Abstract #2671

4D Flow MRI Analysis of Cerebral Blood Flow Before and After The Superficial Temporal Artery to Middle Cerebral Artery Bypass Surgery for Atherosclerotic Disease

Tetsuro Sekine¹, Erika Orita¹, Yasuo Murai², Ryo Takagi³, Yasuo Amano³, Takahiro Ando¹, Kotomi Iwata¹, Masashi Ogawa¹, Makoto Obara⁴, and Shin-ichiro Kumita¹

¹Radiology, Nippon Medical School, Tokyo, Japan, ²Neurosurgery, Nippon Medical School, Tokyo, Japan, ³Radiology, Nihon University, Tokyo, Japan, ⁴Philips Electronics Japan Ltd, Tokyo, Japan

The purpose of this study was to clarify the change in the hemodynamics after superficial temporal artery to middle cerebral artery (STA-MCA) bypass surgery using 4D Flow MRI. We enrolled 20 patients who underwent 4D Flow MRI preoperatively and 3 weeks after the surgery. The blood flow volume (BFV) of ipsilateral STA and ipsilateral ICA significantly increased after the surgery (0.53±0.22 vs. 1.78±0.54 ml/sec (p< 0.001); 2.37±5.09 vs. 1.82±3.42 ml/sec (p=0.03)). While, no significant difference was observed in total-BFV (p = 0.24). It may indicate that ipsilateral STA and intracranial native artery supply blood flow complementarily after surgery.

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