Radiologia Brasileira最新文献

{"title":"Lymph node assessment in patients with early-stage breast cancer: the current role of imaging methods.","authors":"Sandra Regina Campos Teixeira, Almir Galvão Vieira Bitencourt","doi":"10.1590/0100-3984.2024.57.e11-en","DOIUrl":"10.1590/0100-3984.2024.57.e11-en","url":null,"abstract":"","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e11en"},"PeriodicalIF":0.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11616767/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142780749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vascular irregularities in COVID-19: the relevance of computed tomography pulmonary angiography in the diagnosis of vascular complications.","authors":"Alexandre Dias Mançano","doi":"10.1590/0100-3984.2024.57.e10-en","DOIUrl":"10.1590/0100-3984.2024.57.e10-en","url":null,"abstract":"","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e10en"},"PeriodicalIF":0.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11616768/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142780825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vascular irregularities in COVID-19: findings on computed tomography pulmonary angiography.","authors":"Luiz Felipe Nobre, Sérgio Ferreira Alves Júnior, Elazir Barbosa Di Puglia, Rosana Rodrigues, Gláucia Zanetti, Edson Marchiori","doi":"10.1590/0100-3984.2024.0054-en","DOIUrl":"10.1590/0100-3984.2024.0054-en","url":null,"abstract":"<p><strong>Objective: </strong>The purpose of this study was to evaluate the characteristics and meaning of the vessel wall irregularities sign, observed on computed tomography angiography of the pulmonary arteries of patients with coronavirus disease 2019 (COVID-19) pneumonia.</p><p><strong>Materials and methods: </strong>This retrospective study of the computed tomography pulmonary angiography findings of 65 patients diagnosed with COVID-19 included 27 women and 38 men, with a median age of 52 years (range, 20-86 years). The diagnosis of COVID-19 was established through reverse transcription-polymerase chain reaction for infection with severe acute respiratory syndrome coronavirus 2.</p><p><strong>Results: </strong>The vessel wall irregularities sign was observed in 50 (76.9%) of the 65 patients with COVID-19. Among those 50 patients, the vascular involvement was predominantly mixed (arterial and venous) in 43 (86%), subsegmental in all 50 (100%), segmental in 13 (26%), bilateral in 46 (92%), affecting 4-5 lobes in 35 (70%), mainly in the right lower lobe in 46 (92%), and mainly in the left lower lobe in 44 (88%).</p><p><strong>Conclusion: </strong>The vessel wall irregularities is a prevalent sign of vascular involvement in patients with COVID-19.</p>","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e20240054"},"PeriodicalIF":0.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11616031/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142780754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computed tomography-guided preoperative charcoal tattooing in patients with recurrent prostate cancer after prostatectomy and undergoing pelvic salvage lymphadenectomy.","authors":"Juan Bautista Del Valle, Sebastian Gustavo Tirapegui, Juan Cruz Liyo, Matías Adrián Borensztein","doi":"10.1590/0100-3984.2024.0038","DOIUrl":"10.1590/0100-3984.2024.0038","url":null,"abstract":"","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e20240038"},"PeriodicalIF":0.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11575846/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantification of hepatic fat: evaluation of different magnetic resonance imaging measurement strategies in cases of homogeneous and heterogeneous distribution.","authors":"Eloa de Castro Noguerol, Luis Ronan Marquez Ferreira de Souza, Valdair Francisco Muglia, Jorge Elias","doi":"10.1590/0100-3984.2024.0009-en","DOIUrl":"10.1590/0100-3984.2024.0009-en","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate three different measurements strategies to quantify hepatic steatosis and to investigate the differences between homogeneous and heterogeneous forms of hepatic steatosis.</p><p><strong>Materials and methods: </strong>Retrospective study conducted by magnetic resonance imaging review. We evaluated three different strategies measures for quantification of hepatic steatosis in two matched groups: homogeneous and heterogeneous steatosis. We considered <i>p</i> < 0.05 significance level in all made tests.</p><p><strong>Results: </strong>In heterogeneous steatosis group, the strategy with a region of interest (ROI) of 1 cm² to measure the signal intensity in the most altered area showed significant variations in the quantification, while the average of four ROIs of 1 cm² or representative target area in axial section did not vary significant. In diffuse hepatic steatosis, any strategy used showed no significant difference. The intraclass correlation coefficient ranged between 0.96 and 0.99, with 95% confidence interval of 0.93-0.99.</p><p><strong>Conclusion: </strong>The quantification of fat liver by magnetic resonance imaging using only one ROI is less representative, especially in heterogeneous steatosis. There was no significant difference between the average of four ROIs strategy and the strategy of representative segmentation area of parenchyma.</p>","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e20240009en"},"PeriodicalIF":0.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11575847/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding highand low-grade gliomas: VASARI criteria and MRI features.","authors":"Nina Ventura","doi":"10.1590/0100-3984.2024.57.e9","DOIUrl":"10.1590/0100-3984.2024.57.e9","url":null,"abstract":"","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e9"},"PeriodicalIF":0.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11618832/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142785318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computed tomography-guided percutaneous biopsy of subcentimeter lung noduless.","authors":"Penélope Sánchez Teixeira, Almir Galvão Vieira Bitencourt, Jefferson Luiz Gross, Rubens Chojniak, Soraia Quaranta Damião, Paula Nicole Vieira Pinto Barbosa","doi":"10.1590/0100-3984.2024.0046-en","DOIUrl":"10.1590/0100-3984.2024.0046-en","url":null,"abstract":"<p><strong>Objective: </strong>To assess the diagnostic success rate and complications of computed tomography (CT)-guided percutaneous biopsy in pulmonary nodules < 10 mm in diameter.</p><p><strong>Materials and methods: </strong>This was a retrospective, single-center study involving the review of medical records, images, and chest CT reports related to 115 patients who underwent percutaneous CT-guided biopsy of < 10 mm pulmonary nodules between July 2015 and January 2019.</p><p><strong>Results: </strong>Nodule diameter on the longest axis ranged from 4 mm to 9 mm, with a mean size of 7.7 mm. The mean age of the patients at the time of the procedure was 61 years, and 54.7% were women. Of the 115 nodules evaluated, 77 (67.0%) were solid and 55 (47.8%) were located in the lower lobes. The mean distance traversed by the needle in the lung parenchyma was 20 mm (range, 0-70 mm), and, in most cases, the biopsy was not performed with the patient in the biopsy-side-down lateral position. The diagnostic success rate was 93.0%. The most common complications were alveolar hemorrhage (in 36.5% of cases) and pneumothorax (in 24.3%).</p><p><strong>Conclusion: </strong>The data suggest that CT-guided percutaneous biopsy of < 10 mm pulmonary nodules has a high diagnostic success rate and an acceptable rate of complications.</p>","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e20240046"},"PeriodicalIF":0.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11618831/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142787035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nutritional status and changes in muscle and adipose tissue determined by computed tomography as predictors of mortality in hospitalized patients.","authors":"Bruna Lúcia de Mendonça Soares, Nataly Maria de Mendonça Soares, Maria Goretti Pessoa de Araújo Burgos, Ilma Kruze Grande de Arruda","doi":"10.1590/0100-3984.2024.0026","DOIUrl":"10.1590/0100-3984.2024.0026","url":null,"abstract":"<p><p>The aim of the present study was to investigate whether nutritional status and changes in muscle and adipose tissue determined by computed tomography are predictors of mortality in hospitalized patients. This was a prospective cohort study involving patients ≥ 20 years of age hospitalized in a public hospital. Sociodemographic and clinical variables were collected from electronic medical records. Nutritional variables were determined. All patients were followed prospectively until the hospital outcome, which could be discharge or death. Body composition was defined from computed tomography images, with the identification of myopenia, myosteatosis, and myopenic obesity. The sample comprised 542 patients. The mortality rate was 10.7% (95% CI: 6.4-15.0%). The independent predictors of mortality were malnutrition, assessed with the subjective global assessment (hazard ratio: 4.18; 95% CI: 1.01-17.22; <i>p</i> = 0.047), and myopenic obesity (hazard ratio: 2.82; 95% CI: 1.11-7.20; <i>p</i> = 0.029). The findings of the present study add to the limited evidence in the literature that body composition is associated with outcomes in hospitalized patients.</p>","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e20240026"},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11559939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142627076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brain MRI in infants exposed to the Zika virus, with one-year follow-up: expanding the phenotype.","authors":"Teresa Cristina de Castro Ramos Sarmet Dos Santos, Mai-Lan Ho, Maria de Fatima Vasco Aragão, Renata Artimos de Oliveira Vianna, Alexandre Ribeiro Fernandes, Alair Augusto Sarmet Moreira Damas Dos Santos, Claudete Aparecida Araújo Cardoso","doi":"10.1590/0100-3984.2024.0014","DOIUrl":"10.1590/0100-3984.2024.0014","url":null,"abstract":"<p><strong>Objective: </strong>To analyze longitudinal changes between two brain magnetic resonance imaging (MRI) exams performed one year apart in symptomatic infants with congenital Zika syndrome (CZS) and normocephalic infants exposed to the Zika virus (ZIKV) prenatally.</p><p><strong>Materials and methods: </strong>This was a prospective observational study. Infants born to women who tested positive for ZIKV on reverse transcription-quantitative polymerase chain reaction during pregnancy were classified into two groups: symptomatic infants with CZS and asymptomatic infants. All of the infants underwent brain MRI at presentation and after one year of follow-up. All MRI scans were evaluated independently by a pediatric radiologist and a pediatric neuroradiologist, and the infants underwent clinical monitoring by a pediatric neurologist.</p><p><strong>Results: </strong>The sample included 36 infants exposed to ZIKV perinatally. Therefore, a total of 72 MRI scans were evaluated. Among the 36 infants included a diagnosis of CZS was made in 25 (69.4%), of whom 18 presented with a combination of classic findings (including reduced brain volume, subcortical calcifications, brainstem hypoplasia, malformations of the corpus callosum, malformations of cortical development, and ventriculomegaly), as well as atypical findings such as hyperintense foci in the white matter on T2-weighted sequences. Of those same 25 infants, seven presented with mild lesions. Of the 11 normocephalic patients, five (13.9%) had atypical findings such as hyperintense foci in the white matter on T2-weighted sequences and no other manifestations of CZS, although there was mild neurological involvement. Six (16.6%) of the 36 patients had completely normal MRI scans with no neurological changes. No disease progression was observed during follow-up.</p><p><strong>Conclusion: </strong>In infants exposed to ZIKV perinatally, the frequency of classic and atypical findings on brain MRI seems to be associated with the neurological status. Brain MRI is an important diagnostic tool in the evaluation and monitoring of patients with congenital infection, because intracranial changes other than microcephaly can occur.</p>","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e20240014"},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11559958/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142627075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experience in other segments should shorten studies using Look-Locker and high-resolution T2 images in the study of focal lung lesions.","authors":"Marcelo Souto Nacif","doi":"10.1590/0100-3984.2024.57.e8-en","DOIUrl":"https://doi.org/10.1590/0100-3984.2024.57.e8-en","url":null,"abstract":"","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e8"},"PeriodicalIF":0.0,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11494724/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}