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Abstract #2381

Variable-Density Velocity-Selective Preparation for Non-Contrast-Enhnaced MR Angiography

Minyoung Kim1,2, Jaeseok Park3,4, Seunghong Choi5, and Taehoon Shin1,2
1Department of Mechanical and Biomedical Engineering, Ewha Womans University, Seoul, Korea, Republic of, 2Graduate Program in Smart Factory, Ewha Womans University, Seoul, Korea, Republic of, 3Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Korea, Republic of, 4Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, Korea, Republic of, 5Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of

Synopsis

Keywords: Pulse Sequence Design, Pulse Sequence Design, Variable Density Sampling ExcitationVelocity-selective (VS) magnetization preparation has shown great promise for non-contrast-enhanced MR angiography. Under the excitation k-space formalism, VS preparation pulse allocated RF weights to k-space at uniform intervals which leads to the aliased excitation at the inverse of the k-space interval (termed velocity FOV). In this study, we proposed a new version of VS preparation pulse with a diffused pattern of aliased saturation. The initial in-vivo test of the new version of VS-MRA shows a reduced effect of the aliased saturation compared with conventional VS-MRA.

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