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2.
Medicine (Baltimore) ; 99(9): e19300, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32118747

RESUMEN

To characterize the fractional amplitude of low-frequency fluctuation (fALFF) in drug-naïve first-episode female patients with anorexia nervosa (AN) using resting-state functional magnetic resonance imaging (rs-fMRI).Whole brain rs-fMRI data were collected from 7 drug-naïve first-episode female patients with DSM-5 AN and 14 age-matched healthy female controls. fALFF values were calculated and compared between the two groups using a two-sample t test. Correlation analysis between the fALFF values in the entire brain and body mass index (BMI) was performed.Compared with the healthy controls, increased fALFF values were observed in the AN patients in their right hippocampus and left superior frontal gyrus, while decreased fALFF values were observed in their left rectus and left middle occipital gyrus. Moreover, low BMI was significantly associated with decreased fALFF in the left inferior frontal gyrus but increased fALFF in the left calcarine. In particular, the z-standardized fALFF (zfALFF) value of the left rectus was positive associated with BMI.Our findings suggest that spontaneous brain activity in the frontal region, hippocampus and rectus, characterized by fALFF values, was altered in drug-naïve, first-episode female patients with AN.


Asunto(s)
Anorexia Nerviosa/tratamiento farmacológico , Imagen por Resonancia Magnética/normas , Adolescente , Adulto , Anorexia Nerviosa/fisiopatología , Anorexia Nerviosa/psicología , China , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Imagen por Resonancia Magnética/estadística & datos numéricos , Lóbulo Occipital/anomalías , Lóbulo Occipital/anatomía & histología , Corteza Prefrontal/anomalías , Corteza Prefrontal/anatomía & histología
3.
Medicine (Baltimore) ; 99(9): e19314, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32118758

RESUMEN

BACKGROUND: Ruling out distant metastases, non-small cell lung cancer (NSCLC)treatment depends on the results of mediastinal node staging (N staging). Several diagnostic methods play central roles in mediastinal N staging. This study is intended to evaluate the existing diagnostic methods and report quality, and to search for the best method for staging mediastinal lymph nodes. METHODS: We searched PubMed, Embase, and the Cochrane Library to identify relevant studies, including randomized controlled trials and retrospective studies. These studies report the application of computed tomography, positron emission tomography-computed tomography, magnetic resonance imaging, endobronchial ultrasound, and mediastinoscopy in the diagnosis of mediastinal lymph node staging of NSCLC. The quality of the literature was assessed using the Quality Assessment of Diagnostic Accuracy Study 2. The true positive, false positive, true negative, and false negative of each study was extracted. The corresponding sensitivity, specificity, and other indicators were calculated and the Summary Receiver Operating curve was established. Then, head-to-head and indirect comparison meta-analyses will be conducted. RESULTS: The results of this study will be published in a peer-reviewed journal. CONCLUSION: This study will provide basis for mediastinal lymph node staging of non-small cell lung cancer. PROSPERO REGISTRATION NUMBER: CRD42019145667.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas/diagnóstico , Diagnóstico por Imagen/normas , Ganglios Linfáticos/fisiopatología , Estadificación de Neoplasias/normas , Anciano , Carcinoma de Pulmón de Células no Pequeñas/fisiopatología , Protocolos Clínicos , Diagnóstico por Imagen/métodos , Endoscopía/métodos , Endoscopía/normas , Femenino , Humanos , Ganglios Linfáticos/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Imagen por Resonancia Magnética/normas , Masculino , Mediastinoscopía/métodos , Mediastinoscopía/normas , Persona de Mediana Edad , Estadificación de Neoplasias/métodos , Tomografía Computarizada por Tomografía de Emisión de Positrones/métodos , Tomografía Computarizada por Tomografía de Emisión de Positrones/normas , Tomografía Computarizada por Rayos X/métodos , Tomografía Computarizada por Rayos X/normas , Ultrasonografía/métodos , Ultrasonografía/normas
4.
Medicine (Baltimore) ; 99(9): e19386, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32118788

RESUMEN

Case-control studies have shown that noxious thermal stimulation (TS) can improve arm function in patients with stroke. However, the neural mechanisms underlying this improvement are largely unknown. We explored functional neural activation due to noxious and innocuous TS intervention applied to the paretic arm of patients with stroke. Sixteen participants with unilateral cortical infarctions were allocated to one of two groups: noxious TS (8 patients; temperature combination: hot pain 46°C to 47°C, cold pain 7°C-8°C) or innocuous TS (n = 8; temperature combination: hot 40°C-41°C, cold 20°C-21°C). All subjects underwent fMRI scanning before and after 30 min TS intervention and performed a finger tapping task with the affected hand. Immediate brain activation effects were assessed according to thermal type (noxious vs. innocuous TS) and time (pre-TS vs post-TS). Regions activated by noxious TS relative to innocuous TS (P < .05, adjusted for multiple comparisons) were related to motor performance and sensory function in the bilateral primary somatosensory cortices, anterior cingulate cortex, insula, thalamus, hippocampus and unilateral primary motor cortex, secondary somatosensory cortex at the contralateral side of lesion, and unilateral supplementary motor area at the ipsilateral side of lesion. Greater activation responses were observed in the side contralateral to the lesion, suggesting a significant intervention effect. Our preliminary findings suggest that noxious TS may induce neuroplastic changes unconstrained to the local area.Trial registration: NCT01418404.


Asunto(s)
Calor/uso terapéutico , Estimulación Física/métodos , Rehabilitación de Accidente Cerebrovascular/métodos , Adulto , Anciano , Análisis de Varianza , Estudios de Casos y Controles , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Masculino , Persona de Mediana Edad , Estimulación Física/instrumentación , Accidente Cerebrovascular/fisiopatología , Accidente Cerebrovascular/terapia , Rehabilitación de Accidente Cerebrovascular/instrumentación
5.
J Comput Assist Tomogr ; 44(2): 248-254, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32195804

RESUMEN

We aim to review the imaging appearance of fulminant demyelinating disorders of central nervous system that have different pathological features, clinical course, clinical features, and imaging findings different from classic multiple sclerosis. Routine magnetic resonance imaging (MRI) can help in accurate localization of the lesions, detection of associated lesions, and monitoring of these patients. Advanced MRI combined with routine MRI can aid in differentiation fulminant demyelinating lesions from simulating malignancy. Tumefactive demyelination lesions are located in supratentorial white matter mainly frontal and parietal regions with incomplete rim enhancement. Baló concentric sclerosis shows characteristic concentric onion skin appearance. Schilder disease is subacute or acute demyelinating disorders with one or more lesions commonly involving the centrum semiovale. Marburg disease is the most severe demyelinating disorder with diffuse infiltrative lesions and massive edema involving both the cerebral hemisphere and brain stem.


Asunto(s)
Encéfalo/diagnóstico por imagen , Enfermedades Desmielinizantes/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Encéfalo/patología , Enfermedades Desmielinizantes/patología , Humanos
6.
J Comput Assist Tomogr ; 44(2): 255-261, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32195805

RESUMEN

OBJECTIVE: We aimed to determine the effects of recombinant human growth hormone (rhGH) replacement on cognitive function in subjects with poststroke cognitive impairment using resting-state functional magnetic resonance imaging. METHODS: We included 60 patients with a first-ever stroke for 3 months and a diagnosis of cognitive impairment who were randomized 1:1 to receive either rhGH subcutaneously or placebo injection for 6 months. All subjects were required to receive the same rehabilitative therapy program. Both groups were subjected to pretreatment and posttreatment neuropsychological assessment using the Montreal Cognitive Assessment, serum neurotrophic factors, biomarkers of glucose and lipid metabolism, and functional magnetic resonance imaging during 6 months of the study period. The pattern of brain activity was determined by examining the functional connectivity and amplitude of low-frequency fluctuations (ALFF) of blood oxygen level dependent signal. RESULTS: Forty-three (82.7%) completed the study. Treatment with rhGH reduced levels of triglycerides and low-density lipoprotein cholesterol but did not significantly altered plasma concentrations of glucose and glycated hemoglobin. We found a significant increase in serum insulin-like growth factor 1 levels (32.6%; P < 0.001) in the rhGH-treated group compared with that in the controls. After 6 months of rhGH treatment, mean Montreal Cognitive Assessment score improved from 16.31 (5.32) to 21.19 (6.54) (P < 0.001). The rhGH group showed significant increased area of activation with increased ALFF values in the regions of the frontal lobe, putamen, temporal lobe, and thalamus (P < 0.05), relative to the baseline conditions. The correlation analysis revealed that the ALFF and functional connectivity of default mode network was positively correlated with the ΔMoCA score and ΔIGF-1 levels; that is, the more the scale score increased, the higher the functional connection strength. No undesirable adverse effects were observed. CONCLUSIONS: The rhGH replacement has a significant impact on global and domain cognitive functions in poststroke cognitive impairment.


Asunto(s)
Disfunción Cognitiva/complicaciones , Disfunción Cognitiva/tratamiento farmacológico , Hormona de Crecimiento Humana/uso terapéutico , Imagen por Resonancia Magnética/métodos , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/tratamiento farmacológico , Encéfalo/diagnóstico por imagen , Encéfalo/efectos de los fármacos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas , Resultado del Tratamiento
7.
J Comput Assist Tomogr ; 44(2): 269-274, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32195807

RESUMEN

OBJECTIVE: To prospectively compare the performance of model-based and model-free dynamic contrast-enhanced (DCE) pharmacokinetic parameters in monitoring breast cancers' early response to neoadjuvant chemotherapy (NACT). METHODS: Sixty patients, with 61 pathology-proven breast cancers, were examined using DCE magnetic resonance imaging before, after the first cycle, and after full cycles of NACT. Both model-based (Ktrans and others) and model-free parameters, mainly time-intensity curve (TIC), were measured. According to Miller-Payne grading, patients were divided into response and nonresponse group. Mann-Whitney U test, Fisher exact test, multivariate logistic regression, and receiver operating characteristic curve were used in analysis. RESULTS: After the first cycle, among all the parameters, Ktrans and TIC were strongly associated with tumors' early response. There was no significant difference between the areas under receiver operating characteristic curve of Ktrans and TIC (0.768, 0.852, respectively). CONCLUSIONS: Model-based and model-free DCE parameters, especially Ktrans and TIC, have similar performance in predicting the efficacy of NACT for breast cancers.


Asunto(s)
Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/tratamiento farmacológico , Medios de Contraste/farmacocinética , Aumento de la Imagen/métodos , Imagen por Resonancia Magnética/métodos , Terapia Neoadyuvante/métodos , Adulto , Mama/diagnóstico por imagen , Femenino , Humanos , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Prospectivos , Resultado del Tratamiento
8.
JAMA ; 323(8): 746-756, 2020 Feb 25.
Artículo en Inglés | MEDLINE | ID: mdl-32207768

RESUMEN

Importance: Improved screening methods for women with dense breasts are needed because of their increased risk of breast cancer and of failed early diagnosis by screening mammography. Objective: To compare the screening performance of abbreviated breast magnetic resonance imaging (MRI) and digital breast tomosynthesis (DBT) in women with dense breasts. Design, Setting, and Participants: Cross-sectional study with longitudinal follow-up at 48 academic, community hospital, and private practice sites in the United States and Germany, conducted between December 2016 and November 2017 among average-risk women aged 40 to 75 years with heterogeneously dense or extremely dense breasts undergoing routine screening. Follow-up ascertainment of cancer diagnoses was complete through September 12, 2019. Exposures: All women underwent screening by both DBT and abbreviated breast MRI, performed in randomized order and read independently to avoid interpretation bias. Main Outcomes and Measures: The primary end point was the invasive cancer detection rate. Secondary outcomes included sensitivity, specificity, additional imaging recommendation rate, and positive predictive value (PPV) of biopsy, using invasive cancer and ductal carcinoma in situ (DCIS) to define a positive reference standard. All outcomes are reported at the participant level. Pathology of core or surgical biopsy was the reference standard for cancer detection rate and PPV; interval cancers reported until the next annual screen were included in the reference standard for sensitivity and specificity. Results: Among 1516 enrolled women, 1444 (median age, 54 [range, 40-75] years) completed both examinations and were included in the analysis. The reference standard was positive for invasive cancer with or without DCIS in 17 women and for DCIS alone in another 6. No interval cancers were observed during follow-up. Abbreviated breast MRI detected all 17 women with invasive cancer and 5 of 6 women with DCIS. Digital breast tomosynthesis detected 7 of 17 women with invasive cancer and 2 of 6 women with DCIS. The invasive cancer detection rate was 11.8 (95% CI, 7.4-18.8) per 1000 women for abbreviated breast MRI vs 4.8 (95% CI, 2.4-10.0) per 1000 women for DBT, a difference of 7 (95% CI, 2.2-11.6) per 1000 women (exact McNemar P = .002). For detection of invasive cancer and DCIS, sensitivity was 95.7% (95% CI, 79.0%-99.2%) with abbreviated breast MRI vs 39.1% (95% CI, 22.2%-59.2%) with DBT (P = .001) and specificity was 86.7% (95% CI, 84.8%-88.4%) vs 97.4% (95% CI, 96.5%-98.1%), respectively (P < .001). The additional imaging recommendation rate was 7.5% (95% CI, 6.2%-9.0%) with abbreviated breast MRI vs 10.1% (95% CI, 8.7%-11.8%) with DBT (P = .02) and the PPV was 19.6% (95% CI, 13.2%-28.2%) vs 31.0% (95% CI, 17.0%-49.7%), respectively (P = .15). Conclusions and Relevance: Among women with dense breasts undergoing screening, abbreviated breast MRI, compared with DBT, was associated with a significantly higher rate of invasive breast cancer detection. Further research is needed to better understand the relationship between screening methods and clinical outcome. Trial Registration: ClinicalTrials.gov Identifier: NCT02933489.


Asunto(s)
Densidad de la Mama , Neoplasias de la Mama/diagnóstico por imagen , Carcinoma Intraductal no Infiltrante/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Mamografía/métodos , Adulto , Anciano , Biopsia , Mama/diagnóstico por imagen , Mama/patología , Neoplasias de la Mama/patología , Carcinoma Intraductal no Infiltrante/patología , Estudios Transversales , Detección Precóz del Cáncer , Femenino , Estudios de Seguimiento , Humanos , Imagen por Resonancia Magnética/efectos adversos , Mamografía/efectos adversos , Persona de Mediana Edad , Invasividad Neoplásica , Valor Predictivo de las Pruebas , Estándares de Referencia , Sensibilidad y Especificidad
9.
Medicine (Baltimore) ; 99(12): e19464, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32195945

RESUMEN

RATIONALE: The aim of this report is to present the technique of selective nerve root blockage combined with posterior percutaneous cervical endoscopic discectomy (PPECD) for cervical spondylotic radiculopathy (CSR). PATIENT CONCERNS: A 49-year-old female has pain in the skin area of the left scapular, pain in left elbow and limitation of left upper limb movement for 1.5 years. DIAGNOSIS: She was diagnosed with CSR and C6-7 double nerve root variation. INTERVENTIONS: We used selective nerve root block to determine the lesion segment and applied PPECD to relieve pressure on the patient's nerve roots. OUTCOMES: The pain symptoms disappeared after the patient was treated with C6-7 nerve root block. Endoscopic displayed C6-7 double nerve root variation on the left side of the spinal cord intraoperative. The neurological function was intact postoperatively and no recurrence of cervical disc herniation during the 5 months' follow-up period. The hospitalization time was 5 days, the operation time was 68.2 minutes and the bleeding volume was 52.6 ml. There was no change in cervical curvature and cervical disc height postoperatively. Japanese Orthopaedic Association score, SF-36 score and Visual Analogue Scale score improved significantly postoperatively. LESSONS: The application of selective nerve root blockage combined with PPECD for CSR could achieve satisfactory effect of position and decompression of the injured nerve root. Besides, we recommend that surgery be performed under general anesthesia to minimize patients' emotional stress and discomfort.


Asunto(s)
Discectomía/métodos , Cuello/cirugía , Bloqueo Nervioso/métodos , Espondilosis/tratamiento farmacológico , Espondilosis/cirugía , Terapia Combinada , Descompresión Quirúrgica/métodos , Discectomía/instrumentación , Endoscopía/métodos , Femenino , Humanos , Imagen por Resonancia Magnética/métodos , Persona de Mediana Edad , Cuello/inervación , Cuello/patología , Radiculopatía/fisiopatología , Espondilosis/diagnóstico por imagen , Resultado del Tratamiento
10.
Medicine (Baltimore) ; 99(12): e19579, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32195972

RESUMEN

BACKGROUND: Numerous quantitatively based studies measuring the accuracy of MRI and MRA for the diagnosis of rotator cuff tears remain inconclusive. In order to compare the accuracy of MRI with MRA in detection of rotator cuff tears a meta-analysis was performed systematically. METHODS: PubMed/Medline and Embase were utilized to retrieve articles comparing the diagnostic performance of MRI and MRA for use in detecting rotator cuff tears. After screening and diluting out the articles that met inclusion criteria to be used for statistical analysis the pooled evaluation indexes including sensitivity and specificity as well as hierarchical summary receiver operating characteristic (HSROC) curves with 95% confidence interval (CI) were calculated. RESULTS: Screening determined that 12 studies involving a total of 1030 patients and 1032 shoulders were deemed viable for inclusion in the meta-analysis. The results of the analysis showed that MRA has a higher sensitivity and specificity than MRI for the detection of any tear; similar results were observed in the detection of full-thickness tears. However, for the detection of partial-thickness tear, MRI has similar performance with MRA. CONCLUSION: MRI is recommended to be a first-choice imaging modality for the detection of rotator cuff tears. Although MRA have a higher sensitivity and specificity, it cannot replace MRI after the comprehensive consideration of accuracy and practicality.


Asunto(s)
Artrografía/métodos , Imagen por Resonancia Magnética/métodos , Lesiones del Manguito de los Rotadores/diagnóstico por imagen , Manguito de los Rotadores/diagnóstico por imagen , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Artrografía/estadística & datos numéricos , Femenino , Humanos , Laceraciones/diagnóstico por imagen , Laceraciones/patología , Imagen por Resonancia Magnética/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Manguito de los Rotadores/patología , Rotura/diagnóstico por imagen , Rotura/patología , Sensibilidad y Especificidad , Adulto Joven
11.
Radiol Clin North Am ; 58(2): 199-213, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044002

RESUMEN

This article discusses the 4 main imaging modalities used to evaluate reproductive-aged women: ultrasound, magnetic resonance imaging, computed tomography, and fluoroscopy. For each modality, major clinical indications are described, along with important technical considerations unique to imaging reproductive-aged women. Finally, key safety issues are discussed, particularly with regard to imaging pregnant patients.


Asunto(s)
Imagen por Resonancia Magnética/métodos , Pelvis/diagnóstico por imagen , Tomografía Computarizada por Rayos X/métodos , Ultrasonografía/métodos , Adulto , Femenino , Fluoroscopía/efectos adversos , Fluoroscopía/métodos , Humanos , Imagen por Resonancia Magnética/efectos adversos , Órganos en Riesgo , Tomografía Computarizada por Rayos X/efectos adversos , Ultrasonografía/efectos adversos
12.
Radiol Clin North Am ; 58(2): 215-225, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044003

RESUMEN

Infertility, or subfertility, is the inability to achieve a clinical pregnancy after a 1-year period of regular unprotected sexual intercourse in women younger than 35 and after 6 months in women older than 35. Although initial assessment involves a multitude of factors, including a detailed medical history, physical examination, semen analysis, and hormonal evaluation, diagnostic imaging of the female partner often plays an important role in establishing the etiology for infertility. This article provides an overview of the multimodality imaging assessment of female infertility and details the developmental and acquired pelvic abnormalities in which diagnostic imaging aids in evaluation.


Asunto(s)
Trompas Uterinas/diagnóstico por imagen , Histerosalpingografía/métodos , Infertilidad Femenina/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Ultrasonografía/métodos , Útero/diagnóstico por imagen , Femenino , Humanos
13.
Radiol Clin North Am ; 58(2): 227-238, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044004

RESUMEN

Infertility, or subfertility, is the inability to achieve a clinical pregnancy after a 1-year period of regular unprotected sexual intercourse in women younger than 35 and after 6 months in women older than 35. Although initial assessment involves a multitude of factors, including a detailed medical history, physical examination, semen analysis, and hormonal evaluation, diagnostic imaging of the female partner often plays an important role in establishing the etiology for infertility. This article provides an overview of the multimodality imaging assessment of female infertility and details the developmental and acquired pelvic abnormalities in which diagnostic imaging aids in evaluation.


Asunto(s)
Histerosalpingografía/métodos , Infertilidad Femenina/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Conductos Paramesonéfricos/anomalías , Ultrasonografía/métodos , Útero/anomalías , Femenino , Humanos , Conductos Paramesonéfricos/diagnóstico por imagen , Útero/diagnóstico por imagen
14.
Radiol Clin North Am ; 58(2): 239-256, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044005

RESUMEN

Benign uterine diseases are common gynecologic conditions affecting women of all ages. Ultrasonography is traditionally the first-line imaging technique but patients are increasingly referred to magnetic resonance (MR) imaging because it is more accurate for diagnosis and patient management. This article highlights the added value of MR imaging in the diagnosis of the most common benign uterine diseases, describes therapeutic options, and delineates the role of MR imaging in treatment planning.


Asunto(s)
Imagen por Resonancia Magnética/métodos , Ultrasonografía/métodos , Enfermedades Uterinas/diagnóstico por imagen , Diagnóstico Diferencial , Femenino , Humanos , Enfermedades Uterinas/terapia , Útero/diagnóstico por imagen
15.
Radiol Clin North Am ; 58(2): 275-289, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044007

RESUMEN

In this article, the authors review the optimal imaging protocols for ultrasound and MR imaging of suspected endometriosis, review the compartmental approach to dictating these examinations, discuss the diagnostic criteria for endometriosis detection by anatomic site and the differential diagnosis, review pearls and pitfalls in diagnosis, and review what the referring physician needs to know.


Asunto(s)
Endometriosis/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Ultrasonografía/métodos , Femenino , Humanos
16.
Radiol Clin North Am ; 58(2): 291-303, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044008

RESUMEN

This article reviews different approaches for describing pelvic floor anatomy; "Classic 3-Compartment Approach", "Active and Passive Conceptual Approach" and "Multilayered System Approach". However, these approaches cannot explain pathogenesis of various dysfunctions. "Functional 3-Part Pelvic Supporting Systems Approach" a new, more function-based classification of the pelvic floor support system is introduced in which all structures that contribute to same function are grouped under 1 system. Indications for MR imaging of pelvic floor dysfunction, patients' preparation, static, dynamic and MR Defecography imaging protocols are detailed according to the concordance of experts in two recently published consensus papers.


Asunto(s)
Imagen por Resonancia Magnética/métodos , Trastornos del Suelo Pélvico/diagnóstico por imagen , Diafragma Pélvico/anatomía & histología , Diafragma Pélvico/diagnóstico por imagen , Femenino , Humanos , Diafragma Pélvico/fisiopatología , Trastornos del Suelo Pélvico/fisiopatología
17.
Radiol Clin North Am ; 58(2): 305-327, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044009

RESUMEN

Reporting MR imaging of pelvic floor dysfunction can be made easy if radiologists understand the aim of each MR sequence and what to report in each set of MR images. For an MR imaging report that is critical in decision making for patient management, it is of paramount importance to the radiologist to know what to look for and where to look for it. This article presents a new term, integrated MR analytical approach. A reporting template is included in which all MR findings are presented in a schematic form that can be easily interpreted by clinicians from different subspecialties.


Asunto(s)
Imagen Tridimensional/métodos , Imagen por Resonancia Magnética/métodos , Trastornos del Suelo Pélvico/diagnóstico por imagen , Humanos , Imagen por Resonancia Magnética/tendencias , Diafragma Pélvico/diagnóstico por imagen , Diafragma Pélvico/fisiopatología , Trastornos del Suelo Pélvico/fisiopatología
18.
Radiol Clin North Am ; 58(2): 329-345, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044010

RESUMEN

Acute pelvic pain in the nonpregnant woman is one of the most common conditions requiring emergent medical evaluation in routine clinical practice. Although clinical evaluation and laboratory testing are essential, imaging plays a central role. Although various adnexal and uterine disorders may result in acute pelvic pain of gynecologic origin, other nongynecologic disorders of the gastrointestinal and genitourinary systems may likewise result in acute pelvic pain. Ultrasound is first choice for initial evaluation of acute pelvic pain of gynecologic origin. Computed tomography is performed if pelvic sonography is inconclusive, or if a suspected disorder is nongynecologic in origin.


Asunto(s)
Dolor Agudo/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Dolor Pélvico/diagnóstico por imagen , Tomografía Computarizada por Rayos X/métodos , Ultrasonografía/métodos , Femenino , Humanos , Pelvis/diagnóstico por imagen
19.
Radiol Clin North Am ; 58(2): 363-380, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044012

RESUMEN

Abdominal pain is a common occurrence in pregnant women and may have a variety of causes, including those that are specific to pregnancy (eg, round ligament pain in the first trimester) and the wide range of causes of abdominal pain that affect men and women who are not pregnant (eg, appendicitis, acute cholecystitis). Noncontrast magnetic resonance (MR) imaging is increasingly performed to evaluate pregnant women with abdominal pain, either as the first-line test or as a second test following ultrasonography. The imaging appearance of causes of abdominal pain in pregnant women are reviewed with an emphasis on noncontrast MR imaging.


Asunto(s)
Abdomen Agudo/diagnóstico por imagen , Dolor Agudo/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Complicaciones del Embarazo/diagnóstico por imagen , Ultrasonografía/métodos , Adulto , Femenino , Humanos , Pelvis/diagnóstico por imagen , Embarazo
20.
Radiol Clin North Am ; 58(2): 381-399, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32044013

RESUMEN

Placenta is a vital organ that connects the maternal and fetal circulations, allowing exchange of nutrients and gases between the two. In addition to the fetus, placenta is a key component to evaluate during any imaging performed during pregnancy. The most common disease processes involving the placenta include placenta accreta spectrum disorders and placental masses. Several systemic processes such as infection and fetal hydrops can too affect the placenta; however, their imaging features are nonspecific such as placental thickening, heterogeneity, and calcifications. Ultrasound is the first line of imaging during pregnancy, and MR imaging is reserved for problem solving, when there is need for higher anatomic resolution.


Asunto(s)
Desprendimiento Prematuro de la Placenta/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Placenta Accreta/diagnóstico por imagen , Placenta Previa/diagnóstico por imagen , Ultrasonografía Prenatal/métodos , Femenino , Humanos , Placenta/diagnóstico por imagen , Embarazo
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