Proceedings of the KSMRM Conference (대한자기공명의과학회:학술대회논문집)

Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회)
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3T DWIs with Different b-Values in Brain Tumors

  • 김대진 (서울대학교병원 방사선과학교실) ;
  • 장기현 (서울대학교병원 방사선과학교실) ;
  • 송인찬 (서울대학교병원 방사선과학교실) ;
  • 권배주 (서울대학교병원 방사선과학교실) ;
  • 한문희 (서울대학교병원 방사선과학교실)
  • Published : 2003.10.01
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Abstract

Purpose： It is known that diffusion-weighted MR imaging (DWI) is helpful in the evaluation of malignancy grading in brain tumor. This study was to evaluate the DWls with different b-values of various brain tumors in order to determine optimal b-values on 3T MR unit. Method： On a 3T MR unit, DWls with b-values of 1, 000, 3, 000 and 5, 000 s/mm2 were obtained in 20 patients of pathologically-proven brain tumors (7 metastases, 4 high grade gliomas, 2 Iymphomas, 2 low grade gliomas, 2 germinomas, and one each of germinoma, meningioma, hemangioblastoma and central neurocytoma. The overall image quality, contrast between normal brain parenchyma and tumor and signal intensities of solid and cystic components were comparatively evaluated among DWls with different b-values by visual inspection.

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