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Abstract #1772

The effect of the refocusing flip angle on CSF dynamics imaging using multi-spin echo acquisition cine imaging (MUSACI)

Tatsuhiro Wada1, Chiaki Tokunaga1, Osamu Togao2, Yasuo Yamashita1, Kouji Kobayashi1, Masami Yoneyama3, and Toyoyuki Kato1
1Division of Radiology, Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan, 2Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan, 3Philips Japan, Fukuoka, Japan

Multi-spin echo acquisition cine imaging (MUSACI) is based on the multi-spin echo technique and used for detection of cerebrospinal fluid (CSF) movement. MUSACI detects CSF movement as a signal loss due to proton phase dispersion and flow void. To better detect the CSF loss caused by CSF movement and reduce the CSF signal loss caused by T2 decay, we modified the refocusing flip angle modulation using pseudo steady state sequence (PSS). The modulation of refocusing flip angle in PSS improved the CSF dynamic imaging using MUSACI.

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