Abstract #3933

Non-Contrast Enhanced Renal Artery Angiography with a Respiratory Triggered 3D Balanced SSFP Sequence: Comparison of Optimized Repetitive Arterial or Vein Labeling (RAVEL) Method with and Without T2prep

Kosuke Morita¹, Tomohiro Namimoto, Masanori Komi², Masahiro Hashida², Yasuyuki Yamashita, Yoshiaki Komori³

¹Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, kumamoto, 1-1-1 honjo, Japan; ²Radiology, Kumamoto University; ³Philips Electronics Japan

The purpose of our study was to optimize imaging parameters of the respiratory-triggered Repetitive Arterial or VEin Labeling (RAVEL) method with selective inversion pulse for the renal arteries and to apply optimized non-contrast MR renal angiography for normal volunteers. Moreover, we evaluated the utility of T2prep to suppress a background signal for the RAVEL method.Non-contrast MRA using the respiratory-triggered RAVEL with 3D balanced SSFP was available to visualize renal arteries especially when the FA and TI were optimized. Furthermore, T2prep improves vessel/background contrast and image quality of the aorta and renal artery without the use of contrast media.