Purpose: Our goal was to characterize the MR features of pathologically documented gliosarcoma and to determine if these features help differentiate gliosarcoma from other intracranial neoplasms.
Method: MR studies of six patients with pathologically documented gliosarcoma were retrospectively analyzed.
Results: The tumors tended to be well defined lesions demonstrating either an inhomogeneous or cystic appearance with surrounding vasogenic edema. All tumors were characterized as primarily intraaxial but abutting a dural surface. On T2-weighted images, all tumors were of intermediate signal intensity with surrounding edema. The signal intensity of the tumor was similar to gray matter but was hypointense relative to other glial neoplasms. Postcontrast T1-weighted images showed intense tumor enhancement, often with a ring-like appearance. The isointense component on the T2-weighted images corresponded to this area of intense enhancement.
Conclusion: Gliosarcoma exhibits some characteristic MR features. It should be included in the differential diagnosis of any tumor that appears to be intraaxial but abuts a dural surface and is much less hypointense on T2-weighted images than other glial neoplasms.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/00004728-199609000-00006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Compressed SENSE acceleration factor influence on magnetic resonance image quality in patients with endometrial cancer.
Phys Med
January 2025
Center for Radiology, University Clinical Center of Vojvodina, Hajduk Veljkova 1-9, 21000 Novi Sad, Serbia; Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia. Electronic address:
Objectives: To investigate the impact of compressed sensing - sensitivity encoding (CS-SENSE) acceleration factor on the diagnostic performance of magnetic resonance imaging (MRI) within standard female pelvis protocol in patients with endometrial cancer.
Methods: T2-weighted turbo spin echo (TSE) sequence from standard female pelvic MRI protocol was chosen due to its long acquisition time and essential role in the evaluation of morphological characteristics of the female pelvic anatomical structures. Fully sampled reference scans and multiple prospectively 2x to 5x under-sampled CS-SENSE scans were acquired.
In vivo 9.4 Tesla MRI of a patient with drug-resistant epilepsy: Technical report.
Acta Neurochir (Wien)
January 2025
Department of Neurosurgery, Maastricht University Medical Centre, Maastricht, Netherlands.
Purpose: In resective epilepsy surgery for drug-resistant focal epilepsy (DRE), good seizure outcome is strongly associated with visualization of an epileptogenic lesion on MRI. Standard clinical MRI (≤ 3 Tesla (T)) may fail to detect subtle lesions. 7T MRI enhances detection and delineation, the potential benefits of increasing field strength to 9.
View Article and Find Full Text PDFThe confavreux lecture: The radiologically isolated syndrome diagnosis, prognosis and perspectives.
Mult Scler
January 2025
UR2CA-URRIS, Université Nice Côte d'Azur, Nice, France.
Radiologically isolated syndrome (RIS) is the earliest documented stage in the disease continuum of multiple sclerosis (MS). It is discovered incidentally in individuals who are asymptomatic but have typical lesions in the brain or spinal cord suggestive of autoimmune inflammatory demyelination. The revised 2023 RIS criteria aim to secure an accurate and timely diagnosis due to the presence of imaging mimics.
View Article and Find Full Text PDFDeep Learning Radiomics Nomogram Based on MRI for Differentiating between Borderline Ovarian Tumors and Stage I Ovarian Cancer: A Multicenter Study.
Acad Radiol
January 2025
Department of Radiology, the Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China (X.W., X.C., Y.C., S.C., M.W.). Electronic address:
Rationale And Objectives: To develop and validate a deep learning radiomics nomogram (DLRN) based on T2-weighted MRI to distinguish between borderline ovarian tumors (BOTs) and stage I epithelial ovarian cancer (EOC) preoperatively.
Materials And Methods: This retrospective multicenter study enrolled 279 patients from three centers, divided into a training set (n = 207) and an external test set (n = 72). The intra- and peritumoral radiomics analysis was employed to develop a combined radiomics model.
Systematic evaluation of adhesives for implant fixation in multimodal functional brain MRI.
MAGMA
January 2025
Translational Research Imaging Center (TRIC), Clinic of Radiology, University of Münster, Albert-Schweitzer-Campus 1, building A16, 48149, Münster, Germany.
Objective: Invasive multimodal fMRI in rodents is often compromised by susceptibility artifacts from adhesives used to secure cranial implants. We hypothesized that adhesive type, shape, and field strength significantly affect susceptibility artifacts, and systematically evaluated various adhesives.
Materials And Methods: Thirty-one adhesives were applied in constrained/unconstrained geometries and imaged with T2*-weighted EPI at 7.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!