Endovascular treatment of abdominal aortic rupture after percutaneous lithotripsy
Abstract Hepatocellular carcinoma is the most common primary malignant liver tumour and is a leading cause of death worldwide. Despite the advent of screening programmes, most cases of hepatocellular carcinoma are diagnosed late (in an advanced stage) which precludes curative treatments such as surgery and ablation. Therefore, intra-arterial locoregional treatments now play a central role in the management of advanced hepatocellular carcinoma, such treatments ranging from trans-arterial chemo-embolisation to the more recently developed trans-arterial radio-embolisation technique. In this essay, we discuss the state of the ...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
New frontiers in endovascular therapies for locally advanced hepatocellular carcinoma
Abstract Hepatocellular carcinoma is the most common primary malignant liver tumour and is a leading cause of death worldwide. Despite the advent of screening programmes, most cases of hepatocellular carcinoma are diagnosed late (in an advanced stage) which precludes curative treatments such as surgery and ablation. Therefore, intra-arterial locoregional treatments now play a central role in the management of advanced hepatocellular carcinoma, such treatments ranging from trans-arterial chemo-embolisation to the more recently developed trans-arterial radio-embolisation technique. In this essay, we discuss the state of the ...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Placental magnetic resonance imaging: normal appearance, anatomical variations, and pathological findings
Abstract Placental magnetic resonance imaging (MRI) has been increasingly requested, especially for the evaluation of suspected cases of placental adhesive disorders, generally known as placenta accreta. Abdominal radiologists need to become familiar with normal placental anatomy, anatomical variations, the current terminology, and major placental diseases that, although rare, are important causes of maternal and fetal morbidity and mortality. The aim of this didactic pictorial essay is to illustrate various findings on placental MRI, as well as to emphasize the importance of communication between radiologists and obstetri...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Clinical and radiological aspects of bilateral temporal abnormalities: pictorial essay
Abstract The temporal lobes are vulnerable to several diseases, including infectious, immune-mediated, degenerative, vascular, metabolic, and neoplastic processes. Therefore, lesions in the temporal lobes can pose a diagnostic challenge for the radiologist. The temporal lobes are connected by structures such as the anterior commissure, corpus callosum, and hippocampal commissure. That interconnectedness favors bilateral involvement in various clinical contexts. This pictorial essay is based on a retrospective analysis of case files from a tertiary university hospital and aims to illustrate some of the conditions that simul...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Dental findings on face and neck imaging
Abstract When it is necessary to evaluate dental structures, the typical method is to obtain intraoral or panoramic X-rays at specialized dental clinics. However, in the daily practice of head and neck radiology, or even general radiology, it is common to encounter clinical situations or examination findings related to dental problems that should not be ignored. Because such problems can often be responsible for the clinical complaints of patients, this review aims to assist radiologists in identifying and describing common dental conditions on computed tomography of paranasal sinuses, face, and neck. It is important for r...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Spectral Doppler, tissue Doppler, and speckle-tracking echocardiography for the evaluation of fetal cardiac function: an update
Abstract The functional assessment of the fetal heart has been incorporated into cardiac ultrasound screening as a routine procedure, encompassing fetuses with and without structural heart diseases. It has long been known that various cardiac and extracardiac conditions, such as fetal growth restriction, fetal tumors, twin-to-twin transfusion syndrome, fetal anemia, diaphragmatic hernia, arteriovenous fistula with high cardiac output, and congenital heart diseases (valvular regurgitation and primary myocardial disease), can alter hemodynamic status and fetal cardiac function. Several ultrasound and Doppler echocardiographi...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Ultrasound measurement of thyroid volume in euthyroid children under 3 years of age
Conclusion: The mean thyroid dimensions were smallest in the< 2 month age group (0.35 ± 0.16 mL). For the subjects between 2 and 36 months of age, a reference value of 0.85 ± 0.42 mL can be used. Our data could guide the diagnostic investigation of thyroid disease, especially congenital hypothyroidism, in childhood.Resumo Objetivo: Estabelecer valores de refer ência ultrassonográficos de volumes tireoidianos em crianças de até três anos de idade, por ser exame essencial no diagnóstico de doença tireoidiana infantil. Materiais e Métodos: Trata-se de estudo prospectivo conduzido em cidade do sudeste brasileiro...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Radiomic analysis of lung cancer for the assessment of patient prognosis and intratumor heterogeneity
Conclusion: A radiomic signature based on the Fourier transform correlates with overall survival, representing a prognostic biomarker for risk stratification in patients with lung cancer.Resumo Objetivo: Associar caracter ísticas radiômicas de lesões pulmonares em imagens de tomografia computadorizada com a sobrevida global de pacientes com câncer de pulmão. Materiais e Métodos: Estudo retrospectivo composto por 101 pacientes consecutivos com neoplasia maligna confirmada por biópsia/cirurgia. As lesões foram semiautomaticamente segmentadas e caracterizadas por 2.465 variáveis radiômicas. A avaliação prognós...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Indications for breast magnetic resonance imaging at a referral center for the diagnosis and treatment of breast cancer in Brazil
Conclusion: Although there is strong evidence supporting the use of breast MRI, mainly for the screening of high-risk patients, the imaging method is underutilized in Brazil.Resumo Objetivo: Este estudo tem como objetivo descrever o perfil de indica ções de ressonância magnética (RM) das mamas em um hospital referência em câncer de mama. Materiais e Métodos: Estudo descritivo retrospectivo de solicitações médicas de exames e questionários de mulheres que realizaram RM das mamas em um centro de referência no diagnóstico e tratament o do câncer de mama no período de 2014 a 2018. Resultados: A indicação ma...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Intravenous contrast use and acute kidney injury: a retrospective study of 1,238 inpatients undergoing computed tomography
Conclusion: We identified no criteria for contrast-induced nephropathy after CT; nor did we find AKI to be associated with the classical risk factors.Resumo Objetivo: Determinar a incid ência de nefropatia induzida por contraste intravenoso em pacientes hospitalizados submetidos a tomografia computadorizada (TC). Materiais e Métodos: Estudo de coorte retrospectivo que alocou 1.238 pacientes submetidos a TC sem ou com contraste (iopromida). O desfecho primário foi nefropatia ind uzida por contraste, definida pelo critério antigo - aumento absoluto ou relativo na creatinina sérica (SCr) ≥ 0,5 mg/dL ou ≥ 25%, res...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Skeletal involvement in Gaucher disease: extent of bone disease, splenic volume, and quality of life
Conclusion: The linear relationship between the BMB score and the splenic volume indicates that the extent of bone disease is greater in individuals with splenomegaly. No correlation was found between the BMB and quality of life scores, illustrating the insidious and silent progression of Gaucher disease.Resumo Objetivo: Investigar a correla ção entre a extensão do envolvimento ósseo, o volume esplênico e a qualidade de vida em pacientes com doença de Gaucher. Materiais e Métodos: Estudo descritivo, prospectivo e transversal de 18 pacientes com doença de Gaucher submetidos a ressonância magnética de 3-T de ambo...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
The quest for reproducibility
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Diagnostic imaging in bronchial atresia
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research
Liver venous deprivation prior to hepatectomy: an interventional radiology procedure
The objective of this pictorial essay is to demonstrate what can be identified within inguinal hernias. Differentiating the types of herniated structures is of absolute importance for planning the appropriate treatment.Resumo Embora o diagn óstico correto possa ser muitas vezes realizado pelo exame clínico, há várias situações em que os métodos de imagem representam a melhor opção para avaliar hérnias inguinais, seu conteúdo e eventuais complicações. Além disso, os abaulamentos da região inguinal nem sempre são hérnias , pois outras lesões como tumores, cistos e hematomas também acometem este sítio. O o...
Source: Radiologia Brasileira - February 3, 2021 Category: Radiology Source Type: research
Contents of the inguinal canal: identification by different imaging methods
The objective of this pictorial essay is to demonstrate what can be identified within inguinal hernias. Differentiating the types of herniated structures is of absolute importance for planning the appropriate treatment.Resumo Embora o diagn óstico correto possa ser muitas vezes realizado pelo exame clínico, há várias situações em que os métodos de imagem representam a melhor opção para avaliar hérnias inguinais, seu conteúdo e eventuais complicações. Além disso, os abaulamentos da região inguinal nem sempre são hérnias , pois outras lesões como tumores, cistos e hematomas também acometem este sítio. O o...
Source: Radiologia Brasileira - February 3, 2021 Category: Radiology Source Type: research
