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The added value of the CSF cleft on ADC in distinguishing extra-axial from intra-axial tumors

  • Junyoung Kim
    Affiliations
    Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine. 211 Eonju-ro, Gangnam-gu, Seoul 135-720, Republic of Korea
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  • Chang-Ki Hong
    Affiliations
    Department of Neurosurgery, Gangnam Severance Hospital, Yonsei University College of Medicine. 211 Eonju-ro, Gangnam-gu, Seoul 135-720, Republic of Korea
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  • Sang Hyun Suh
    Affiliations
    Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine. 211 Eonju-ro, Gangnam-gu, Seoul 135-720, Republic of Korea
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  • Woo Sang Jung
    Affiliations
    Department of Radiology, Ajou University School of Medicine, 164, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do, South Korea 16499
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  • Sung Jun Ahn
    Correspondence
    Corresponding author at: Department of Radiology, Gangnam Severance Hospital, Yonsei University, College of Medicine, 211Eonju-ro, Gangnam-gu, Seoul 135-720, Korea. Tel.: +82 2 2019 3510; fax: +82 2 3462 5472.
    Affiliations
    Department of Radiology, Gangnam Severance Hospital, Yonsei University College of Medicine. 211 Eonju-ro, Gangnam-gu, Seoul 135-720, Republic of Korea
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      Highlights

      • The CSF cleft is more prominent on ADC map than on T2WI.
      • Diagnostic performance of CSF cleft is increased when ADC and T2WI are used together.
      • ADC map might be helpful in tumor localization as well as tumor characterization.

      Abstract

      We investigated whether the CSF cleft sign on ADC maps is beneficial for differentiating extra-axial tumors from intra-axial tumors. Seventy-seven intracranial tumor patients were reviewed. Visual grades of CSF cleft sign on T2WI and ADC were compared. The diagnostic performance of CSF cleft sign using ADC plus T2WI was compared with that using T2WI alone. A CSF cleft was more easily visualized on ADC (P < 0.01). The diagnostic performance of CSF cleft sign significantly increased in accuracy of 85.7 to 96.1% (P < 0.01) when ADC and T2WI were used together.

      Keywords

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