Real-time MRI: recent advances using radial FLASH

• DOI: 10.2217/iim.12.32
• Publication Date: 2012-09-05T11:30:38Z
• Authors: Martin Uecker; Shuo Zhang; Dirk Voit; Klaus-Dietmar Mer...; Jens Frahm
• Keywords: 03 medical and health sciences; 0302 clinical medicine

Recent advances in real-time MRI result high-quality images with acquisition times of only approximately 30 ms. The technique employs a fast low-angle shot sequence proton density, T1 or T2/T1 contrast and radial data encoding for motion robustness. High temporal resolution is achieved by an up to 20-fold undersampling the data. An iterative reconstruction algorithm estimates image as solution nonlinear inverse problem ensures fidelity regularization, which exploits continuity successive frames during dynamic imaging. Preliminary examinations at field strength 3T range from joint dynamics, speaking swallowing 3D localization objects space. In particular, largely facilitates assessments cardiovascular function quantitative blood flow. Taken together, advanced methods allow hitherto inaccessible studies, lead more robust shorter examinations, improve patient comf...