvol ) and dose-length product (DLP) were collected from 228 CCTs performed at seven Jordanian hospitals specialized in cardiac CT. DRLs for cardiac CT were defined at the 75th percentile of CTDIvol and DLP. CTDIvol and DLP were collected from 30 successive cardiac CT in each center except for one center (18 scans). The 75th percentile of the CTDIvol and the DLP of the centers calculated from mixed retrospective and prospective gated modes were 47.74 milligray (mGy) and 1035 mGy/cm, respectively. This study demonstrated wide dose variations among the surveyed hospitals for cardiac CT scans; there was a 5.1-fold difference between the highest and lowest median DLP with a range of 223.2-1146.7 mGy/cm. Differences were associated with variations in the mAs and kVp. This study confirmed large variability in CTDIvol and DLP for cardiac CT scans; variation was associated with acquisition protocols and highlights the need for dose optimization. DRLs are proposed for CCT; there remains substantial potential for optimization of cardiac CT examinations for adults in Jordan.


Assuntos
Técnicas de Imagem de Sincronização Cardíaca/normas , Angiografia por Tomografia Computadorizada/normas , Imagens de Fantasmas , Garantia da Qualidade dos Cuidados de Saúde/normas , Radiografia Torácica/normas , Tomografia Computadorizada por Raios X/normas , Adulto , Algoritmos , Feminino , Hospitais , Humanos , Processamento de Imagem Assistida por Computador/métodos , Jordânia , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos , Doses de Radiação , Padrões de Referência , Estudos Retrospectivos
9.
J Radiol Prot ; 39(4): 1060-1073, 2019 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-31469115

RESUMO

This study aimed to investigate the current status of Diagnostic Reference Levels (DRLs) in paediatric CT across Jordan. The dose data for four main CT examinations (brain, chest, abdominopelvic, and chest, abdomen and pelvis (CAP)) in hospitals and imaging centres (n = 4) were measured. The volume CT dose index (CTDIvol) and Dose Length Product (DLP) values were compared within the different hospitals and age groups (<1 year, 1-4 years, 5-10 years and 11-18 years). DRLs in Jordan were compared to international DRLs. The paediatric population consisted of 1818 children; 61.4% of them were male. There were significant variations between the DRLs for each CT scanner with an up to four-fold difference in dose between hospitals. There were apparent significant differences between Jordan and other countries with the DLPs in Jordan being relatively high. However, for CTDIvol, the values in Jordan were close to those of other countries. This study confirmed variations in the CTDIvol and DLP values of paediatric CT scans in Jordan. These variations were attributed to the different protocols and equipment used. There is a need to optimise paediatric CT examinations doses in Jordan.

10.
AJR Am J Roentgenol ; 206(5): 1119-23, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26999655

RESUMO

OBJECTIVE: The objective of the present study was to assess interradiologist agreement regarding mammographic breast density assessment performed using the rating scale outlined in the fifth edition of the BI-RADS atlas of the American College of Radiology. MATERIALS AND METHODS: Breast density assessments of 1000 cases were conducted by five radiologists from the same institution who together had recently undergone retraining in mammographic breast density classification based on the fifth edition of BI-RADS. The readers assigned breast density grades (A-D) on the basis of the BI-RADS classification scheme. Repeat assessment of 100 cases was performed by all readers 1 month after the initial assessment. A weighted kappa was used to calculate intrareader and interreader agreement. RESULTS: Intrareader agreement ranged from a kappa value of 0.86 (95% CI, 0.77-0.93) to 0.89 (95% CI, 0.81-0.95) on a four-category scale (categories A-D) and from 0.89 (95% CI, 0.86-0.92) to 0.94 (95% CI, 0.89-0.97) on a two-category scale (category A-B vs category C-D). Interreader agreement ranged from substantial (κ = 0.76; 95% CI, 0.73-0.78) to almost perfect (κ = 0.87; 95% CI, 0.86-0.89) on a four-category scale, and the overall weighted kappa value was substantial (0.79; 95% CI, 0.78-0.83). Interreader agreement on a two-category scale ranged from a kappa value of 0.85 (95% CI, 0.83-0.86) to 0.91 (95% CI, 0.90-0.92), and the overall weighted kappa was 0.88 (95% CI, 0.87-0.89). CONCLUSION: Overall, with regard to mammographic breast density classification, radiologists had substantial interreader agreement when a four-category scale was used and almost perfect interreader agreement when a dichotomous scale was used.


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Mama/patologia , Glândulas Mamárias Humanas/anormalidades , Mamografia , Adulto , Idoso , Idoso de 80 Anos ou mais , Densidade da Mama , Neoplasias da Mama/classificação , Feminino , Humanos , Pessoa de Meia-Idade , Variações Dependentes do Observador , Medição de Risco
11.
J Digit Imaging ; 29(2): 175-82, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26438424

RESUMO

The aim of this study was to complete a full evaluation of the new EIZO RX850 liquid crystal display and compare it to two currently used medical displays in Australia (EIZO GS510 and Barco MDCG 5121). The American Association of Physicists in Medicine (AAPM) Task Group 18 Quality Control test pattern was used to assess the performance of three high-resolution primary medical displays: EIZO RX850, EIZO GS510, and Barco MDCG 5121. A Konica Minolta spectroradiometer (CS-2000) was used to assess luminance response, non-uniformity, veiling glare, and color uniformity. Qualitative evaluation of noise was also performed. Seven breast lesions were displayed on each monitor and photographed with a calibrated 5.5-MP Olympus E-1 digital SLR camera. ImageJ software was used to sample pixel information from each lesion and surrounding background to calculate their conspicuity index on each of the displays. All monitor fulfilled all AAPM acceptance criteria. The performance characteristics for EIZO RX850, Barco MDCG 5121, and EIZO GS510 respectively were as follows: maximum luminance (490, 500.5, and 413 cd/m(2)), minimum luminance (0.724, 1.170, and 0.92 cd/m(2)), contrast ratio (675:1, 428:1, 449:1), just-noticeable difference index (635, 622, 609), non-uniformity (20, 5.92, and 8.5 %), veiling glare (GR = 2465.6, 720.4, 1249.8), and color uniformity (Δu'v' = +0.003, +0.002, +0.002). All monitors demonstrated low noise levels. The conspicuity index (χ) of the lesions was slightly higher in the EIZO RX850 display. All medical displays fulfilled AAPM performance criteria, and performance characteristics of EIZO RX850 are equal to or better than those of the Barco MDCG 5121 and EIZO GS510 displays.


Assuntos
Gráficos por Computador/normas , Diagnóstico por Imagem/instrumentação , Diagnóstico por Imagem/normas , Humanos , Análise e Desempenho de Tarefas
12.
J Radiol Prot ; 36(2): 290-8, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27250649

RESUMO

The aim of this work was to examine the peak entrance surface air kerma (peak ESAK) to the eyes during CT fluoroscopy lung biopsy, and the impact of lead glasses, exposure parameters, head rotation, and height on peak ESAK to the eyes. Two phantoms simulating the patient and radiologist were used, and 108 exposures were made using a 16-slice Toshiba Alexion CT scanner (Toshiba Medical Systems, Nasu, Japan). ESAK to the phantom radiologist's right eye was measured using an Unfors Xi dosimeter (RaySafe, Billdal, Sweden) with and without lead glasses at two kilovoltages (120 kVp and 135 kVp) and three milliampere settings (10 mA, 20 mA, and 30 mA. A paired t test was used to compare peak ESAK to the eye at different angles, heights, and kVp and mA with and without lead glasses. Peak ESAK was higher without compared to with lead glasses (p ⩽ 0.001). The peak ESAK to the eyes increased as the phantom radiologist rotated toward the gantry without lead glasses, from 2.42 µGy at 120° to 10.54 µGy at 30° (p = 0.001). No significant difference was noted in peak ESAK with change in phantom radiologist height (p > 0.05). An increase from 120 kVp to 135 kVp resulted in 23% and 26% increases in peak ESAK with and without lead glasses respectively (p = 0.001). An increase of tube current from 10 mA to 20 mA almost doubled peak ESAK (p = 0.005). Findings demonstrate that lead glasses reduce ESAK to the eyes, and that increased kVp, mA, and eye rotation to the gantry increase ESAK to the eyes.


Assuntos
Olho/efeitos da radiação , Biópsia Guiada por Imagem , Pneumopatias/diagnóstico por imagem , Exposição Ocupacional/efeitos adversos , Exposição Ocupacional/prevenção & controle , Tomografia Computadorizada por Raios X , Dispositivos de Proteção dos Olhos , Fluoroscopia , Humanos , Imagens de Fantasmas
13.
Radiology ; 277(3): 751-62, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26110669

RESUMO

PURPOSE: To investigate the hypothesis that the clinically observed decrease in apparent diffusion coefficient (ADC) at diffusion-weighted magnetic resonance imaging with increasing prostate cancer Gleason grade can be attributed to an increasing volume of low-diffusivity epithelial cells and corresponding decreasing volumes of higher-diffusivity stroma and lumen space rather than to increased cell density. MATERIALS AND METHODS: Tissue samples were acquired after institutional ethics review committee approval and informed consent from patients were obtained. Nuclear count, nuclear area, and gland component volumes (epithelium, stroma, lumen space) were measured in tissue from 14 patients. Gland component volumes and cellularity metrics were correlated with Gleason pattern (Spearman rank correlation coefficient) and measured ADC (Pearson correlation coefficient) in six prostates ex vivo. Differences between metrics for cancerous tissue and those for normal tissue were assessed by using a two-tailed two-sample t test. Linear mixed models with a post hoc Fisher least significant difference test were used to assess differences between gland component volumes and cellularity metrics for multiple groups. To adjust for a clustering effect due to repeated measures, the organ mean value of the measured metric for each tissue type was used in the analysis. RESULTS: There were significant differences between Gleason patterns for gland component volumes (P < .05) but not nuclear count (P = .100) or area (P = .141). There was a stronger correlation of Gleason pattern with gland component volumes (n = 553) of epithelium (Spearman ρ = 0.898, P < .001), stroma (ρ = -0.651, P < .001), and lumen space (ρ = -0.912, P = .007) than with the cellularity metrics (n = 288) nuclear area (ρ = 0.422, P = .133) or nuclear count (ρ = 0.082, P = .780). There was a stronger correlation between measured ADC and lumen volume (r = 0.688, P < .001) and epithelium volume (r = -0.647, P < .001) than between ADC and nuclear count (r = -0.598, P < .001) or nuclear area (r = -0.569, P < .001) (n = 57). CONCLUSION: Differences in the gland compartment volumes of prostate tissue having distinct diffusivities, rather than changes in the conventionally cited "cellularity" metrics, are likely to be the major contributor to clinically observed variations of ADC in prostate tissue.


Assuntos
Imagem de Difusão por Ressonância Magnética , Próstata/patologia , Epitélio/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Neoplasias da Próstata/patologia
14.
Pediatr Radiol ; 45(12): 1814-22, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26242810

RESUMO

BACKGROUND: The volume of CT examinations has increased with resultant increases in collective dose values over the last decade. OBJECTIVE: To analyze the impact of the tube current and voltage modulation for dose values and image quality of pediatric head CT examinations. MATERIALS AND METHODS: Head CT examinations were performed on anthropomorphic phantoms and four pediatric age categories before and after the introduction of dedicated pediatric curves for tube voltage and current modulation. Local diagnostic reference levels were calculated. Visual grading characteristic image quality evaluation was performed by four pediatric neuroradiologists and image noise comparisons were performed. RESULTS: Pediatric-specific modulation curves demonstrated a 49% decrease in mean radiation dose for phantom examinations. The local diagnostic reference levels (CTDIvol) for clinical examinations decreased by 52%, 41%, 46% and 40% for newborn, 5-, 10- and 15-year-old patients, respectively. Visual grading characteristic image quality was maintained for the majority of age categorizations (area under the curve = 0.5) and image noise measurements did not change (P = 0.693). CONCLUSION: Pediatric-specific dose modulation curves resulted in an overall mean dose reduction of 45% with no significant differences in subjective or objective image quality findings.


Assuntos
Cabeça/diagnóstico por imagem , Imagens de Fantasmas , Doses de Radiação , Interpretação de Imagem Radiográfica Assistida por Computador/métodos , Tomografia Computadorizada por Raios X/métodos , Adolescente , Criança , Pré-Escolar , Humanos , Lactente , Recém-Nascido
15.
J Med Imaging Radiat Sci ; 55(4): 101738, 2024 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-39180904

RESUMO

INTRODUCTION: The utilisation of immobilisation or restraint during paediatric radiography is a multifactorial issue with associated legal and ethical considerations. Current practice regularly presents challenges for radiographers, with a notable absence of any professional best-practice guidance. This study investigated radiographers' perspectives in Ireland on the use of immobilisation or restraint methods and the factors influencing these choices and aimed to fill the 20-year gap in European radiographers' perspectives gaining an up-to-date understanding and contribute to the global conversation in this regard. METHODS: An anonymous online survey design was constructed using the Google Forms platform and distributed to hospital radiology departments across the Southern region of Ireland. Additionally, a short survey was send to the head of the nine radiology departments to audit the existing availability of immobilisation and/or restraint devices for paediatric radiography. Descriptive statistics (frequencies and percentages) were undertaken. Bar charts were utilised where appropriate to display trends. RESULTS: One hundered and three responses were received. The majority of radiographers reported using immobilisation (95 %) or restraint (89 %) techniques during paediatric radiography, although 70 % acknowledged the lack of training regarding restraint techniques. However, 93 % reported trying alternative techniques such as distraction and negotiation to avoid immobilisation or restraint. A desire for further guidance and training was reported, with 80 % of respondents noting training as essential or potentially beneficial. CONCLUSIONS: Ambiguity remains surrounding the distinction between the terms "restraint" and "immobilisation" in paediatric radiography. Radiographers' use of restraint and immobilisation during paediatric radiography is influenced by the child's age, distress level, radiation protection and safety, and the ability of the child to understand instructions. Appropriate up-to-date guidelines and training would be recommended to clarify terminology and promote the safe practice of restraint and immobilisation during paediatric radiography.

16.
J Med Imaging Radiat Sci ; 55(4): 101726, 2024 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-39106559

RESUMO

INTRODUCTION: Research studies tracking gender and academic publication productivity in healthcare find gender disparities in research activity, publication, and authorship. Article authorship is one of the important metrics to track when seeking to understand gender inequality in academic career advancement. Research on gender disparities in publication productivity in the field of Medical Radiation Science (MRS) is very limited thus this study analyses and explains potential gender differences in article authorship and acceptance for publication in the Journal of Medical Imaging and Radiation Sciences (JMIRS) for a 5-year period (2017-2021). METHODS: Gender was inferred based on the author's first name or title (e.g., Mr, Mrs or Ms). For those who left the title blank or reported as 'Dr' or 'Prof,' a series of steps were taken to identify their gender. Where gender was impossible to ascribe, these authors were excluded. Descriptive and inferential statistics are reported for the study population. Descriptive and inferential statistics are used. Percentages of females are reported, and males constitute the other portion. Chi-square, slope analysis and z-tests were used to test hypotheses. RESULTS: Results show that female authorship overall and in all categories of authorship placement (i.e., first, last and corresponding) increased over the timeframe reviewed. The percentage gain in the increase was higher than that for male authorship. However, male authorship started from a higher baseline in 2017 and has also increased year on year and overall, as well as in each placement category examined. More female authors were in the MRS sub-specialism Radiation Therapy (RT) than in the other MRS sub-specialisms. Analysis of the acceptance rate of articles with female authors shows a weak downward trend, and this may be related to higher submission and acceptance rates of articles by male authors during the same period. CONCLUSION: Male authors are overrepresented in all categories, which raises questions about the persistence of gender disparities in JMIRS authorship and article acceptance. Positive trends in female authorship indicate progress, yet there is the persistence of the significant under-representation of women in the Medical Radiation Sciences workforce in academic publishing. Recruiting more males to address the gender imbalance in the profession should not be at the expense of females' career progression.

17.
J Med Imaging Radiat Sci ; 55(2): 189-196, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38350753

RESUMO

BACKGROUND: Patients with dementia frequently present to the Radiology Department. However, stigmas have been recorded amongst radiographers surrounding imaging persons with dementia (PwD). This study aimed to investigate the impact of PwD attending the Radiology Department for imaging and the resultant effects to all patients, radiographers, and the Department from the perspectives of the examining radiographer. METHODS: A paper-based questionnaire of radiographers' perceptions and experiences of individual examinations 'termed an interaction form' was created and made available in a public hospital in Ireland for a period of eight weeks. Radiographers completed the interaction form collecting data regarding individual imaging examinations of PwD. The form comprised sixteen closed and one open-ended question on the radiographers' individual perspectives of PwDs' abilities and distress levels, carers and comforters and their role in the examination, what the radiographer found helpful in the interaction, and any adverse events. Data were analysed using a combination of descriptive analysis and thematic content analysis. RESULTS: Thirty-three interaction forms were completed by the participating radiographers. The modality most commonly represented in the survey was general X-ray (58%). Radiographers reported 84% of examinations for PwD required extra time, with 27% of examinations required repeat imaging and 69% of patients appeared distressed. A carer helped facilitate the completion of 77% of examinations. Qualitative data indicated that distractive and communicative techniques were used by radiographers to make the patient feel more comfortable and help with examination success. CONCLUSION: PwD often require more time for radiological examinations, they often need repeat imaging and re-scheduling of an examination at a more appropriate time. These factors need to be considered when scheduling and performing radiological examinations. Patient distress was frequently encountered, this area may benefit from further research and dedicated practitioner training which could help drive improvements in patient experience.


Assuntos
Atitude do Pessoal de Saúde , Demência , Serviço Hospitalar de Radiologia , Humanos , Demência/psicologia , Inquéritos e Questionários , Masculino , Feminino , Irlanda
18.
J Med Imaging Radiat Sci ; 55(4): 101442, 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38908133

RESUMO

INTRODUCTION: Many of the tasks performed by radiographers rely on effective communication with patients. This study aims to evaluate radiographers' experiences communicating with patients to determine what communication skills they believe they have, challenges they encounter and any familiarity with communication tools. It also assesses their willingness to accept further training and utilise recognised scripted communication tools, such as AIDET (Acknowledge, Introduce, Duration, Explanation and Thank you). METHODS: Data were collected using an online survey deployed using the MS Forms platform. The survey consisted of 42 questions: 12 qualitative 'open-ended' questions and 30 'close-ended' quantitative questions. The survey remained open between March and May 2022. Quantitative data were analysed using descriptive statistics and qualitative responses using thematic content analysis. Cross distribution analysis, basic percentages, and graphic bar charts were used for quantitative data analysis. RESULTS: One hundred and nine radiographers completed the questionnaire. Quantitative analysis found that 84 % (n = 87) of radiographers had not received additional post-qualification training in patient communication. Five communication themes emerged from the thematic analysis; (1) Expectations, (2) Education, (3) Improvements, (4) Errors, and (5) Communication Tools. The scripted communication tool AIDET, according to 86 % (n = 89) of respondents, was perceived to be potential helpful in improving radiographer-patient interactions. CONCLUSION: Radiographers do not believe they have received adequate training for communicating with patients and would like to receive additional training and education. AIDET could be a useful communication tool as a starting guide for less experienced radiographers. There is a need for further studies that explore the use and effectiveness of scripted communication tools in radiographers' communications skills. In addition, additional post-registration training opportunities need to be available for radiographers in patient communication.

19.
Radiother Oncol ; 196: 110286, 2024 07.
Artigo em Inglês | MEDLINE | ID: mdl-38641259

RESUMO

BACKGROUND AND PURPOSES: To assess osteoradionecrosis (ORN) incidence in a population of Irish Head and Neck cancer (HNC) patients, and assess precipitating factors that may contribute to ORN development to aid prevention. MATERIALS AND METHODS: Review of 1050 HNC patients attending the Dental Oncology Clinic, CUDSH between 2010 and 2021 identified 47 cases of ORN. Medical, dental and radiotherapy records of these forty-seven patients were retrospectively reviewed. Patient-, tumour-, and treatment-related variables were investigated in association with osteoradionecrosis development. Analysis conducted using SPSS, Pearson's Chi-square test (p < 0.05), and ordinal regression model. RESULTS: ORN incidence was 4.4 %. Median time from radiotherapy (RT) to ORN development was 9.5 months (range 1-98.5 months). ORN development within the mandibular surgical site was significant (p <.001), presenting at a higher Notani grade (p =.002), in mid-mandibular body region (p =.028), at radiation doses ≥ 60 Gy (p =.035), due to induced causes (p =.029), and without resolution (p =.019). CONCLUSION: This is the first retrospective study of ORN in HNC patients in Ireland over 10-year period. ORN incidence was extremely low (4.4%). As patients reported high smoking/alcohol use and poor dental attendance pre-diagnosis, this suggests intensive dental intervention pre/post-diagnosis contributed to low ORN rates. Mandibular surgery pre-RT increased risk of developing ORN at the surgical site. Therefore, we recommend future treatment planning should contour the surgical site, designating it an organ at risk (OAR), assigning a dose constraint, where oncologically possible, with emphasis on reducing the hot-spot to this region; findings reinforce importance of life-long expert dental care to reduce ORN incidence.


Assuntos
Neoplasias de Cabeça e Pescoço , Osteorradionecrose , Radioterapia , Fatores de Risco , Osteorradionecrose/epidemiologia , Osteorradionecrose/etiologia , Osteorradionecrose/prevenção & controle , Neoplasias de Cabeça e Pescoço/complicações , Neoplasias de Cabeça e Pescoço/radioterapia , Incidência , Estudos Retrospectivos , Irlanda/epidemiologia , Higiene Bucal/normas , Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Radioterapia/efeitos adversos , Mandíbula/cirurgia
20.
J Med Imaging Radiat Sci ; 55(3): 101393, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38719647

RESUMO

AIM: This study aims to identify the prospective skill requirements for future radiographers practising in the United Arab Emirates (UAE). Such information will inform educational institutions, healthcare organisations, and policymakers in developing effective strategies. METHODS: A cross-sectional study was conducted involving currently practising radiographers, nuclear medicine technologists, sonographers, and radiation therapists in the UAE (n =74). A comprehensive survey questionnaire was developed and validated through piloting and expert consultations. Ethical approval was obtained, and data were collected through purposive sampling. Descriptive statistics, reliability analysis, Chi-square tests, and factor analysis were employed in the data analysis. RESULTS: The results showed that 73%, 47.3%, 43.2%, 40.5%, 39.2%, 33.8% interested in radiology safety, image interpretation, interprofessional and interpersonal skills, research and managerial skills, Picture Archiving and Communication System (PACS) administration and AI (Artificial Intelligence) and, clinical supervision and assessment, respectively. The factor analysis showed four factors factor considered for CPD training are training settings (15.12), training topics (1.88), CPD credits (1.72) and, presenter and expenses (1.49). CONCLUSION: This study sheds light on the CPD requirements and aspirations of radiographers in the UAE, offering insights into their preferences and challenges. These findings can inform strategies for improving CPD opportunities and ensuring that radiographers are equipped to meet the evolving healthcare demands in the UAE, including performing enhanced practice. IMPLICATIONS FOR PRACTICE: Development of flexible and comprehensive CPD programmes tailored to radiographers' career interests is required. Employers should provide financial support and flexibility in training options. Regulatory bodies should continue to mandate CPD, fostering a culture of lifelong learning. Supportive work environments, interdisciplinary collaboration, and technological fluency are crucial. Emphasising patient-centred care, research opportunities, and continuous assessment further enhances radiography practice.


Assuntos
Competência Clínica , Emirados Árabes Unidos , Humanos , Estudos Transversais , Inquéritos e Questionários , Feminino , Masculino , Adulto , Radiografia , Radiologia/educação , Pessoal Técnico de Saúde/educação , Pessoa de Meia-Idade
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