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MRI in the evaluation of plantar plate disease: diagnostic value of the "stress test".
J Orthop Traumatol
December 2024
Sapienza Universitiy, Rome, Italy.
Introduction: The plantar plate, also called the plantar ligament, is a fibrocartilaginous structure found in the metatarsophalangeal (MTP) and interphalangeal (IP) joints. Our study aimed to evaluate the role of magnetic resonance imaging (MRI) performed with the patient in the standard position or with joint hyperextension (the "stress test", ST) in the study of plantar plate (PP) disease that involves metatarsophalangeal joints.
Materials And Methods: All patients underwent forefoot MRI (Atroscan C, Esaote, Genoa, Italy), operating at 0.
Cerebral glucose metabolism (CMRGlc) systematically decreases with advancing age. We sought to identify correlates of decreased CMRGlc in the spectral properties of fMRI signals imaged in the task-free state. We analyzed lifespan resting-state fMRI data acquired in 455 healthy adults (ages 18-87 years) and cerebral metabolic data acquired in a separate cohort of 94 healthy adults (ages 25-45 years, 65-85 years).
View Article and Find Full Text PDFA quantitative multi-parameter mapping protocol standardized for clinical research in multiple sclerosis.
Sci Rep
December 2024
Experimental and Clinical Research Center, a Cooperation Between Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Charité - Universitätsmedizin Berlin, Geschäftsführung, Charitéplatz 1, 10117, Berlin, Germany.
Quantitative magnetic resonance imaging (qMRI) involves mapping microstructure in standardized units sensitive to histological properties and supplements conventional MRI, which relies on contrast weighted images where intensities have no biophysical meaning. While measuring tissue properties such as myelin, iron or water content is desired in a disease context, qMRI changes may typically reflect mixed influences from aging or pre-clinical degeneration. We used a fast multi-parameter mapping (MPM) protocol for clinical routine at 3T to reconstruct whole-brain quantitative maps of magnetization transfer saturation (MT), proton density (PD), longitudinal (R1), and transverse relaxation rate (R2*) with 1.
View Article and Find Full Text PDFPost-correctional improvement of T2-weighted fast spin echo magnetic resonance imaging pulse sequence for detecting high intensity focused ultrasound thermal lesions.
Heliyon
November 2024
Department of Physics, Toronto Metropolitan University, 350 Victoria Street, Toronto, ON, Canada.
Article Synopsis
- * The T2-weighted fast spin echo (T2W-FSE) MRI technique is commonly used to visualize HIFU-induced thermal lesions but suffers from issues like ringing artifacts and reduced spatial resolution due to T2 decay effects.
- * By applying an inverse Fourier transform (IFT) multiplication scheme with specially designed filters, researchers improved MRI image quality, resulting in significantly better spatial resolutions and enhanced signal-to-noise ratio in detecting thermal lesions.
The Developing Human Connectome Project: A fast deep learning-based pipeline for neonatal cortical surface reconstruction.
Med Image Anal
February 2025
Department of Computing, Imperial College London, UK; Chair for AI in Healthcare and Medicine, Klinikum rechts der Isar, Technical University of Munich, Germany.
Article Synopsis
- The Developing Human Connectome Project (dHCP) focuses on studying brain development during the perinatal period and has created a processing pipeline for analyzing brain MR images.
- Current processing with this pipeline takes over 6.5 hours per scan, which is inefficient for large studies.
- The proposed deep learning-based pipeline drastically speeds up the reconstruction process to just 24 seconds, improving the surface quality of brain images for the majority of samples while being nearly 1000 times faster than the original method.
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