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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 25:248-251, February 2004
© 2004 American Society of Neuroradiology

Technical Note
BRAIN

Distinguishing between Anterior Cerebral Artery and Middle Cerebral Artery Perfusion by Color-Coded Perfusion Direction Mapping with Arterial Spin Labeling

Toshiaki Taoka^a, Satoru Iwasaki^b, Hiroyuki Nakagawa^a, Akio Fukusumi^a, Shinji Hirohashi^a, Masahiko Sakamoto^a, Kimihiko Kichikawa^a and Katsutoshi Murata^c

^a Department of Radiology, Nara Medical University, Nara, Japan
^b Department of Radiology, Higashiosaka City General Hospital, Higashiosaka, Japan
^c Siemens Asahi Meditech, Tokyo, Japan

Address reprint requests to Toshiaki Taoka, Department of Radiology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan

Summary: The purpose of this study was to evaluate collateral circulation by describing anterior cerebral artery and middle cerebral artery perfusion areas. Pairs of image sets spin labeled on the medial and lateral side were used. A pixel-by-pixel t test was performed, with blue gradation used to display lateral perfusion (ie, middle cerebral artery) and orange gradation for anterior cerebral artery perfusion. Extensions of anterior cerebral artery perfusion areas in cases of middle cerebral artery stenosis were described. This method may aid in estimation of collateral circulation for stroke treatment.

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