Yasuo Takehara1, Haruo Isoda2, Shuhei Yamashita2, Mika Kamiya2, Naoki Unno3, Hiroyasu Takeda1, Masaya Hirano4, Marcus T. Alley5, Roland Bammer5, Takashi Kosugi6, Yasuhide Ohkura6, Harumi Sakahara
1Radiology, Hamamatsu Univ. Hospital, Hamamatsu, Shizuoka, Japan; 2Radiology, Hamamatsu Univ. School of Medicine, Hamamatsu, Shizuoka, Japan; 3Vascular Surgery, Hamamatsu Univ. School of Medicine; 4GE Healthcare, Hino, Tokyo, Japan; 5Radiology, Stanford Univ.; 6R's Tech Co. Ltd.
Combined use of time-resolved 3 dimensional phase contrast MRA (4D-flow) and flow analysis software was useful in planning the catheter and surgical intervention for the aneurismal dilation of the splanchnic arteries. The method identified the significant alteration in the flow dynamics in splanchnic arteries mostly due to celiac artery stenosis (73 %). Measured WSS of the segment of aneurismal wall was significantly lower ( < 1.5 Pa) than normal segments, which may be reflecting that the aneurismal wall is continuously affected by the growing risk of rupture.