Preliminary quantitative research of MR diffusion weighted imaging in soft tissue tumors

JIA Fei-ge; ZHANG Li-na; WANG Shao-wu

Journal of China Clinic Medical Imaging ›› 2006, Vol. 17 ›› Issue (5) : 272-274.

论著

Preliminary quantitative research of MR diffusion weighted imaging in soft tissue tumors

JIA Fei-ge1, ZHANG Li-na2, WANG Shao-wu2

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Abstract

Objective: To evaluate the diagnostic value of diffusion-weighted imaging(DWI) apparent diffusion coefficient(ADC) and exponential diffusion coefficient(EDC) in differentiation of benign from malignant soft tissue tumors. Methods: Twenty-three patients with soft tissue tumors were studied by DWI. All DWI were performed with SE-EPI technique, which “b” was 0 and 300s/mm². DWI was analyzed to obtain ADC and EDC of tumor parenchyma. Results: The average value of ADC was(1.86±0.19)×10^-3mm²/s for malignant group and (1.64±0.15)×10^-3mm²/s for benign group when “b” was 300s/mm2. The mean ADC in benign and malignant tumors had significant difference. The average value of EDC was (160.02±83.23)×10^-3 for malignant group and (136.89±44.60)×10^-3 for benign group when “b” was 300s/mm². The mean EDC in benign and malignant tumors has no significant difference. Conclusion: ①ADC is helpful to distinguish malignant tumors from benign tumors when “b” is 300s/mm². ②EDC has limited value in distinguishing malignant tumors from benign tumors.

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soft tissue neoplasms / diffusion magnetic resonance imaging

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JIA Fei-ge;ZHANG Li-na;WANG Shao-wu. Preliminary quantitative research of MR diffusion weighted imaging in soft tissue tumors[J]. Journal of China Clinic Medical Imaging. 2006, 17(5): 272-274