Abstract #2952

Robust free-breathing hepatic MRI using respiratory-gated 3D stack-of-stars sequence

Takashige Yoshida^1,2, Yuki Furukawa¹, Hiroaki Tsuchiya¹, Kohei Yuda¹, Masami Yoneyama³, Nobuo Kawauchi¹, and Haruo Saito⁴

¹radiology, Tokyo metropolitan police hospital, Tokyo, Japan, ²Graduate school of Medicine, Tohoku university, Miyagi, Japan, ³Marketing, Philips Electronics Japan, Tokyo, Japan, ⁴Division of Diagnostic Image Analysis, Graduate school of Medicine, Tohoku University, Miyagi, Japan

A extend of slice direction and high resolution imaging cannot help to increase scan time in hepatic MRI. The hepatic MRI is necessary to hold their breath, and breath holding influenced on image quality. Hence improved image quality on hepatic MRI is a required free breath sequence. Our study using 3D stack-of-stars trajectory with respiratory navigator is objective that perfectly eliminate respiratory motion effect. A sequence combined motion averaging by stack-of-stars and correction by navigator is possible to eliminate respiratory motion.

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