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Abstract #5062

Utility of diffusion-weighted magnetic resonance imaging in predicting treatment response to radiotherapy in locally advanced cervical cancer

Chunyu Liang1, Zhiyuan Xu2, and Xinping Shen1
1Department of Medical Imaging, Radiology Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China, 2Department of Clinical Oncology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China

Synopsis

Keywords: DWI/DTI/DKI, Tumor, cervical cancer; radiotherapy;diffusion-weighted imaging;apparent diffusion coeffificient

Motivation: Radiotherapy (RT) is regarded as standard therapy for locally advanced cervical cancer. To date there are no accepted modalities that can reliably predict treatment response.

Goal(s): Present study aimed to explore the baseline and interim-ADC as well as change in ADC for predicting treatment outcomes.

Approach: 80 patients underwent pelvis MRI at least three times: before treatment, juring the course of RT and after completion of RT. Following values were calculated: Pre-ADC , Interim-ADC, △ADC and △%ADC. Treatment outcome was assessed by RECIST.

Results: Pre-treatment tumor size and interim-ADC could be potential biomarkers for predicting treatment outcomes in cervical cancer patients referred for RT.

Impact: The results of present study can evaluate the early efficacy of RT, in order to allow for the timely adjustment of treatment plans, improve the efficacy and prognosis, and provide a reference for the clinical individualized treatment of cervical cancer.

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