Abstract
The aim of this study was to explore the potential of intravoxel incoherent motion magnetic resonance (MR) imaging in predicting and measuring responses to concurrent chemoradiotherapy (CCRT) in advanced cervical cancers. Thirty-seven patients with advanced cervical cancers scheduled for CCRT underwent MR examinations including intravoxel incoherent motion sequence with 9 b values (0-800 s/mm) before CCRT, 2 and 4 weeks after the initiation of CCRT, and immediately after CCRT. Apparent diffusion coefficient, f, D, and D* values were obtained during the course. The maximum diameter of the tumor was measured to determine the treatment efficiency. At the end of CCRT, 25 patients were classified as complete response and 12 as partial response. The pretreatment f of cervical cancer showed its efficiency in predicting partial response and complete response with an area under receiver operating characteristic curve of 0.768. During CCRT, the apparent diffusion coefficient, D, and D* values kept on rising, whereas f increased first and then decreased after 4 weeks of CCRT. Intravoxel incoherent motion MR imaging held great potential in both predicting and early monitoring treatment efficiency of advanced cervical cancer under CCRT.
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