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Quantitative, qualitative Evaluation of Diffusion-Weighted MRI using Optimal b-value(s/mm2) for Female Pelvis

여성골반에 대한 최적의 b-value(s/mm2)를 이용한 확산강조 자기공명영상의 정량적, 성적 평가

  • 구은회 (청주대학교 방사선학과)
  • Received : 2012.12.05
  • Accepted : 2012.12.21
  • Published : 2013.01.31

Abstract

The purpose of this study is to know the clinical usefulness of optimal b-values by quantitative, qualitative evaluation of DW-MRI for lesions of benignity and malignity of female pelvis. The b-values used in DWI were 600, 800, 1000, 1200, 1400($s/mm^2$). Mean SNR and CNR of myoma in b-value 800 were the highest result as $84.6{\pm}4.57$(p=0.024) and $50.13{\pm}5.47$(p=0.028), Mean SNR and CNR of cervical cancer were the highest result as $12.0{\pm}2.04$(p=0.047) and $10.6{\pm}1.24$(p=0.001), Mean ADC value in myoma and cervical cancer in b-value 800 were $1.19{\times}10^{-3}mm^2/s$(p=0.008), $0.96{\times}10^{-3}mm^2/s$(p=0.027). As a qualitative analysis, the delineation and conspicuity were the highest result as $4.02{\pm}0.18$(p=0.028), $4.39{\pm}0.25$(p=0.015) on b-value 800. DW-MRI is an important method, and the optimal b values is 800 $s/mm^2$ for differentiation between benign and malignant lesions of female pelvis.

Keywords

Diffusion Weighted Image;b-values;Apparent Diffusion Coefficient