Abstract #2555

Peripheral MR Angiography using velocity-sensitive gradient-echo technique

Dongchan Kim¹, Hyunseok Seo¹, Jaejin Cho¹, Kinam Kwon¹, and HyunWook Park¹

¹KAIST, Daejeon, Korea, Republic of

Recently quiescent-interval single-shot (QISS) non-contrast MR angiography (NC-MRA) technique was developed to obtain high-contrast peripheral angiographic images in a reasonable imaging time. QISS enhances contrast between the artery and unwanted signal by saturating signals from background, fat and vein. Thus, QISS needs multiple RF pulses for background saturation, which is limited in perfect saturation due to the inhomogeneity of main magnetic field. In this work, we propose a new MRA technique, which could generate peripheral angiogram without saturation pulses and an external ECG trigger using the velocity-sensitive gradient-echo (GRE) sequence.

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