Abstract #0606

Chronological evaluation of Cerebral Hemodynamics by Dynamic Susceptibility Contrast Magnetic Resonance Imaging after Indirect Bypass Surgery for Moyamoya Disease

Yosuke Ishii^1,2, Tadashi Nariai¹, Yoji Tanaka¹, HIroshi Aihara², Yoshio Suyama², Shinichi Wakabayashi², and Taketoshi Maehara¹

¹Neurosurgery, Tokyo Medial and Dental University, Tokyo, Japan, ²Neurosurgery, Suiseikai Kajikawa Hospital, Hiroshima, Japan

We used dynamic susceptibility contrast (DSC)-MRI to evaluate the chronological changes in hemodynamics after indirect bypass surgery for moyamoya disease. Twenty five patients who underwent indirect bypass surgery and repeated DSC–MRI measurement within the first 6 postoperative months were included. We analyzed mean transit time (MTT) delay using the cerebellum as control. Mean MTT delay in the anterior circulation area gradually decreased soon after surgery and stabilized after 3 postoperative months. Postoperative MTT delay values were significantly decreased compared with preoperative values from 1 to 2 weeks onwards. These results suggested DSC–MRI detected angiogenesis during the early postoperative stages.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.