Meeting Banner
Abstract #2449

4D Flow MRI analysis of cerebral blood flow before and after EC-IC bypass surgery

Erika Orita1, Tetsuro Sekine1, Ryo Takagi1, Yasuo Amano1,2, Takahiro Andoh1, Makoto Obara3, Yoshio Matsumura1, and Shin-ichiro Kumita1

1Radiology, Nippon Medical School, Tokyo, Japan, 2Radiology, Nihon University School of Medicine, Tokyo, Japan, 3Healthcare, Philips Electronics Japan, Tokyo, Japan

The purpose of this study was to demonstrate the feasibility of 4D Flow MRI to monitor the change of flow dynamics between before and after extracranial-intracranial (EC-IC) bypass surgery. We enrolled 14 patients who underwent EC-IC bypass. In all, 5 patients underwent radial artery graft (RAG) bypass and 9 patients underwent superficial temporal artery (STA) bypass. All patients underwent 4D Flow MRI preoperatively and 3 weeks after surgery. We measured blood flow volume (BFV) of bilateral internal carotid artery (ICA), basilar artery (BA), and EC-IC bypass artery using 4D flow MRI. Post/pre-operative BFV ratio of contralateral ICA was statistically higher in patients with the RAG bypass group than in those with the STA bypass group (1.28±0.26 in RAG bypass group vs 0.94±0.14 in STA bypass group, p<0.01). 4D Flow MRI could assess comprehensive flow dynamics of EC-IC bypass surgery. It is feasible to clarify the change of contribution from each artery.

This abstract and the presentation materials are available to members only; a login is required.

Join Here