Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 16 de 16
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
Radiographics ; 43(11): e230103, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37883299

RESUMO

Social media is a popular communication and marketing tool in modern society, with the power to reach and engage large audiences. Many members of the medical and radiology communities have embraced social media platforms, particularly X (formerly known as Twitter), as an efficient and economic means for performing patient outreach, disseminating research and educational materials, building networks, and promoting diversity. Editors of medical journals with a clear vision and relevant expertise can leverage social media and other digital tools to advance the journal's mission, further their interests, and directly benefit journal authors and readers. For editors, social media offers a means to increase article visibility and downloads, expand awareness of volunteer opportunities, and use metrics and other feedback to inform future initiatives. Authors benefit from broader dissemination of their work, which aids establishment of a national or international reputation. Readers can receive high-quality high-yield content in a digestible format directly on their devices while actively engaging with journal editors and authors in the online community. The authors highlight the multifaceted benefits of social media engagement and digital tool implementation in the context of medical journalism and summarize the activities of the RadioGraphics Social Media and Digital Innovation Team. By enumerating the social media activities of RadioGraphics and describing the underlying rationale for each activity, the authors present a blueprint for other medical journals considering similar initiatives. ©RSNA, 2023.


Assuntos
Radiologia , Mídias Sociais , Humanos , Comunicação
2.
Brain ; 144(5): 1482-1487, 2021 06 22.
Artigo em Inglês | MEDLINE | ID: mdl-33842948

RESUMO

Hemifacial spasm is typically caused by vascular compression of the proximal intracranial facial nerve. Although the prevalence of neurovascular compression has been investigated in a cohort of patients with classical trigeminal neuralgia, the prevalence and severity of neurovascular compression has not been well characterized in patients with hemifacial spasm. We aimed to investigate whether presence and severity of neurovascular compression are correlated to the symptomatic side in patients with hemifacial spasm. All patients in our study were evaluated by a physician who specializes in the management of cranial nerve disorders. Once hemifacial spasm was diagnosed on physical exam, the patient underwent a dedicated cranial nerve protocol magnetic resonance imaging study on a 3 T scanner. Exams were retrospectively reviewed by a neuroradiologist blinded to the symptomatic side. The presence, severity, vessel type, and location of neurovascular compression along the facial nerve was recorded. Neurovascular compression was graded as contact alone (vessel touching the facial nerve) versus deformity (indentation or deviation of the nerve by the culprit vessel). A total of 330 patients with hemifacial spasm were included. The majority (232) were female while the minority (98) were male. The average age was 55.7 years. Neurovascular compression (arterial) was identified on both the symptomatic (97.88%) and asymptomatic sides (38.79%) frequently. Neurovascular compression from an artery along the susceptible/proximal portion of the nerve was much more common on the symptomatic side (96.36%) than on the asymptomatic side (12.73%), odds ratio = 93.00, P < 0.0001. When we assessed severity of arterial compression, the more severe form of neurovascular compression, deformity, was noted on the symptomatic side (70.3%) much more frequently than on the asymptomatic side (1.82%) (odds ratio = 114.00 P < 0.0001). We conclude that neurovascular compression that results in deformity of the susceptible portion of the facial nerve is highly associated with the symptomatic side in hemifacial spasm.


Assuntos
Artérias/patologia , Nervo Facial/patologia , Espasmo Hemifacial/patologia , Síndromes de Compressão Nervosa/complicações , Síndromes de Compressão Nervosa/patologia , Adulto , Idoso , Feminino , Espasmo Hemifacial/etiologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Síndromes de Compressão Nervosa/epidemiologia , Prevalência , Estudos Retrospectivos
3.
Microsurgery ; 42(3): 209-216, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34935198

RESUMO

OBJECTIVE: Sarcopenia is increasingly being recognized as a negative prognostic factor in patients with head and neck cancer (HNC). We associate a sarcopenia biomarker measured radiographically from computed tomography (CT) of the neck to postoperative adverse events in patients with operable HNC. PATIENTS AND METHODS: A prospective cohort of treatment-naïve HNC patients undergoing surgery with microvascular reconstruction was performed. Cervical paraspinal skeletal muscle index (CPSMI) was calculated using preoperative CT neck imaging and adjusted for height and sex. Postoperative adverse events, including Clavien-Dindo Grade 3+ complications and fistula, were recorded within 30-days of the index surgery. Multivariate logistic regression was used to evaluate the association between CPSMI and postoperative complications. The modified frailty index (mFI) and Risk Assessment Index (RAI) were compared with CPSMI outcomes. RESULTS: A total of 127 patients with mucosal HNC were included in the study. The mean age was 60.5 years, and 87 (68.5%) patients were male. Sixty Clavien-Dindo grade 3+ events occurred; 17 patients developed an oro/pharyngocutaneous fistula. Low CPSMI was independently associated with Clavien-Dindo Grade 3+ events (OR 2.80, 95% CI of 1.18-6.99) and fistula (OR of 6.10, 95% CI of 1.53-24.3) when adjusted for multiple factors. CPSMI outperformed the mFI and RAI frailty indices to predict postoperative adverse events (p < .05). CONCLUSION: Low CPSMI is independently associated with postoperative adverse events and outperforms current frailty indices inoperable HNC with microvascular reconstruction.


Assuntos
Fragilidade , Neoplasias de Cabeça e Pescoço , Fragilidade/complicações , Fragilidade/diagnóstico , Neoplasias de Cabeça e Pescoço/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Músculo Esquelético/diagnóstico por imagem , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Período Pós-Operatório , Estudos Prospectivos , Estudos Retrospectivos
6.
Del Med J ; 87(1): 17-9, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25799608

RESUMO

A patent ductus arteriosus is a very common problem in the neonatal intensive care unit. This condition is far more common among premature infants and is most likely related to physiological factors related to prematurity rather than an inherent abnormality in the ductus. At our institution, infants which are 32 weeks gestation or before undergo routine screening examinations with transcranial ultrasound to evaluate for intraventricular hemorrhage and other conditions which are related to prematurity. In this case report, during one of these routine screenings, the ultrasound demonstrated prominent pulsatility of the cerebral vascularity with a high pulsatility index and high resistive index on spectral Doppler, suggesting the presence of a patent ductus arteriosus. Subsequent echocardiography confirmed the diagnosis.


Assuntos
Permeabilidade do Canal Arterial/diagnóstico por imagem , Achados Incidentais , Ultrassonografia Doppler Transcraniana/métodos , Estudos de Casos e Controles , Diagnóstico Diferencial , Feminino , Humanos , Recém-Nascido , Recém-Nascido Prematuro
7.
Abdom Imaging ; 39(3): 467-71, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24402474

RESUMO

PURPOSE: The aim of this retrospective study was to investigate the efficacy of morphine-augmented hepatobiliary imaging (MAHBI) for diagnosing acute cholecystitis (AC). METHODS: Sixty-eight patients (Male:Female = 36:32, age = 54 ± 17 years) referred for diagnosis of AC by 30-min post-morphine MAHBI after the standard 1-h imaging were recruited. Non-visualization of gallbladder on 30-min post-morphine images by visual analysis was considered positive. Final diagnosis of pathological examination for all patients was used as the gold standard. RESULTS: There was significant correlation of AC and MAHBI (p < 0.05). There were 45 true positive (TP), 19 false positive (FP), 4 true negative (TN), and no false negative (FN) cases using gallbladder visualization by 30-min post-morphine as the criteria, with a high false positive rate of 83%. The sensitivity, specificity, accuracy, positive and negative predictive values of MAHBI in detecting AC were 100%, 17%, 72%, 70%, and 100%, respectively. CONCLUSIONS: MAHBI is sensitive but may not specific for diagnosing AC due to the potential pitfall of high false positive rate. Correlation with other clinical findings is recommended for optimal patient management.


Assuntos
Analgésicos Opioides/administração & dosagem , Sistema Biliar/diagnóstico por imagem , Colecistite Aguda/diagnóstico por imagem , Vesícula Biliar/diagnóstico por imagem , Aumento da Imagem/métodos , Fígado/diagnóstico por imagem , Morfina/administração & dosagem , Diagnóstico Diferencial , Reações Falso-Positivas , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Cintilografia , Compostos Radiofarmacêuticos , Reprodutibilidade dos Testes , Estudos Retrospectivos , Sensibilidade e Especificidade , Tecnécio
8.
J Nucl Med Technol ; 52(2): 86-90, 2024 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-38839121

RESUMO

Our rationale was to review the imaging options for patients with primary hyperparathyroidism and to advocate for judicious use of 4-dimensional (4D) SPECT/CT to visualize diseased parathyroid glands in patients with complex medical profiles or in whom other imaging modalities fail. We review the advantages and disadvantages of traditional imaging modalities used in preoperative assessment of patients with primary hyperparathyroidism: ultrasound, SPECT, and 4D CT. We describe a scheme for optimizing and individualizing preoperative imaging of patients with hyperfunctioning parathyroid glands using traditional modalities in tandem with 4D SPECT/CT. Using the input from radiologists, endocrinologists, and surgeons, we apply patient criteria such as large body habitus, concomitant multiglandular disease, multinodular thyroid disease, confusing previous imaging, and unsuccessful previous surgery to create an imaging paradigm that uses 4D SPECT/CT yet is cost-effective, accurate, and limits extraneous radiation exposure. 4D SPECT/CT capitalizes on the strengths of SPECT and 4D CT and addresses limitations that exist when these modalities are used in isolation. In select patients with complicated clinical parameters, preoperative imaging with 4D SPECT/CT can improve accuracy yet remain cost-effective.


Assuntos
Tomografia Computadorizada Quadridimensional , Hiperparatireoidismo Primário , Tomografia Computadorizada com Tomografia Computadorizada de Emissão de Fóton Único , Humanos , Hiperparatireoidismo Primário/diagnóstico por imagem , Hiperparatireoidismo Primário/cirurgia , Tomografia Computadorizada com Tomografia Computadorizada de Emissão de Fóton Único/métodos , Tomografia Computadorizada Quadridimensional/métodos
9.
AJNR Am J Neuroradiol ; 44(12): 1421-1424, 2023 12 11.
Artigo em Inglês | MEDLINE | ID: mdl-38050008

RESUMO

BACKGROUND AND PURPOSE: Diagnostic CT of the larynx is historically performed with a protocol that combines a standard neck CT with dedicated imaging through the larynx. Multichannel CT scanners, however, allow high-resolution reformatted images of the larynx to be created directly from the initial neck acquisition data. The purpose of this study was to determine whether reformatted laryngeal images derived from a standard neck CT acquisition provide information comparable with that of separate dedicated high-resolution laryngeal images. MATERIALS AND METHODS: The CT protocol for suspected laryngeal masses at our institution consists of a standard neck acquisition followed by a second acquisition focused on the larynx. We enrolled 200 patients who had undergone this protocol for a suspected laryngeal mass. Two head and neck radiologists independently reviewed each of the 200 scans twice. In one session, the entire scan was available, while in the other session, only images derived from the standard neck acquisition were available. The main outcome variable was the frequency of discrepant tumor staging between the interpretation sessions. No pathologic reference standard was used. RESULTS: Radiologist A had discrepant staging in 45 of the 200 scans (23%; 95% CI, 17%-29%). Radiologist B had discrepant staging in 42 of the 200 scans (21%; 95% CI, 16%-27%). Fifty-three of the 87 discrepancies (61%) reflected improper downstaging of the laryngeal tumor on standard images alone, while the other 34 (39%) had improper upstaging on standard images alone. CONCLUSIONS: Reformatted images from our institution's standard neck CT acquisition were less accurate than dedicated images of the larynx for analysis of laryngeal tumor extension. Focused images of the larynx were needed to optimize interpretation.


Assuntos
Neoplasias Laríngeas , Laringe , Humanos , Neoplasias Laríngeas/diagnóstico por imagem , Neoplasias Laríngeas/patologia , Laringe/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Pescoço , Estadiamento de Neoplasias
10.
Head Neck ; 44(4): 844-850, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35020252

RESUMO

BACKGROUND: We ascertain the role of a low cervical paraspinal skeletal muscle index (CPSMI) as a biomarker for poor treatment tolerance in patients with operable mucosal head and neck squamous cell carcinoma (HNSCC). METHODS: A prospective cohort of patients with operable HNSCC requiring microvascular reconstruction was evaluated. Low CPSMI was calculated using preoperative CT neck imaging. Poor treatment tolerance, a composite measure of incomplete therapy or severe morbidity/mortality during treatment, was the primary outcome. RESULTS: One hundred and twenty-seven patients underwent extirpative surgery with a mean age was 60.5. Poor treatment tolerance occurred in 71 (56%) patients with 21 not completing recommended adjuvant therapy and 66 having severe treatment-related morbidity. A low CPSMI was independently associated with poor treatment tolerance (OR 2.49, 95%CI 1.10-5.93) and delay to adjuvant therapy (OR 4.48, 95%CI 1.07-27.6) after adjusting for multiple confounders. CONCLUSION: Low CPSMI was independently associated with poor treatment tolerance in patients with operable HNSCC.


Assuntos
Neoplasias de Cabeça e Pescoço , Sarcopenia , Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/cirurgia , Humanos , Pessoa de Meia-Idade , Músculo Esquelético/diagnóstico por imagem , Estudos Prospectivos , Estudos Retrospectivos , Sarcopenia/complicações , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologia
11.
Laryngoscope Investig Otolaryngol ; 7(3): 757-765, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35734044

RESUMO

Objectives: Data on the efficacy of including definitive local therapy to the primary site for head and neck squamous cell carcinoma (HNSCC) patients with synchronous distant metastasis are lacking. In multiple different solid tumor types, there has been benefit when using systemic therapy followed by local consolidative therapy (stereotactic ablative radiotherapy or surgery) directed at metastases. We proposed to retrospectively evaluate patients at our institution that received definitive treatment to the primary. Methods: Single institution retrospective study evaluating 40 patients with metastatic HNSCC treated with definitive surgery (55%) or chemoradiation (45%) to the primary site from 2000 to 2020. The major endpoints were overall survival (OS) and progression-free survival (PFS) for the total population and multiple sub-groups. Some variables were evaluated with multiple covariates Cox model. Results: The median PFS was 8.6 months (95% CI, 6.4-11.6), and OS was 14.2 months (95% CI, 10.9-27.5). In 28% of patients that received induction therapy, there was a twofold increase in median overall survival to 27.5 months. In the 33% of patients that received anti-PD-1 mAb as part of their treatment course, the median OS was significantly increased to 41.7 months (95% CI, 8.7-NR) versus 12.1 months (95% CI, 8.4-14.4) with a 5-year OS of 39%. Multivariate analysis for OS showed significance for age at diagnosis, use of IO, and number of metastatic sites. Conclusion: We observed impressive survival outcomes in metastatic HNSCC patients treated with definitive local therapy to the primary site in addition to induction and/or immunotherapy. Further study is warranted.Level of Evidence: 3.

12.
Laryngoscope ; 131(4): 800-805, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33270244

RESUMO

OBJECTIVES/HYPOTHESIS: Prevertebral fascia invasion is a feature of advanced hypopharyngeal squamous cell carcinoma (HPSCC) that predicts surgical futility. Magnetic resonance and computed topography imaging are used to identify prevertebral involvement, but reliable prediction remains a challenge. Our aims were to describe a new indication for esophagrams and assess its ability to detect prevertebral invasion preoperatively. STUDY DESIGN: Retrospective Review. METHODS: A retrospective review of advanced HPSCC patients from 2001 to 2019. Thirty-one patients underwent curative treatment (21 surgically, 10 with chemoradiation) with a preoperative esophagram. Operative and pathology reports, and fluoroscopic images were collected from the medical record. Esophagrams were read independently by two blinded radiologists. Excursion of the laryngeal complex was quantified relative to the height of vertebral bodies; <0.5 bodies was considered positive for fixation. Surgery or comparative imaging modalities were the gold-standard comparisons. RESULTS: Mean age at diagnosis was 63 years. Twenty-one patients underwent surgical treatment with laryngopharyngectomies. One patient had prevertebral invasion during surgical exploration. Ten patients underwent chemoradiation therapy, and three of these had prevertebral invasion. The average hyolaryngeal elevation was 1.05 vertebral bodies (standard deviation = 0.5). There was a strong correlation between radiologists (R = 0.80, P < .0001). Compared to the gold standard, esophagrams had sensitivity of 75%, specificity of 93%, positive predictive value of 60%, and a negative predictive value (NPV) of 96%. CONCLUSIONS: This study highlights the utility of a common radiologic modality in assessing prevertebral fascia invasion in an advanced-stage HPSCC cohort undergoing surgical treatment. With a high NPV and specificity, the esophagram's potential to rule out prevertebral fascia invasion is a useful predictor of resectability. LEVEL OF EVIDENCE: 4 Laryngoscope, 131:800-805, 2021.


Assuntos
Carcinoma de Células Escamosas/diagnóstico por imagem , Carcinoma de Células Escamosas/patologia , Fáscia/diagnóstico por imagem , Fáscia/patologia , Neoplasias Hipofaríngeas/diagnóstico por imagem , Neoplasias Hipofaríngeas/patologia , Carcinoma de Células Escamosas/terapia , Feminino , Humanos , Neoplasias Hipofaríngeas/terapia , Laringectomia , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Estadiamento de Neoplasias , Sistema de Registros , Estudos Retrospectivos , Terapia de Salvação
13.
Brain Commun ; 3(3): fcab146, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34396106

RESUMO

Identify preoperative imaging findings in hemifacial spasm patients that predict the post-surgical success following microvascular decompression. This is a retrospective study of patients who were diagnosed with hemifacial spasm, had a dedicated cranial nerve MRI, and underwent microvascular decompression for hemifacial spasm. Bilateral facial nerves were interrogated for neurovascular compression. If neurovascular compression was identified, we recorded whether the offending vessel was an artery, a vein or both. The location of the neurovascular compression (proximal nerve versus distal nerve) was noted. The severity of the neurovascular compression was categorized as contact versus deformity of the nerve. Patients were contacted to determine their post-operative spasm status. The relationships between imaging findings and post-surgical outcome were assessed by Chi-square tests, and odds ratios were calculated to quantify the degree of association. The study included 212 patients. Upon follow up, 192 patients were spasm free (90.57%). Imaging findings on the symptomatic side were as follows: arterial neurovascular compression was seen in 207 patients (97.64%), venous only neurovascular compression in two patients (0.94%), and no neurovascular compression in three patients (1.42%). Arterial neurovascular compression along the proximal, susceptible segment of the nerve was observed in 202 patients (95.28%); deformity was observed more commonly than contact alone. Arterial neurovascular compression along the distal segment only of the nerve was observed in five patients (2.36%). In patients with arterial neurovascular compression of the proximal and distal portions of the nerve, 93.07% and 60.0% of patients were spasm-free respectively. If venous neurovascular compression only was observed on imaging, 0% of patients were spasm-free. Patients with arterial neurovascular compression of the susceptible segment are much more likely to be spasm free than patients without this imaging finding, [odds ratio 20.14 (CI 5.08, 79.81), P-value <0.0001]. When comparing the two groups of arterial neurovascular compression (deformity versus contact), no statistically significant difference in outcomes was observed. In patients with hemifacial spasm undergoing microvascular decompression, imaging findings do predict surgical outcome. Patients with arterial neurovascular compression of the proximal, susceptible portion of the nerve are much more likely to be spasm free after surgery than those without this imaging finding. The imaging findings inform the risk benefit analysis and discussion with patients before they undergo microvascular decompression for hemifacial spasm.

14.
Head Neck ; 42(6): 1310-1316, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32329958

RESUMO

Multidisciplinary conferences (MDC) are an important component of head and neck oncologic care including diagnosis, treatment, and survivorship. Virtual MDC allows for improved collaboration between providers at distant sites and proper allocation of health care resources in a time of crisis. When approached systematically, a virtual MDC is feasible to design and implement in a large academic medical center with multiple satellite hospitals.


Assuntos
Betacoronavirus , Infecções por Coronavirus/prevenção & controle , Infecções por Coronavirus/transmissão , Oncologia/organização & administração , Pandemias/prevenção & controle , Equipe de Assistência ao Paciente/organização & administração , Pneumonia Viral/prevenção & controle , Pneumonia Viral/transmissão , Telemedicina/organização & administração , Centros Médicos Acadêmicos , COVID-19 , Infecções por Coronavirus/epidemiologia , Humanos , Pennsylvania , Pneumonia Viral/epidemiologia , SARS-CoV-2
15.
Semin Ultrasound CT MR ; 40(5): 400-413, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31635767

RESUMO

The incidence of head and neck cancer continues to rise annually, most commonly squamous cell carcinoma (SCCa). Advances in imaging techniques have improved diagnostic accuracy with important ramifications for initial staging and post-treatment surveillance. FDG-PET/CT and, more recently, FDG-PET/MRI have revolutionized the staging and surveillance of head and neck SCCa. We detail the diagnostic role of FDG-PET/CT and FDG-PET/MRI of SCCa at the different head and neck subsites, highlighting their role in identifying the primary tumor extent, regional nodal metastases, and distant metastatic disease in the pretreatment and post-treatment setting, as well as implications for staging, treatment, and prognosis.


Assuntos
Carcinoma de Células Escamosas/diagnóstico por imagem , Carcinoma de Células Escamosas/terapia , Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/terapia , Imageamento por Ressonância Magnética/métodos , Tomografia por Emissão de Pósitrons/métodos , Humanos , Imagem Multimodal/métodos , Pescoço/diagnóstico por imagem , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA