Diffusion and Perfusion MRI Prediction of Progression-Free Survival in Patients With Hepatocellular Carcinoma Treated With Concurrent Chemoradiotherapy

作者：Kim Kyung Ah; Park Mi Suk^*; Ji Hyun Jun; Park Jun Yong; Han Kwang Hyub; Kim Myeong Jin; Kim Ki Whang

来源：Journal of Magnetic Resonance Imaging, 2014, 39(2): 286-292.

DOI：10.1002/jmri.24161

• hepatocellular carcinoma
• concurrent chemoradiotherapy
• diffusion-weighted image
• apparent diffusion coefficient
• DCE MRI

PurposeTo assess whether MR perfusion and diffusion parameters taken before concurrent chemoradiotherapy (CCRT) are useful imaging biomarkers for predicting progression-free survival (PFS) in patients with hepatocellular carcinoma (HCC). %26lt;br%26gt;Materials and MethodsTwenty patients with locally advanced HCC who had no treatment before CCRT underwent dynamic contrast-enhanced (DCE) and diffusion-weighted MRI. Mean values of the volume transfer constant (K-trans), reflex constant (K-ep), extravascular extracellular volume fraction (V-e) and the apparent diffusion coefficient (ADC) were estimated on a region of interest. The best cutoff value for each factor was assessed to differentiate between patients who had PFS shorter or longer than the median PFS. Patients were dichotomized in terms of the cutoff value. The survival outcome of the two groups and the predictive ability of each factor on PFS were evaluated. %26lt;br%26gt;ResultsMedian time to PFS was 179 days. The best cutoff values for ADC, K-trans, K-ep, and V-e was 1.008 x 10(-3) mm(2) s(-1), 0.108 min(-1), 0.570 min(-1), and 0.298%. Patients with higher ADC had significantly longer PFS than those with lower ADC(P%26lt;0.0001). %26lt;br%26gt;ConclusionThe ADC of HCC acquired before CCRT correlated with PFS and was valuable in the prediction of the clinical outcome of HCC treated with CCRT. J. Magn. Reson. Imaging 2014;39:286-292.

• 出版日期2014-2