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Brain Tumor Akira HIGASHIYAMA 1 , Mitsuru MATSUKI 2 1Department of Diagnostic Radiology, Osaka Medical College 2Department of Radiology, Kindai University Keyword: 脳腫瘍 , CT , MRI , 等吸収 , 等信号 , brain tumor , isoattenuation , isointense pp.229-237
Published Date 2021/3/10
DOI https://doi.org/10.11477/mf.1436204383
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 CT numbers depend on the electron density and the effective atomic number of materials. The CT numbers of the cerebrospinal fluid, gray matter, and white matter are 0 HU, 30-40 HU, and 20-30 HU, respectively. We should interpret the head CT scan based on the difference between the CT numbers of the white and gray matter. Moreover, we recommend image interpretation by delineating the cortical ribbon. For the detection of brain tumors using MR, T1-weighted and T2-weighted axial images alone are insufficient. It is important to also use other sequences such as FLAIR, diffusion-weighted images, and multi-section images.


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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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