Akira Sasao1, Toshinori Hirai1, Shinichiro Nishimura1, Mika Kitajima1, Ryuji Murakami1, Motohiro Morioka2, Shigetoshi Yano1, Jun-ichi Kuratsu2, Yasuyuki Yamashita1
1Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan; 2Neurosurgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
Assessment of vascular supply from the external carotid artery in extra-axial brain tumors with regional perfusion imaging (RPI) has not been reported. We prospectively studied conventional MR, conventional arterial spin labeling (ASL) and RPI in 7 patients with hypervascular extra-axial brain tumors. In conventional ASL images, tumor perfusion was higher than or equal to the normal-appearing cortex. In the assessment of the extent of tumor vascular territory on the conventional ASL and RPI images, the tumors were classified as coincided for 3 lesions and similar for 4. RPI was feasible for assessing the vascular supply of hypervascular extra-axial brain tumors.