Radiologia Brasileira最新文献

Ultrasound findings for the diagnosis of biliary atresia in neonates. 超声检查对新生儿胆道闭锁的诊断价值。

Radiologia Brasileira Pub Date : 2025-04-25 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0102

Elazir Barbosa Mota Di Puglia, Pedro Augusto Nascimento Daltro, Heron Werner Junior, Miriam Menna Barreto, Flávia Angélica Ferreira Francisco, Sérgio Ferreira Alves Junior, Ivonete Siviero, Claudia Renata S Paio Rezende, Edson Marchiori

{"title":"Ultrasound findings for the diagnosis of biliary atresia in neonates.","authors":"Elazir Barbosa Mota Di Puglia, Pedro Augusto Nascimento Daltro, Heron Werner Junior, Miriam Menna Barreto, Flávia Angélica Ferreira Francisco, Sérgio Ferreira Alves Junior, Ivonete Siviero, Claudia Renata S Paio Rezende, Edson Marchiori","doi":"10.1590/0100-3984.2024.0102","DOIUrl":"https://doi.org/10.1590/0100-3984.2024.0102","url":null,"abstract":"Objective: To investigate and identify the main abdominal ultrasound findings in patients with biliary atresia (BA).Materials and methods: This was a retrospective study of the ultrasound images of 44 patients with neonatal cholestasis. We excluded 18 patients in whom a final diagnosis of BA was not confirmed or who were lost to clinical follow-up. The main ultrasound findings evaluated were gallbladder length and morphology; triangular cord thickness; hepatic artery enlargement; hepatic subcapsular flow; cysts in the porta hepatis; presence of a distinct triangular cord with linear, tubular, or round hypoechoic portions; and polysplenia syndrome.Results: Abnormal gallbladder morphology and triangular cord thickening were the main ultrasound findings in the patients with BA. Gallbladder abnormalities were present in all patients. Hepatic artery enlargement was the third most common finding, present in 19 (73%) patients. Six patients (23%) had subcapsular arterial flow and four (15%) had cysts in the porta hepatis. Hypoechoic or cystic portions of the triangular cord were present in three patients (11%), and we found that BA was accompanied by polysplenia syndrome in three patients (11%).Conclusion: Ultrasound is the examination of greatest diagnostic relevance in the investigation of cholestasis in newborns and infants; it enables the establishment of BA suspicion and the indication for laparotomy with intraoperative cholangiography.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"58 ","pages":"e20240102"},"PeriodicalIF":0.0,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12076785/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144079910","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

Hepatic cysts: a survival guide. 肝囊肿：生存指南。

Radiologia Brasileira Pub Date : 2025-04-25 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0101-en

Matheus Menezes Gomes, Gabriella Aquino Gouveia Cagliari, Eduardo Oliveira Pacheco, Ulysses Santos Torres, Giuseppe D'Ippolito

引用次数: 0

Prevalence of incidentally detected pancreatic cysts on magnetic resonance imaging in an adult population in Latin America. 磁共振成像在拉丁美洲成年人群中偶然发现胰腺囊肿的患病率。

Radiologia Brasileira Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0103

Fernando Revoredo Rego, Yuri López Zenteno, Fritz Kometter Barrios

{"title":"Prevalence of incidentally detected pancreatic cysts on magnetic resonance imaging in an adult population in Latin America.","authors":"Fernando Revoredo Rego, Yuri López Zenteno, Fritz Kometter Barrios","doi":"10.1590/0100-3984.2024.0103","DOIUrl":"https://doi.org/10.1590/0100-3984.2024.0103","url":null,"abstract":"Objective: To determine the prevalence of incidentally detected pancreatic cystic lesions (PCLs) in adult patients undergoing magnetic resonance imaging (MRI).Materials and methods: We included radiological records of consecutive adult patients who underwent MRI at our institution during a one-year period (January to December of 2023). We collected clinical and radiological data, including the presence or absence of cysts in the liver and kidneys.Results: A total of 1,211 MRI records were included. We identified PCLs in 138 patients, corresponding to a prevalence of 11.4%. That prevalence was 9.51% in men and 12.52% in women (p = 0.112). The patients with incidental PCLs (64.57 ± 13.15) were significantly older than were those without (mean age, 64.57 ± 13.15 years vs. 51.01 ± 15.27 years; p < 0.001). Of the 138 patients with PCLs, 53 (38.41%) had at least one liver cyst and 83 (60.14%) had at least one kidney cyst. In 69 patients (50.0%), the radiological diagnosis of the incidental cysts was intraductal papillary mucinous neoplasm. In the univariate analysis, the presence of PCLs was associated with age, liver cysts, and kidney cysts, although it was associated with only age and kidney cysts in the multivariate analysis.Conclusion: In our study sample, the prevalence of incidentally detected PCLs was 11.4%. That prevalence increased significantly with age but did not differ by sex.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"58 ","pages":"e20240103"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12013487/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144042734","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

Diagnostic accuracy of diffusion-weighted magnetic resonance imaging for cervical lymph node metastasis from oral cancer. 扩散加权磁共振成像对口腔癌颈部淋巴结转移的诊断准确性。

Radiologia Brasileira Pub Date : 2025-04-11 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0064

Suneela Shaukat, Ali Mansoor, Nawaz Rashid, Zara Shaukat, Umar Amin, Sobia Mazhar

{"title":"Diagnostic accuracy of diffusion-weighted magnetic resonance imaging for cervical lymph node metastasis from oral cancer.","authors":"Suneela Shaukat, Ali Mansoor, Nawaz Rashid, Zara Shaukat, Umar Amin, Sobia Mazhar","doi":"10.1590/0100-3984.2024.0064","DOIUrl":"https://doi.org/10.1590/0100-3984.2024.0064","url":null,"abstract":"Objective: To determine the accuracy of diffusion-weighted imaging (DWI) for the diagnosis of cervical lymph node metastasis from oral cancer.Materials and methods: This was a cross-sectional study conducted in the Radiology Department of the Mayo Hospital, in the city of Lahore, Pakistan. We included 150 patients diagnosed with oral cancer. Ages ranged from 18 to 60 years of age. During the study period, all of the patients included underwent magnetic resonance imaging, including a DWI sequence, in a 1.5-T scanner with a phased-array head and neck coil. Patients with contraindications to magnetic resonance (aneurysm, a pacemaker, clips, plates, a prosthetic valve, or claustrophobia) were excluded. In the DWI sequence, the area scanned included the lymph nodes from suprasternal notch to the base of the skull. Histopathology of the lymph nodes was employed as the gold standard.Results: The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of DWI for the diagnosis of oral cancer metastasis to cervical lymph nodes, with histopathology as the gold standard, was 90.57%, 91.75%, 94.68%, 90.57%, and 91.33%, respectively.Conclusion: Our findings indicate that DWI is fairly accurate for detecting metastases in the cervical lymph nodes of patients with oral cancer.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"58 ","pages":"e20240064"},"PeriodicalIF":0.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12005712/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144021035","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

Image quality in diagnostic radiology: a guide to methodologies for radiologists. 诊断放射学中的图像质量：放射学家方法论指南。

Radiologia Brasileira Pub Date : 2025-04-11 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0088-en

Andréa de Lima Bastos, Maria do Socorro Nogueira

{"title":"Image quality in diagnostic radiology: a guide to methodologies for radiologists.","authors":"Andréa de Lima Bastos, Maria do Socorro Nogueira","doi":"10.1590/0100-3984.2024.0088-en","DOIUrl":"https://doi.org/10.1590/0100-3984.2024.0088-en","url":null,"abstract":"The aim of this article is to provide a comprehensive guide to image quality assessment in diagnostic radiology, emphasizing practical methodologies for radiologists. The goal is to improve diagnostic accuracy and patient care on the basis of the understanding and application of quantitative and qualitative metrics in clinical practice and research. We conducted a review of the literature in the PubMed, Scopus, Web of Science, and Embase databases. The search terms included \"image quality in radiology\", \"quantitative and qualitative assessment\", \"modulation transfer function\", \"signal-to-noise ratio\", \"contrast-to-noise ratio\", \"radiation dose optimization\", and \"artificial intelligence in image quality assessment\". The review identified the main methodologies for image quality assessment. We analyzed these metrics for their applicability in clinical settings, highlighting their benefits and limitations. In addition, we discuss qualitative methods such as visual assessment, the assessment of contrast/density, and peer review. This guide fills a gap in the literature by providing accessible, practical knowledge for general radiologists. Ongoing research, education, and technological development are essential to advance the field and ensure high standards in radiology practice.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"58 ","pages":"e20240088"},"PeriodicalIF":0.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12013331/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144045752","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

Transperineal ultrasound beyond prostate biopsy: pictorial essay. 经会阴超声超越前列腺活检：图片文章。

Radiologia Brasileira Pub Date : 2025-03-11 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0071-en

Gabriel Franchi De Santi, Bernardo Oliveira Pacheco, Guilherme Cayres Mariotti, Denis Szejnfeld, Thiago Franchi Nunes

引用次数: 0

Effectiveness of shear wave elastography for assessing major salivary gland involvement in ankylosing spondylitis. 横波弹性成像评估强直性脊柱炎主要唾液腺受累的有效性。

Radiologia Brasileira Pub Date : 2025-03-11 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0121

Irfan Atik, Seda Atik, Enes Gul

{"title":"Effectiveness of shear wave elastography for assessing major salivary gland involvement in ankylosing spondylitis.","authors":"Irfan Atik, Seda Atik, Enes Gul","doi":"10.1590/0100-3984.2024.0121","DOIUrl":"https://doi.org/10.1590/0100-3984.2024.0121","url":null,"abstract":"Objective: To use shear wave elastography (SWE) in the evaluation of salivary glands in patients with ankylosing spondylitis (AS) who present with sicca symptoms.Materials and methods: This was a prospective controlled study of patients diagnosed with AS and exhibiting sicca symptoms (study group) and of healthy volunteers (control group). The levels of antinuclear, anti-Ro, and anti-La antibodies were determined in blood samples. In both groups, parotid and submandibular glands were evaluated by ultrasound and tissue stiffness was determined by SWE. Intraclass correlation coefficients were used in order to assess reliability. The differences between the two groups were assessed by statistical methods, and a ROC curve analysis was performed to determine the predictive values.Results: A total of 66 patients with AS and 71 healthy volunteers were included in the study. There were no significant differences between the groups in terms of age or sex (p > 0.05). The intraand inter-rater reliability of SWE were good for the parotid gland (0.81-0.85 and 0.80, respectively) and for the submandibular gland (0.85-0.88 and 0.80, respectively). Statistically significant differences were found. Tissue stiffness in the parotid and submandibular glands, as determined by SWE, was significantly greater in the study group than in the control group (p < 0.05).Conclusion: Although there was no histopathological correlation in the parotid and submandibular salivary glands of patients with AS and sicca symptoms compared with the healthy volunteers, quantitative measurements showed greater tissue stiffness in the former group. In patients with AS, SWE guides salivary gland biopsy, which is the gold standard for diagnosing Sjögren's syndrome.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"58 ","pages":"e20240121"},"PeriodicalIF":0.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11908682/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143650025","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

Assessment of unrecognized myocardial infarction using cardiac magnetic resonance imaging in patients with endstage renal disease. 终末期肾病患者心脏磁共振成像对未识别心肌梗死的评估。

Radiologia Brasileira Pub Date : 2025-02-27 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0090

Ihsan Yuce, Mustafa Keles, Mecit Kantarci

{"title":"Assessment of unrecognized myocardial infarction using cardiac magnetic resonance imaging in patients with endstage renal disease.","authors":"Ihsan Yuce, Mustafa Keles, Mecit Kantarci","doi":"10.1590/0100-3984.2024.0090","DOIUrl":"10.1590/0100-3984.2024.0090","url":null,"abstract":"Objective: To assess the frequency of unrecognized myocardial infarction and identify additional ischemic conditions, as well as to evaluate the efficacy of cardiac magnetic resonance imaging (CMRI) in risk groups, comparing the imaging findings with electro-cardiographic (ECG) and laboratory data in patients with stage 5 chronic kidney disease, also known as end-stage renal disease.Materials and methods: This was a prospective single-center study involving 20 patients who were referred to our radiology department to undergo CMRI between June 2010 and December 2011. Resting left ventricular functions and (early and late) myocardial contrast enhancement were assessed in all patients. Laboratory tests and ECG were conducted on all individuals. The mean duration of clinical follow-up was 18 á 4 months.Results: Pathological results were seen in six (30%) of the patients in our study sample. Scar tissue was identified as a high-risk factor in three patients (15%), and myocardial hibernation was shown to pose a moderate risk in three patients (15%). In the remaining 14 cases, no pathology was identified, and the risk was therefore categorized as low. A statistically significant disparity in mortality rates was observed between the high- and low-risk groups (p < 0.05). There were no statistically significant differences between the two groups in terms of the ECG and cardiac biomarkers.Conclusion: Our findings indicate that CMRI is effective in accurately categorizing risk groups and detecting ischemic conditions, even when such events are not evident on ECG or laboratory tests.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"58 ","pages":"e20240090"},"PeriodicalIF":0.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11902520/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143617107","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

Ring-like late gadolinium enhancement: differential diagnosis and mimics. 环形晚期钆增强：鉴别诊断和模拟。

Radiologia Brasileira Pub Date : 2025-02-27 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0111

André Vaz, Kevin Rafael De Paula Morales, Eduardo Kaiser Ururahy Nunes Fonseca, Juliana Pato Serra Souza, Maria Júlia Silveira Rahal, Ludmila Mintzu Young, Leticia Muniz Pereira, Luiz Raphael Pereira Donoso Scoppetta, José Rodrigues Parga Filho

{"title":"Ring-like late gadolinium enhancement: differential diagnosis and mimics.","authors":"André Vaz, Kevin Rafael De Paula Morales, Eduardo Kaiser Ururahy Nunes Fonseca, Juliana Pato Serra Souza, Maria Júlia Silveira Rahal, Ludmila Mintzu Young, Leticia Muniz Pereira, Luiz Raphael Pereira Donoso Scoppetta, José Rodrigues Parga Filho","doi":"10.1590/0100-3984.2024.0111","DOIUrl":"10.1590/0100-3984.2024.0111","url":null,"abstract":"Advances in cardiac magnetic resonance have promoted tissue characterization with high spatial and contrast resolution, and late gadolinium enhancement (LGE) sequences have improved the detection of myocardial fibrosis. The distribution pattern of LGE facilitates differentiation between ischemic and nonischemic etiologies and aids in refining diagnoses within nonischemic cardiomyopathies, suggesting specific etiological factors. A distinctive nonischemic LGE pattern that has recently gained prominence is the ring-like pattern, defined as a subepicardial or mid-wall circumferential or semi-circumferential enhancement, which involves at least three contiguous segments within the same short-axis slice. Initially identified as a diagnostic marker for desmoplakin and filamin C-related cardiomyopathies, the pattern has been reported in nongenetic conditions; nevertheless, it remains an uncommon finding in these diseases. In this article, we aim to present the differential diagnoses of ring-like LGE and its mimics. The combination of epidemiological, clinical, electrocardiographic, and additional features enables a focused refinement of the differential diagnosis associated with ring-like LGE.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"58 ","pages":"e20240111"},"PeriodicalIF":0.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11905226/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143625717","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

Improving osteoarticular characterization in magnetic resonance imaging: the role of simulated computed tomography sequences. 改善骨关节特征在磁共振成像：模拟计算机断层扫描序列的作用。

Radiologia Brasileira Pub Date : 2025-02-24 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0048-en

Gabriel Brito-Barbosa, Felipe Bortoloni Pires Correa, Leonor Garbin Savarese, Mateus Andrade Hernandes, Paulo Moraes Agnollitto, Marcelo Novelino Simão, Marcello Henrique Nogueira-Barbosa

{"title":"Improving osteoarticular characterization in magnetic resonance imaging: the role of simulated computed tomography sequences.","authors":"Gabriel Brito-Barbosa, Felipe Bortoloni Pires Correa, Leonor Garbin Savarese, Mateus Andrade Hernandes, Paulo Moraes Agnollitto, Marcelo Novelino Simão, Marcello Henrique Nogueira-Barbosa","doi":"10.1590/0100-3984.2024.0048-en","DOIUrl":"10.1590/0100-3984.2024.0048-en","url":null,"abstract":"Increasing tissue contrast for bone assessment on magnetic resonance imaging has been the aim of several recent studies, and various techniques have been proposed for that purpose, including ultrashort echo time sequences, zero echo time sequences, and gradient echo sequences in various acquisition forms. In this article, we discuss the fast field echo resembling a computed tomography using restricted echo-spacing (FRACTURE) sequence, which we have started to use routinely in our practice. The FRACTURE sequences are based on the acquisition of gradient echo sequences with different echo times and specific postprocessing. Gradient echo sequences are widely available on magnetic resonance imaging scanners, which is an advantage for the use of a FRACTURE sequence. However, being more susceptible to metal artifacts, a FRACTURE sequence is of limited utility in patients with metallic implants or medical devices. The aim of this article is to illustrate the use of FRACTURE sequences in various contexts, including osteoarticular infection, inflammatory arthropathy, bone tumors, fractures, and crystal deposition diseases.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"58 ","pages":"e20240048en"},"PeriodicalIF":0.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11887474/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143586506","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