Radiologia Brasileira最新文献_第4页

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

Expected imaging findings and postoperative complications of median sternotomy. 胸骨正中切开术的预期影像学表现及术后并发症。

Radiologia Brasileira Pub Date : 2025-02-11 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0094

Camila Pietroski Reifegerste, Bruno Lima Moreira, Renan Aguena Arakaki, Augusto Kreling Medeiros

引用次数: 0

Reply to: The dark side of T2: central nervous system lesions with low signal intensity on T2-weighted imaging. T2暗面：T2加权成像低信号的中枢神经系统病变。

Radiologia Brasileira Pub Date : 2025-02-07 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0087

Venkatraman Indiran

引用次数: 0

Unenhanced magnetic resonance imaging for the evaluation of sonographically indeterminate ovarian and adnexal masses. 无增强磁共振成像评价超声不确定卵巢和附件肿块。

Radiologia Brasileira Pub Date : 2025-02-07 eCollection Date: 2025-01-01 DOI: 10.1590/0100-3984.2024.0032

Behnaz Moradi, Maryam Aghasi, Maryam Rahmani, Elham Sharifi, Mahrooz Malek, Fariba Yarandi, Masoumeh Banihashemian, Nadereh Behtash, Hamed Abdolghafoorian

引用次数: 0

Hyperintense lesions of the middle cerebellar peduncle and beyond: a pictorial essay. 小脑中脚及其他部位的高强度病变：一篇图片文章。

Radiologia Brasileira Pub Date : 2025-01-10 eCollection Date: 2024-01-01 DOI: 10.1590/0100-3984.2024.0001

João Vitor Gerdulli Tamanini, Guilherme Antonio Silva Ribeiro, Adriana Tami Kimura, Luiz Fernando Borella, Tomás de Andrade Freddi, Fabiano Reis

{"title":"Hyperintense lesions of the middle cerebellar peduncle and beyond: a pictorial essay.","authors":"João Vitor Gerdulli Tamanini, Guilherme Antonio Silva Ribeiro, Adriana Tami Kimura, Luiz Fernando Borella, Tomás de Andrade Freddi, Fabiano Reis","doi":"10.1590/0100-3984.2024.0001","DOIUrl":"10.1590/0100-3984.2024.0001","url":null,"abstract":"The middle cerebellar peduncle (MCP) is the largest afferent system of the cerebellum and consists of fibres from the cortico-ponto-cerebellar tract. Specifically, several relevant diseases can present with hyperintensity in the MCP on T2-weighted/fluid-attenuated inversion recovery (T2/FLAIR) magnetic resonance imaging sequences, including multiple sclerosis; acute disseminated encephalomyelitis; neuromyelitis optica spectrum disorder; progressive multifocal leucoencephalopathy; hepatic encephalopathy; osmotic demyelination syndrome; multiple system atrophy; fragile X-associated tremor/ataxia syndrome; megalencephalic leucoencephalopathy with subcortical cysts; spinocerebellar ataxias; hemi-pontine infarct with trans-axonal degeneration; and diffuse midline glioma with the histone H3K27M mutation. The aim of this pictorial review is to discuss the imaging findings that are relevant for the differential diagnosis of diseases presenting with MCP hyperintensity on T2/FLAIR sequences. Such knowledge is of utmost importance for the practicing radiologist.","PeriodicalId":20842,"journal":{"name":"Radiologia Brasileira","volume":"57 ","pages":"e20240001"},"PeriodicalIF":0.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11740878/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143010494","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