Discrepancy between arterial spin labeling images and contrast-enhanced images of brain tumors
Takashi Abe 1 , Saho Irahara 2 , Yoichi Otomi 2 , Yuuki Obama 2 , Moriaki Yamanaka 2 , Seiji Iwamoto 2 , Sonoka Hisaoka 2 , Mungunkhuyag Majigsuren 2 , Delgerdalai Khashbat 2 , Mungunbagana Ganbold 2 , and Masafumi Harada 2
Institute of Health Biosciences The
Tokushima University Graduate School, Tokushima,
University Graduate School, Tokushima, Tokushima, Japan
In the imaging of intra-axial brain tumors, we sometimes
found hyper-intensity areas on arterial spin labeling (ASL)
outside of the enhanced tumor lesions. This study
investigated the clinical significance of this finding
in the differential diagnosis. Images from 38
consecutive patients who underwent ASL and CE-MRI with a
3T-MR scanner were examined (21; glioma, 8; metastasis,
9; lymphoma). About one third of cases showed this
finding, but any cases with brain metastasis didnt.
This finding indicating the presence of glioma or
lymphoma, not brain metastasis, and indicates a new
utility for ASL images in the diagnosis of brain tumors.
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