Magnetic resonance imaging aspects after surgical repair of knee cartilage: pictorial essay
The objective of this study was to present a series of clinical cases seen at our facility, illustrating the main techniques necessary for the repair of knee cartilage, as well as the magnetic resonance imaging techniques used in the postoperative evaluation and the relevant radiological findings.Resumo Radiologistas devem estar familiarizados com as principais t écnicas de reparo cirúrgico da cartilagem do joelho e os métodos de imagem disponíveis para sua avaliação, no intuito de otimizar o seguimento pós-operatório do paciente. O presente estudo tem por finalidade,...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Hepatic neuroendocrine neoplasm: imaging patterns
Neuroendocrine neoplasms (NENs) are a heterogeneous group of tumors with distinct morphological and biological manifestations, the liver being the main organ affected by its metastases. However, primary hepatic involvement is quite rare. Hepatic NENs can have a variety of radiological presentation forms and can therefore mimic other lesions, making their diagnosis challenging. Nonetheless, certain imaging aspects allow NENs to be included among the main differential diagnoses of hepatic lesions and can guide the search for an extrahepatic primary site when the probable diagnosis is metastases.As neoplasias neuroend ó...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Imaging evaluation of nonobstetric conditions during pregnancy: what every radiologist should know
Abstract In recent decades, there has been a significant increase in the number of imaging examinations performed on pregnant patients. That increase has occurred across the various modalities, including ultrasound, computed tomography, and magnetic resonance imaging. However, little is known about the risks that these examinations generate for the mother and fetus, related to the use of ionizing radiation or the use of contrast media. When pregnant patients are submitted to imaging studies, the principles of protection established by the International Commission on Radiological Protection should always be respected, to av...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Spinopelvic sagittal balance: what does the radiologist need to know?
This article aims to provide a comprehensive review of the literature on the spinopelvic parameters that are most relevant in clinical practice, as well as to describe compensatory mechanisms of the pelvis and lower limbs.O equil íbrio sagital descreve o alinhamento ideal da coluna vertebral no plano sagital, sendo resultante da interação entre a coluna e os membros inferiores, por meio da bacia. O entendimento do equilíbrio sagital ganhou importância principalmente na última década, uma vez que o desequilíbrio sagit al se correlaciona diretamente com incapacidade e do...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Modified hydrodissection for computed tomography-guided biopsy of mediastinal lesions: the “marshmallow” technique
Conclusion: A significant proportion of the surveyed students perceive AI as a threat to the radiological practice, which impacts their career choice. However, the majority claims to have insufficient knowledge of it and believes more information is needed for decision-making.Resumo Objetivo: Avaliar o impacto da intelig ência artificial (IA) na escolha de radiologia como especialidade médica por estudantes de medicina. Materiais e Métodos: Em fevereiro de 2019, uma pesquisa online anônima foi enviada a estudantes de medicina contemplando questões como: o quanto os alunos julgam conhecer as...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Transgluteal access for computed tomography-guided percutaneous puncture of prostatic abscesses
Conclusion: A significant proportion of the surveyed students perceive AI as a threat to the radiological practice, which impacts their career choice. However, the majority claims to have insufficient knowledge of it and believes more information is needed for decision-making.Resumo Objetivo: Avaliar o impacto da intelig ência artificial (IA) na escolha de radiologia como especialidade médica por estudantes de medicina. Materiais e Métodos: Em fevereiro de 2019, uma pesquisa online anônima foi enviada a estudantes de medicina contemplando questões como: o quanto os alunos julgam conhecer as...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Impact of artificial intelligence on the choice of radiology as a specialty by medical students from the city of São Paulo
Conclusion: A significant proportion of the surveyed students perceive AI as a threat to the radiological practice, which impacts their career choice. However, the majority claims to have insufficient knowledge of it and believes more information is needed for decision-making.Resumo Objetivo: Avaliar o impacto da intelig ência artificial (IA) na escolha de radiologia como especialidade médica por estudantes de medicina. Materiais e Métodos: Em fevereiro de 2019, uma pesquisa online anônima foi enviada a estudantes de medicina contemplando questões como: o quanto os alunos julgam conhecer as...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Proportional vascularization along the fallopian tubes and ovarian fimbria: assessment by confocal microtomography
Abstract Objective: To evaluate and reconstruct three-dimensional images of vascularization along the fallopian tube (FT), as well as to determine its relationship with the ovary and ovarian fimbria, and to quantify the blood vessels along the FT according to its anatomical segments, using confocal microtomography (micro-CT). Materials and Methods: Nine specimens (six FTs and three FTs with ovaries) were fixed in a solution of 10% formalin for> 24 h at room temperature. Iodine staining was performed by soaking the specimens in 10% Lugol ’ s solution for 24 h. All specimens were evaluated using micro-CT. A morphome...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Antegrade insertion of a double J catheter in the treatment of malignant ureteral obstruction: a retrospective analysis of the results obtained with a modified technique at a university hospital
Conclusion: In patients with ureteral obstruction due to malignancy, antegrade JJ stenting is safe and effective. The technique selected in our study is easily reproduced and can be performed by a trained professional.Artigos Objetivo: An álise retrospectiva dos resultados de uma técnica modificada de inserção anterógrada de cateter duplo J em pacientes com obstrução do trato urinário por causas oncológicas. Materiais e Métodos: Coleta e análise retrospectiva de dados de pacientes submetidos a inserção anterógrada de c ateter ...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Comparison of automated and manual protocols for magnetic resonance imaging assessment of liver iron concentration
Abstract Objective: To compare automated and manual magnetic resonance imaging protocols for estimating liver iron concentrations at 1.5 T. Materials and Methods: Magnetic resonance imaging examination of the liver was performed in 53 patients with clinically suspected hepatic iron overload and in 21 control subjects. Liver iron concentrations were then estimated by two examiners who were blinded to the groups. The examiners employed automated T2* and T1 mapping, as well as manual T2* and signal-intensity-ratio method. We analyzed accuracy by using ROC curves. Interobserver and intraobserver agreement were analyzed by calc...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Early trends and predictors of renal function following computed tomography-guided percutaneous cryoablation of a renal mass in patients with and without prior renal impairment
Abstract Objective: To assess trends and predictors of the glomerular filtration rate (GFR) after renal mass cryoablation in patients with and without history of renal impairment. Materials and Methods: This was a retrospective study of 39 patients who underwent computed tomography-guided percutaneous cryoablation of a renal mass, divided into two groups: those with prior renal impairment (PRI+); and those without prior renal impairment (PRI − ). The GFR trend and the chronic kidney disease stage were evaluated at baseline, as well as at 1, 6, and 12 months after cryoablation. Predictors of GFR at 1 and 6 months were...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

The diagnosis of focal liver lesions in pediatric patients
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Imaging evaluation of hallux valgus
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Renal function after percutaneous cryoablation of renal masses
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research

Retraction
Abstract Various neuropathologies produce hyperintense signals on T2-weighted or fluid-attenuated inversion recovery sequences of the temporal lobes. Recognition of the distribution pattern and associated findings may narrow the spectrum of differential diagnoses or suggest a specific disease. This pictorial essay aims to illustrate the relatively common diseases that affect the temporal lobe, such as herpes simplex encephalitis, neurosyphilis, limbic encephalitis, postictal edema, neoplasia, and multiple sclerosis, as well as those that are less common, such as myotonic dystrophy type 1, CADASIL, and CARASIL, together wit...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Differential diagnosis of temporal lobe lesions with hyperintense signal on T2-weighted and FLAIR sequences: pictorial essay
Abstract Various neuropathologies produce hyperintense signals on T2-weighted or fluid-attenuated inversion recovery sequences of the temporal lobes. Recognition of the distribution pattern and associated findings may narrow the spectrum of differential diagnoses or suggest a specific disease. This pictorial essay aims to illustrate the relatively common diseases that affect the temporal lobe, such as herpes simplex encephalitis, neurosyphilis, limbic encephalitis, postictal edema, neoplasia, and multiple sclerosis, as well as those that are less common, such as myotonic dystrophy type 1, CADASIL, and CARASIL, together wit...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Focal hyperechoic liver lesions in children: far beyond hemangiomas - pictorial essay
Abstract The aim of this report was to present a selection of focal hyperechoic liver lesions of different etiologies, illustrating the wide spectrum of diagnostic possibilities for such lesions in the pediatric population.Resumo Apresentamos uma sele ção de lesões focais hiperecogênicas hepáticas de diversas etiologias, que ilustram o grande espectro de diferentes possibilidades diagnósticas dessas lesões na faixa pediátrica, muito além dos hemangiomas. (Source: Radiologia Brasileira)
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Ultrasound versus electromyography for the detection of fasciculation in amyotrophic lateral sclerosis: systematic review and meta-analysis
The objective of this study was to determine the diagnostic accuracy of ultrasound and electromyography for the detection of fasciculation in patients with amyotrophic lateral sclerosis and to compare detection rates between the two methods. By searching the Cochrane Library, MEDLINE, Excerpta Medica, and Latin-American and Caribbean Health Sciences Literature databases, we identified studies evaluating the diagnostic accuracy and fasciculation detection rates of ultrasound and electromyography. The Quality Assessment of Diagnostic Accuracy Studies, version 2, and RTI item bank tools were used for the evaluation of methodo...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Computed tomography-guided percutaneous neurolysis of celiac plexus: technical description
Conclusion: Granular cell tumors of the breast pose a diagnostic challenge because they can present with clinical and imaging features mimicking malignancy, and the diagnosis is therefore provided by pathology. Radiologists should be familiarized with this entity, so they can be aware of the fact that breast lesions with spiculated margins can be indicative of diagnoses other than malignancy.Resumo Objetivo: Rever as caracter ísticas de imagem dos tumores de células granulares da mama (mamográficas, ultrassonográficas e de ressonância magnética), estabelecendo uma correlaç&at...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Fetal skeletal dysplasias: a new way to look at them
Conclusion: Granular cell tumors of the breast pose a diagnostic challenge because they can present with clinical and imaging features mimicking malignancy, and the diagnosis is therefore provided by pathology. Radiologists should be familiarized with this entity, so they can be aware of the fact that breast lesions with spiculated margins can be indicative of diagnoses other than malignancy.Resumo Objetivo: Rever as caracter ísticas de imagem dos tumores de células granulares da mama (mamográficas, ultrassonográficas e de ressonância magnética), estabelecendo uma correlaç&at...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Granular cell tumor of the breast: correlations between imaging and pathology findings
Conclusion: Granular cell tumors of the breast pose a diagnostic challenge because they can present with clinical and imaging features mimicking malignancy, and the diagnosis is therefore provided by pathology. Radiologists should be familiarized with this entity, so they can be aware of the fact that breast lesions with spiculated margins can be indicative of diagnoses other than malignancy.Resumo Objetivo: Rever as caracter ísticas de imagem dos tumores de células granulares da mama (mamográficas, ultrassonográficas e de ressonância magnética), estabelecendo uma correlaç&at...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Background parenchymal enhancement: behavior during neoadjuvant chemotherapy for breast cancer and relationship with a pathological complete response
Abstract Objective: To evaluate background parenchymal enhancement (BPE) and its characteristics, as well as its behavior before and after neoadjuvant chemotherapy (NAC), in both breasts of patients with unilateral breast cancer. Materials and Methods: This was a retrospective, cross-sectional observational study involving a consecutive sample of women with invasive breast cancer who underwent breast magnetic resonance imaging (MRI) between July 2007 and July 2017, as well as undergoing dynamic contrast-enhanced MRI before and after NAC. In both breasts, we evaluated the BPE in accordance with the Breast Imaging Reporting ...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

The value of signal intensity on T1-weighted chemical shift magnetic resonance imaging combined with proton magnetic resonance spectroscopy for the diagnosis of adrenal adenomas
Conclusion: Determining the SII and metabolite ratios increased the accuracy of the differential diagnosis of adrenal adenomas.Resumo Objetivo: Investigar as vantagens do uso de medi ções do índice de intensidade de sinal modificadas em imagens de deslocamento químico (chemical shift), isoladamente ou em conjunto com a espectroscopia por ressonância magnética de prótons, no diagnóstico diferencial de adenomas adrenais. Materiais e Métodos: Estudo prospectivo envolvendo 97 pacientes com nódulos ou massas adrenais. O índice de intensidade do sinal (S...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Accuracy of magnetic resonance imaging for diagnosing hallux valgus
Conclusion: Hallux valgus can be diagnosed by measuring the HVA on MRI, satisfact ory accuracy being achieved with an HVA cutoff of 16.4°.Resumo Objetivo: Avaliar a acur ácia da ressonância magnética (RM) para o diagnóstico de hálux valgo usando radiografias com carga como padrão ouro. Materiais e Métodos: Análise retrospectiva de pacientes que realizaram RM do antepé e radiografias com carga, de janeiro a junho de 2015. O ângulo metatarsofalangiano (AMF) foi medido nas RMs e nas radiografias. O teste de Wilcoxon e regressão linear foram utiliza...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Estimating the productivity of radiologists in Brazil: the search for a benchmark
Conclusion: We demonstrated that the productivity of radiologists is associated with the characteristics of their employment. We hope that this study will encourage other studies aimed at evaluating the productive capacity of the radiologists in Brazil, addressing the various functions they perform in their daily routine, including activities other than issuing reports.Resumo Objetivo: Estimar a produtividade m édia dos radiologistas brasileiros em número de laudos emitidos por período de trabalho de seis horas, analisando variáveis que possam influenciar os resultados. Materiais e Método...
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

PET/CT and the solitary pulmonary nodule
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Imaging methods in the assessment of nonalcoholic fatty liver disease
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Information about the new coronavirus disease (COVID-19)
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - April 17, 2020 Category: Radiology Source Type: research

Prevalence of additional primary malignancies detected incidentally on PET/CT
Abstract Hip pain in a child can have infectious, inflammatory, traumatic, neoplastic, or developmental causes, which can make the diagnosis challenging. Meticulous history taking and a detailed clinical examination guide the radiological investigation. In this article, we address some of the main causes of hip pain in childhood and their findings on diagnostic imaging.Resumo A dor do quadril na crian ça pode resultar de causas infecciosas, inflamatórias, traumáticas, neoplásicas ou de desenvolvimento, por vezes gerando desafios diagnósticos. Uma história meticulosa e um exame cl&i...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Hip pain in childhood
Abstract Hip pain in a child can have infectious, inflammatory, traumatic, neoplastic, or developmental causes, which can make the diagnosis challenging. Meticulous history taking and a detailed clinical examination guide the radiological investigation. In this article, we address some of the main causes of hip pain in childhood and their findings on diagnostic imaging.Resumo A dor do quadril na crian ça pode resultar de causas infecciosas, inflamatórias, traumáticas, neoplásicas ou de desenvolvimento, por vezes gerando desafios diagnósticos. Uma história meticulosa e um exame cl&i...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Main complications of hip arthroplasty: pictorial essay
Abstract Hip arthroplasty is a widely used and successful orthopedic procedure for the treatment of degenerative, inflammatory, or traumatic joint disease. The procedure promotes significant pain relief, as well as recovery of limb function, reduction of disability, and better quality of life. However, there are related complications, which have characteristic imaging aspects. In the present study, we review the literature and exemplify such complications using images obtained at our facility, illustrating the main radiological aspects of complications such as heterotopic ossification, periprosthetic fractures, osteolysis,...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Ultrasound elastography in patients with fatty liver disease
Abstract Hepatic steatosis, or fatty liver disease, occurs due to the accumulation of lipids in hepatocytes. When it becomes chronic, lobular inflammation develops and the disease can evolve to hepatic fibrosis, liver cirrhosis, or hepatocellular carcinoma. Early diagnosis is desirable because patients diagnosed in the early stage of the disease respond better to treatment. In the early stages of fatty liver disease, the physical examination is often unremarkable. Fatty liver disease and hepatic fibrosis can be diagnosed and monitored through laboratory tests, imaging, and biopsy. Among the imaging methods, ultrasound stan...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Evaluating inflammatory activity in Crohn’s disease by cross-sectional imaging techniques
The objective of this article is to review the main technical aspects of CTE and MRE, together with their indications, contraindications, and limitations, as well as the CTE and MRE imaging characteristics of inflammatory activity in Crohn ’ s disease.Resumo A avalia ção da atividade inflamatória intestinal em pacientes com doença de Crohn tem sido tradicionalmente um desafio, principalmente pela dificuldade do acesso endoscópico ao intestino delgado. Por muito tempo os estudos baritados foram a única opção disponível, tendo sido progressivamente substi t...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Fallopian tube vascularization observed by microfocus computed tomography
Conclusion: The best cutoff value for a quantitative CAD system to classify breast masses was 75%.Resumo Objetivo: Determinar o melhor valor de corte para classificar os n ódulos mamários pela elastografia por ultrassom, usando um software dedicado para elastografia por deformação, e determinar o nível de concordância interobservadores. Materiais e Métodos: Foram incluídos no estudo 83 pacientes com 83 massas mamárias identificadas no ultrassom e encaminhado s para biópsia. Após o exame ultrassonográfico no modo B, as lesões foram man...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Ultrasonographic aspects of the Achilles tendon after tenotomy for the treatment of congenital clubfoot by the Ponseti technique
Conclusion: The best cutoff value for a quantitative CAD system to classify breast masses was 75%.Resumo Objetivo: Determinar o melhor valor de corte para classificar os n ódulos mamários pela elastografia por ultrassom, usando um software dedicado para elastografia por deformação, e determinar o nível de concordância interobservadores. Materiais e Métodos: Foram incluídos no estudo 83 pacientes com 83 massas mamárias identificadas no ultrassom e encaminhado s para biópsia. Após o exame ultrassonográfico no modo B, as lesões foram man...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Breast elastography: diagnostic performance of computer-aided diagnosis software and interobserver agreement
Conclusion: The best cutoff value for a quantitative CAD system to classify breast masses was 75%.Resumo Objetivo: Determinar o melhor valor de corte para classificar os n ódulos mamários pela elastografia por ultrassom, usando um software dedicado para elastografia por deformação, e determinar o nível de concordância interobservadores. Materiais e Métodos: Foram incluídos no estudo 83 pacientes com 83 massas mamárias identificadas no ultrassom e encaminhado s para biópsia. Após o exame ultrassonográfico no modo B, as lesões foram man...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Diagnostic accuracy of retrospective application of the Vesical Imaging-Reporting and Data System: preliminary results
Conclusion: The VI-RADS appears to estimate correctly the degree of muscle invasion in suspicious bladder lesions. However, prospective studies evaluating larger samples are needed in order to validate the method.Resumo Objetivo: O objetivo deste estudo foi avaliar retrospectivamente a acur ácia do Vesical Imaging-Reporting and Data System (VI-RADS) para detectar invasão muscular em câncer de bexiga. Materiais e Métodos: Foram inseridos pacientes submetidos a ressonância magnética pélvica e a ressecção transuretral de bexiga entre 2015 e 2018. Trinta casos foram ...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Use of the LI-RADS classification in patients with cirrhosis due to infection with hepatitis B, C, or D, or infected with hepatitis B and D
Conclusion: Lesions categorized as LI-RADS 5 were detected in approximately 32% of the patients, with almost perfect agreement between the radiologists. The level of agreement was substantial or moderate for the other LI-RADS categories.Resumo Objetivo: Avaliar les ões hepáticas de acordo com a classificação LI-RADS nas tomografias computadorizadas de pacientes com hepatite B, co-infectados ou não com vírus delta, e com hepatite C crõnica, e o grau de concordância entre os radiologistas. Materiais e Métodos: Foram incluídos 38 pacientes com hepatite B, co...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Ultrasound evaluation of schistosomiasis-related morbidity among the Xakriabá people in the state of Minas Gerais, Brazil
Abstract Objective: To use ultrasound to investigate the morbidity related to schistosomiasis in the Xakriab á indigenous population. Materials and Methods: This was a field-based census study conducted in the territory of the Xakriabá people. A total of 166 individuals were invited, and 148 ( ≤ 77 years of age) agreed to participate. Most participants underwent abdominal ultrasound, physical examination, and stool examination. Mann-Whitney U and chi-square tests were used for comparisons. We determined risk by calculating odds ratio (OR) and performed logistic regression analysis. Results: Schistosoma man...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Use of PET/CT to aid clinical decision-making in cases of solitary pulmonary nodule: a probabilistic approach
Conclusion: 18F-FDG-PET/CT was able to modify the probability of malignancy classification of a solitary pulmonary nodule in more than 50% of the cases evaluated.Resumo Objetivo: Determinar a frequ ência em que a PET/CT com FDG-18F muda a classificação de probabilidade de malignidade do nódulo pulmonar solitário. Materiais e Métodos: Foi realizada análise retrospectiva de todas as PET/CTs com FDG-18F realizadas entre maio/2016 e maio/2017 num serviço de medicina nuclear, cuja indicaç ão era a avaliação de nódulo pulmonar solitá...
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Hip arthroplasty: current concepts and potential complications
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Radiologia Brasileira: the constant struggle for its improvement
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - February 3, 2020 Category: Radiology Source Type: research

Infiltrative subependymoma of the brainstem: an uncommon presentation
Abstract Iatrogenic lesion of the bile ducts is a relatively common occurrence during liver surgery, increasing morbidity and mortality rates. T2-weighted magnetic resonance cholangiography and gadoxetic acid-enhanced functional magnetic resonance cholangiography (fMRC) with administration of hepatobiliary-specific contrast medium (gadoxetic acid) are fundamental to the diagnostic imaging approach in patients with such lesions. Here, we present a review of the literature and suggest an imaging approach to biliary tract injury, focusing on clinical cases in which fMRC had an impact on the decision-making process for the man...
Source: Radiologia Brasileira - November 26, 2019 Category: Radiology Source Type: research

Lymphocytic interstitial pneumonia and pulmonary amyloidosis in Sjögren's syndrome
Abstract Iatrogenic lesion of the bile ducts is a relatively common occurrence during liver surgery, increasing morbidity and mortality rates. T2-weighted magnetic resonance cholangiography and gadoxetic acid-enhanced functional magnetic resonance cholangiography (fMRC) with administration of hepatobiliary-specific contrast medium (gadoxetic acid) are fundamental to the diagnostic imaging approach in patients with such lesions. Here, we present a review of the literature and suggest an imaging approach to biliary tract injury, focusing on clinical cases in which fMRC had an impact on the decision-making process for the man...
Source: Radiologia Brasileira - November 26, 2019 Category: Radiology Source Type: research

Ureterocolic fistula as an incidental finding after barium enema
Abstract Iatrogenic lesion of the bile ducts is a relatively common occurrence during liver surgery, increasing morbidity and mortality rates. T2-weighted magnetic resonance cholangiography and gadoxetic acid-enhanced functional magnetic resonance cholangiography (fMRC) with administration of hepatobiliary-specific contrast medium (gadoxetic acid) are fundamental to the diagnostic imaging approach in patients with such lesions. Here, we present a review of the literature and suggest an imaging approach to biliary tract injury, focusing on clinical cases in which fMRC had an impact on the decision-making process for the man...
Source: Radiologia Brasileira - November 26, 2019 Category: Radiology Source Type: research

Not all Bosniak category IV cysts are malignant: foreign body granuloma mimicking renal cell carcinoma
Abstract Iatrogenic lesion of the bile ducts is a relatively common occurrence during liver surgery, increasing morbidity and mortality rates. T2-weighted magnetic resonance cholangiography and gadoxetic acid-enhanced functional magnetic resonance cholangiography (fMRC) with administration of hepatobiliary-specific contrast medium (gadoxetic acid) are fundamental to the diagnostic imaging approach in patients with such lesions. Here, we present a review of the literature and suggest an imaging approach to biliary tract injury, focusing on clinical cases in which fMRC had an impact on the decision-making process for the man...
Source: Radiologia Brasileira - November 26, 2019 Category: Radiology Source Type: research

The role of gadoxetic acid-enhanced magnetic resonance cholangiography in the evaluation of postoperative bile duct injury: pictorial essay
Abstract Iatrogenic lesion of the bile ducts is a relatively common occurrence during liver surgery, increasing morbidity and mortality rates. T2-weighted magnetic resonance cholangiography and gadoxetic acid-enhanced functional magnetic resonance cholangiography (fMRC) with administration of hepatobiliary-specific contrast medium (gadoxetic acid) are fundamental to the diagnostic imaging approach in patients with such lesions. Here, we present a review of the literature and suggest an imaging approach to biliary tract injury, focusing on clinical cases in which fMRC had an impact on the decision-making process for the man...
Source: Radiologia Brasileira - November 26, 2019 Category: Radiology Source Type: research

Twist and shout: magnetic resonance imaging findings in ovarian torsion
The objective of this essay was to review and illustrate the various magnetic resonance imaging findings in ovarian torsion.Resumo A tor ção anexial é caracterizada por rotação parcial ou completa do ligamento suspensor do ovário e seu pedículo vascular correspondente, resultando em comprometimento vascular que pode culminar em infarto hemorrágico e necrose tecidual do ovário e da tuba uterina. Diante da gama de diagnóstico s diferenciais de dor pélvica aguda, o diagnóstico é muitas vezes considerado desafiador, devendo o radiologist...
Source: Radiologia Brasileira - November 26, 2019 Category: Radiology Source Type: research

Artificial intelligence, machine learning, computer-aided diagnosis, and radiomics: advances in imaging towards to precision medicine
Abstract The discipline of radiology and diagnostic imaging has evolved greatly in recent years. We have observed an exponential increase in the number of exams performed, subspecialization of medical fields, and increases in accuracy of the various imaging methods, making it a challenge for the radiologist to “ know everything about all exams and regions ” . In addition, imaging exams are no longer only qualitative and diagnostic, providing now quantitative information on disease severity, as well as identifying biomarkers of prognosis and treatment response. In view of this, computer-aided diagnosis systems h...
Source: Radiologia Brasileira - November 26, 2019 Category: Radiology Source Type: research

Fetal posterior fossa malformations: review of the current knowledge
Abstract Ultrasound diagnosis of posterior fossa malformations in the prenatal period is a challenge, having major implications for the counseling and follow-up of pregnant women. The purpose of this study was to review aspects of the ultrasound evaluation of the fetal posterior fossa, as well as to describe the most relevant ultrasound findings of the main posterior fossa malformations that can affect the fetus in the prenatal period.Resumo O diagn óstico ultrassonográfico das malformações da fossa posterior no período pré-natal é um desafio, com importantes implicaç...
Source: Radiologia Brasileira - November 26, 2019 Category: Radiology Source Type: research