Multiparametric MRI of the prostate is now recommended as the initial diagnostic test for men presenting with suspected prostate cancer, with a negative MRI enabling safe avoidance of biopsy and a positive result enabling MRI-directed sampling of lesions. The diagnostic pathway consists of several step...
Contrast-Enhanced T1-Weighted Head and Neck MRI: Prospective Intraindividual Image Quality Comparison of Spiral GRE, Cartesian GRE, and Cartesian TSE Seque... Contrast-Enhanced T1-Weighted Head and Neck MRI: Prospective Intraindividual Image Quality Comparison of Spiral GRE, Cartesian GRE, and ...
However, it has been recently criticized that classifiers trained with small sample sizes often lead to high accuracies, but low external validity [23]. Hence, in contrast to previous studies, we trained and validated a biological sex classifier with large samples of CG-participants without any ...
time–intensity curves. Values such as peak enhancement, wash-in, and wash-out can be obtained.Myelomaand metastatic lesions often have curves with rapid wash-in (with or without wash-out), whereas post-treatment changes demonstrate slow wash-in with a persistent or plateau course of ...
Since the magnetic field runs straight down the center of the machine, the hydrogen protons line up so that they're pointing to either the patient's feet or the head. About half go each way, so that the vast majority of the protons cancel each other out -- that is, for each atom ...
We hypothesized that gadolinium-enhanced MRI without subtraction was comparable with subtraction MRI in depicting the femoral head perfusion.关键词: subtraction MRI, contrast-enhanced MRI, Perthes’ disease DOI: 10.1302/1863-2548.13.180136
Lesion conspicuity, the relative enhancement of a lesion compared to surrounding tissue, is a new descriptor in the ACR BI-RADS 2022 CEM supplement. We compared lesion conspicuity in contrast-enhanced mammography (CEM) and contrast-enhanced MRI (CE-MRI) in patients with suspicious breast lesions....
Head and neck squamous cell carcinoma (HNSCC) shows a remarkable heterogeneity between tumors, which may be captured by a variety of quantitative features
(age range, 1.2-16.8 years) without TMJ pathology undergoing head MRI, fat-saturated T2-weighted (T2W) and postcontrast fat-saturated T1-weighted (T1W) images sagittally aligned to the 54 TMJs, besides standard T1W and T2W images, were assessed for bony and soft tissue signal intensity ...
head size, and respiratory variables, and only eliminated sex differences when both head size and respiration were accounted for (Fig.4k). Though motion does not cause global signals (which should largely drive gFC), as a precaution we also added motion covariates (FDoriginal, FDfiltered, and ...