Unenhanced magnetic resonance angiography as an accurate alternative in the preoperative assessment of potential living kidney donors with contraindications to computed tomography angiography and to contrast-enhanced magnetic resonance angiography
Conclusion: Unenhanced MRA provides high quality imaging of the extrarenal segments of renal arteries. This method may be used as an alternative for the evaluation of the renal arteries, given that it has an accuracy comparable to that of CTA.Resumo Objetivo: Avaliar, prospectivamente, a acur ácia da angiografia por ressonância magnética (angio-RM) sem contraste, com a sequência steady-state free precession (SSFP) 1,5 T, para a identificação de artérias renais múltiplas, usando para isso a angiografia por tomografia computadorizada (angio-TC) como padrão de referência. Materia is e Métodos: Trinta e nove pacie...
Source: Radiologia Brasileira - August 15, 2020 Category: Radiology Source Type: research
Comparison between STIR and T2-weighted SPAIR sequences in the evaluation of inflammatory sacroiliitis: diagnostic performance and signal-to-noise ratio
Conclusion: Our results corroborate those in the recent literature suggesting that STIR sequences are not superior to T2 SPAIR sequences for SIJ evaluation in patients with suspected spondyloarthritis. On 1.5-T MRI, T2-weighted SPAIR sequences provide better SNRs than do STIR sequences, which reinforces that T2 SPAIR sequences may be an advantageous option for the evaluation of sacroiliitis.Resumo Objetivo: O objetivo deste estudo foi comparar a qualidade da imagem das t écnicas de saturação de gordura T2 SPAIR e STIR e, adicionalmente, comparar o desempenho diagnóstico das duas sequências para detecção de inflamaÃ...
Source: Radiologia Brasileira - August 15, 2020 Category: Radiology Source Type: research
Practical recommendations for the safe use of gadolinium in magnetic resonance imaging: a Delphi expert panel study
Conclusion: When choosing a GBCA, it is important to consider the characteristics of the gadolinium deposition in patient tissues and minimize potential risks. Furthermore, medical education programs are needed to increase the awareness of the potential risks of gadolinium deposition and thus avoid instances of overexposure to the contrast agent.Resumo Objetivo: Avaliar aspectos pr áticos do uso de agentes de contraste à base de gadolÃnio (gadolinium-based contrast agents - GBCAs) por médicos especialistas em radiologia. Materiais e Métodos: Dez radiologistas de diferentes regiões do Brasil foram convidados a parti...
Source: Radiologia Brasileira - August 15, 2020 Category: Radiology Source Type: research
Chest CT accuracy in the diagnosis of SARS-CoV-2 infection: initial experience in a cancer center
Conclusion: CT has a high accuracy for the diagnosis of SARS-CoV-2 infection. Different interpretation criteria can provide either high sensitivity or high specificity. CT should be integrated as a triage test in resource-constrained environments during the pandemic to assist in the optimization of PCR-tests, isolation beds and intensive care units.Resumo Objetivo: Avaliar a acur ácia da tomografia computadorizada (TC) de tórax em pacientes com suspeita de infecção por SARS-CoV-2 em um centro oncológico. Materiais e Métodos: Estudo retrospectivo e unicêntrico que selecionou 91 pacientes que realizaram TC de tórax...
Source: Radiologia Brasileira - August 15, 2020 Category: Radiology Source Type: research
Intracranial calcifications - the eternal companions
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - August 15, 2020 Category: Radiology Source Type: research
Imaging assessment of surgical repair of knee cartilage
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - August 15, 2020 Category: Radiology Source Type: research
COVID-19 and cancer patients
(Source: Radiologia Brasileira)
Source: Radiologia Brasileira - August 15, 2020 Category: Radiology Source Type: research
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 disponÃveis para sua avaliação, no intuito de otimizar o seguimento pós-operatório do paciente. O presente estudo tem por finalidade, por meio de uma coletânea de casos do nosso se...
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 ócrina...
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 Ãbrio 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 equilÃbrio sagital ganhou importância principalmente na última década, uma vez que o desequilÃbrio sagit al se correlaciona diretamente com incapacidade e dor. Doenças que alterem este equilÃbrio podem ...
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 tecnologias de IA, o quan...
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 tecnologias de IA, o quan...
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 tecnologias de IA, o quan...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research
Proportional vascularization along the fallopian tubes and ovarian fimbria: assessment by confocal microtomography
Conclusion: We believe that the vascularization in the fimbriae is greater than and disproportional that in the other segments of FT, and that the ovarian fimbria plays an important role in the development of that difference.Resumo Objetivo: Avaliar e reconstruir imagens tridimensionais da vasculariza ção ao longo da trompa de Falópio (TF) e sua relação com o ovário e fÃmbria do ovário, além de quantificar os vasos sanguÃneos ao longo da TF de acordo com seus segmentos anatômicos usando microtomografia confocal (micro-TC). Materiais e Métodos: Nove espécimes (seis com TFs e três co m TFs e ovários) foram f...
Source: Radiologia Brasileira - June 8, 2020 Category: Radiology Source Type: research
