Radiologia Brasileira最新文献_第9页

Magnetic resonance imaging of the urethra. 尿道磁共振成像。

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.0084

Gustavo Fiedler, Leonardo Kayat Bittencourt, Christopher Zhou, André Guilherme Cavalcanti, Suzan Menasce Goldman

引用次数: 0

Computed tomography: an efficient, opportunistic method for assessing body composition and predicting adverse outcomes in cancer patients. 计算机断层扫描：评估癌症患者身体成分和预测不良预后的高效、适时方法。

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.56.6e3-en

Adriano de Araújo Lima Liguori, Ana Paula Trussardi Fayh

引用次数: 0

Exploring the relationship between patellofemoral instability and bone morphology: discoveries and challenges. 探索髌骨股骨不稳定性与骨骼形态之间的关系：发现与挑战。

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.56.6e4-en

André Yui Aihara

引用次数: 0

Prognostic role of magnetic resonance imaging of the abdomen with intravenous contrast and magnetic resonance cholangiopancreatography in primary sclerosing cholangitis. 静脉注射造影剂的腹部磁共振成像和磁共振胰胆管造影在原发性硬化性胆管炎中的预后作用。

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.0041

Roy López Grove, Florência Vespa, Martina Aineseder, Alejandra Villamil, Juan Carlos Spina

{"title":"Prognostic role of magnetic resonance imaging of the abdomen with intravenous contrast and magnetic resonance cholangiopancreatography in primary sclerosing cholangitis.","authors":"Roy López Grove, Florência Vespa, Martina Aineseder, Alejandra Villamil, Juan Carlos Spina","doi":"10.1590/0100-3984.2023.0041","DOIUrl":"https://doi.org/10.1590/0100-3984.2023.0041","url":null,"abstract":"Objective: To evaluate the usefulness of Anali scores, determined by magnetic resonance imaging, for predicting the prognosis of primary sclerosing cholangitis (PSC) and to analyze interobserver variability, as well as to assess the impact of periportal edema and heterogeneous signal intensity on diffusion-weighted imaging of the liver.Materials and methods: This was a retrospective cohort study of 29 patients with PSC and baseline magnetic resonance imaging. Anali scores, without gadolinium (0-5 points) and with gadolinium (0-2 points), were calculated by two radiologists. Clinical end-points included liver transplantation, cirrhotic decompensation, and death. We calculated intraclass correlation coefficients (ICCs) for interobserver agreement on the Anali scores, performed Kaplan-Meier survival analysis comparing event-free survival among the score strata, and calculated the areas under receiver operating characteristic curves to determine sensitivity and specificity.Results: Among the patients with a clinical event, the median Anali score was 4 (interquartile range [IQR], 2-5) without gadolinium and 2 (IQR, 1-2) with gadolinium, compared with 1 (IQR, 1.0-2.5) and 1 (IQR, 0.25-1.0), respectively, among those without a clinical event. The ICC was 0.79 (95% confidence interval: 0.57-0.91) for the Anali score with gadolinium and 0.99 (95% confidence interval: 0.98-0.99) for the Anali score without gadolinium. Periportal edema and heterogeneous signal intensity in the liver on diffusion-weighted imaging showed no statistical impact on clinical events (p = 0.65 and p = 0.5, respectively).Conclusion: Anali scores correlate with clinical events in PSC, with a high level of interobserver agreement.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"56 6","pages":"301-307"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10948161/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140176143","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}

引用次数: 0

Are we ready to stratify BI-RADS 4 MRI lesions? 我们准备好对 BI-RADS 4 MRI 病灶进行分层了吗？

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.56.6e1

Tatiane Mendes Gonçalves de Oliveira

引用次数: 0

Magnetic resonance imaging findings in autoimmune hepatitis: how frequent and reproducible are they? 自身免疫性肝炎的磁共振成像结果：其频率和可重复性如何？

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.0044

Natália Borges Nunes Gomes, Ulysses S Torres, Gabriella Souza E Silva, Perla Oliveira Schulz Mamone, Maria Lucia Cardoso Gomes Ferraz, Giuseppe D'ippolito

{"title":"Magnetic resonance imaging findings in autoimmune hepatitis: how frequent and reproducible are they?","authors":"Natália Borges Nunes Gomes, Ulysses S Torres, Gabriella Souza E Silva, Perla Oliveira Schulz Mamone, Maria Lucia Cardoso Gomes Ferraz, Giuseppe D'ippolito","doi":"10.1590/0100-3984.2023.0044","DOIUrl":"https://doi.org/10.1590/0100-3984.2023.0044","url":null,"abstract":"Objective: To determine the frequency and interobserver reproducibility of the magnetic resonance imaging (MRI) features considered diagnostic for autoimmune hepatitis.Materials and methods: Two abdominal radiologists, blinded to pathology data, reviewed the MRI examinations of 20 patients with autoimmune hepatitis, looking for liver enhancement, lymphadenopathy, portal hypertension, and chronic liver disease. The pattern of liver fibrosis was categorized as reticular, confluent, or mixed. Interobserver agreement was assessed by calculating intraclass correlation coefficients and kappa statistics.Results: The most common abnormal finding on MRI was surface nodularity (in 85%), followed by liver fibrosis with a reticular pattern (in 80%)-categorized as mild (in 25.0%), moderate (in 43.8%), or severe (in 31.2%)-; heterogeneous liver enhancement (in 65%); splenomegaly (in 60%); caudate lobe enlargement (in 50%); and lymphadenopathy (in 40%). The interobserver agreement was almost perfect for surface nodularity (0.83), ascites (0.89), and liver volume (0.95), whereas it was just slight and fair for the degree of fibrosis and for heterogeneous liver enhancement (0.12 and 0.25, respectively). It was also slight and fair for expanded gallbladder fossa and enlarged preportal space (0.14 and 0.36, respectively), both of which are indicative of chronic liver disease.Conclusion: The interobserver agreement was satisfactory for surface nodularity (the most prevalent abnormal MRI finding), ascites, liver volume, and splenomegaly. Conversely, it was only slight or fair for common but less objective criteria.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"56 6","pages":"308-316"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10948163/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140176168","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}

引用次数: 0

Impact of preoperative body composition in patients with renal cell carcinoma submitted to surgical treatment. 接受手术治疗的肾细胞癌患者术前身体成分的影响。

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.0053

Letícia Nascimento Carniatto, Almir Galvão Vieira Bitencourt, Thais Manfrinato Miola, Jéssica Agnello, Camila Machado Xavier, Walter Henriques da Costa

{"title":"Impact of preoperative body composition in patients with renal cell carcinoma submitted to surgical treatment.","authors":"Letícia Nascimento Carniatto, Almir Galvão Vieira Bitencourt, Thais Manfrinato Miola, Jéssica Agnello, Camila Machado Xavier, Walter Henriques da Costa","doi":"10.1590/0100-3984.2023.0053","DOIUrl":"https://doi.org/10.1590/0100-3984.2023.0053","url":null,"abstract":"Objective: To evaluate the impact of preoperative body composition in patients with renal cell carcinoma (RCC) undergoing surgical treatment.Materials and methods: This was a retrospective study of 52 patients with RCC undergoing total or partial nephrectomy. Body composition assessment was performed using the body mass index, together with computed tomography analysis at the level of the third lumbar vertebra to measure the area of visceral adipose tissue, as well as the area and density of skeletal muscle mass.Results: Malnutrition, obesity and inadequate skeletal muscle gauge (SMG) were associated with higher hospital length of stay (p = 0.028, p = 0.02 and p = 0.012, respectively). Although the rates of postoperative symptoms and readmissions were low, survival was better among the patients with an adequate SMG than among those with an inadequate SMG (p = 0.003).Conclusion: Among patients with RCC undergoing surgical treatment, preoperative body composition does not seem to be associated with the rates of perioperative complications, although an inadequate SMG seems to be associated with worse overall survival.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"56 6","pages":"317-320"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10948162/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140176166","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}

引用次数: 0

Are we ready to stratify BI-RADS 4 lesions observed on magnetic resonance imaging? A real-world noninferiority/equivalence analysis. 我们准备好对磁共振成像观察到的 BI-RADS 4 病变进行分层了吗？真实世界非劣效性/等效性分析。

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.0087

João Ricardo Maltez de Almeida, Almir Galvão Vieira Bitencourt, André Boechat Gomes, Gabriela Lemos Chagas, Thomas Pitangueira Barros

{"title":"Are we ready to stratify BI-RADS 4 lesions observed on magnetic resonance imaging? A real-world noninferiority/equivalence analysis.","authors":"João Ricardo Maltez de Almeida, Almir Galvão Vieira Bitencourt, André Boechat Gomes, Gabriela Lemos Chagas, Thomas Pitangueira Barros","doi":"10.1590/0100-3984.2023.0087","DOIUrl":"https://doi.org/10.1590/0100-3984.2023.0087","url":null,"abstract":"Objective: To demonstrate that positive predictive values (PPVs) for suspicious (category 4) magnetic resonance imaging (MRI) findings that have been stratified are equivalent to those stipulated in the American College of Radiology Breast Imaging Reporting and Data System (BI-RADS) for mammography and ultrasound.Materials and methods: This retrospective analysis of electronic medical records generated between January 4, 2016 and December 29, 2021 provided 365 patients in which 419 suspicious (BI-RADS category 4) findings were subcategorized as BI-RADS 4A, 4B or 4C. Malignant and nonmalignant outcomes were determined by pathologic analyses, follow-up, or both. For each subcategory, the level 2 PPV (PPV2) was calculated and tested for equivalence/noninferiority against the established benchmarks.Results: Of the 419 findings evaluated, 168 (40.1%) were categorized as malignant and 251 (59.9%) were categorized as nonmalignant. The PPV2 for subcategory 4A was 14.2% (95% CI: 9.3-20.4%), whereas it was 41.2% (95% CI: 32.8-49.9%) for subcategory 4B and 77.2% (95% CI: 68.4-84.5%) for subcategory 4C. Multivariate analysis showed a significantly different cancer yield for each subcategory (p < 0.001).Conclusion: We found that stratification of suspicious findings by MRI criteria is feasible, and malignancy probabilities for sub-categories 4B and 4C are equivalent to the values established for the other imaging methods in the BI-RADS. Nevertheless, low suspicion (4A) findings might show slightly higher malignancy rates.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"56 6","pages":"291-300"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10948154/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140176162","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}

引用次数: 0

Lumbar safety triangle: comparative study of coronal and coronal oblique planes in 3.0-T magnetic resonance imaging. 腰椎安全三角区：3.0T 磁共振成像中冠状面和冠状斜面的比较研究。

Radiologia Brasileira Pub Date : 2023-11-01 DOI: 10.1590/0100-3984.2023.0022

Fernando Augusto Dannebrock, Erasmo de Abreu Zardo, Marcus Sofia Ziegler, Emiliano Vialle, Ricardo Bernardi Soder, Carla Helena Augustin Schwanke

{"title":"Lumbar safety triangle: comparative study of coronal and coronal oblique planes in 3.0-T magnetic resonance imaging.","authors":"Fernando Augusto Dannebrock, Erasmo de Abreu Zardo, Marcus Sofia Ziegler, Emiliano Vialle, Ricardo Bernardi Soder, Carla Helena Augustin Schwanke","doi":"10.1590/0100-3984.2023.0022","DOIUrl":"https://doi.org/10.1590/0100-3984.2023.0022","url":null,"abstract":"Objective: To compare the measurements of the lumbar safety triangle (Kambin's triangle) and the invasion of the dorsal root ganglion in the triangle in coronal and coronal oblique planes.Materials and methods: A cross-sectional study, in which 210 3.0-T magnetic resonance images of L2-L5 were analyzed in coronal and coronal oblique planes. Exams with lumbar spine anomalies were excluded. Demographic (sex and age) and radiological variables were recorded by a single evaluator.Results: Most sample was female (57.1%), mean age 45.5 ± 13.3 (18-98 years). The measurements average, as well as the areas, gradually increased from L2 to L5. The dorsal root ganglion invaded the triangle in all images. The safety triangle average area was smaller in the coronal oblique plane than in the coronal plane. Of the seven dimensions of safety triangle obtained for each level of the lumbar spine, six were significantly smaller in the coronal oblique plane than in the coronal plane. The only dimension that showed no difference was the smallest ganglion dimension.Conclusion: The dimensions and areas investigated were smaller in coronal oblique plane, especially the area (difference > 1 mm). The analysis of the triangular zone in this plane becomes important in the preoperative assessment of minimally invasive procedures.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"56 6","pages":"327-335"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10948153/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140176167","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}

引用次数: 0

A valuable tool for the treatment of hepatocellular carcinoma 治疗肝细胞癌的重要工具

Radiologia Brasileira Pub Date : 2023-09-01 DOI: 10.1590/0100-3984.2023.56.5e2

T. J. Penachim

引用次数: 0