Abstract #2664

A new accelerated time-of-flight Brain MR angiography (Spiral MRA) with a combination technique of spiral acquisition and fat suppression: ProSet

Kayoko Abe¹, Kazufumi Suzuki¹, Masami Yoneyama², and Shuji Sakai¹

¹Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan, ²Philips Electronics Japan, Ltd., Tokyo, Japan

Spiral MRA is a new accelerated time-of-flight MR angiography (TOF-MRA), the k space is filled with data in a spiral trajectory on the frequency and phase encoding directions. In this study, the effect of TONE and ProSet on Spiral MRA was evaluated by comparing image quality between Spiral MRA and conventional TOF-MRA. As the result, TONE was rarely effective on Spiral MRA, and Spiral MRA with ProSet provided high quality images, and reduced the acquisition time by approximately 70%, compared to conventional TOF-MRA with ProSet. In conclusion, Spiral MRA with ProSet is a useful, accelerated technique without image quality deterioration.

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