Erschienen in:
04.08.2017 | Oncology
Multi-parametric MRI in cervical cancer: early prediction of response to concurrent chemoradiotherapy in combination with clinical prognostic factors
verfasst von:
Wei Yang, Jin Wei Qiang, Hai Ping Tian, Bing Chen, Ai Jun Wang, Jian Guo Zhao
Erschienen in:
European Radiology
|
Ausgabe 1/2018
Einloggen, um Zugang zu erhalten
Abstract
Objective
To investigate the prediction of response to concurrent chemoradiotherapy (CCRT) through a combination of pretreatment multi-parametric magnetic resonance imaging (MRI) with clinical prognostic factors (CPF) in cervical cancer patients.
Methods
Sixty-five patients underwent conventional MRI, diffusion-weighted imaging (DWI), and dynamic contrast-enhanced MRI (DCE-MRI) before CCRT. The patients were divided into non- and residual tumour groups according to post-treatment MRI. Pretreatment MRI parameters and CPF between the two groups were compared and prognostic factors, optimal thresholds, and predictive performance for post-treatment residual tumour occurrence were estimated.
Results
The residual group showed a lower maximum slope of increase (MSIL) and signal enhancement ratio (SERL) in low-perfusion subregions, a higher apparent diffusion coefficient (ADC) value, and a higher stage than the non-residual tumour group (p < 0.001, p = 0.003, p < 0.001, and p < 0.001, respectively). MSIL and ADC were independent prognostic factors. The combination of both measures improved the diagnostic performance compared with individual MRI parameters. A further combination of these two factors with CPF exhibited the highest predictive performance.
Conclusions
Pretreatment MSIL and ADC were independent prognostic factors for cervical cancer. The predictive capacity of multi-parametric MRI was superior to individual MRI parameters. The combination of multi-parametric MRI with CPF further improved the predictive performance.
Key points
• Pretreatment MSI
L
and ADC were independent prognostic factors for post-treatment residual tumours.
• The residual groups showed lower MSI
L
, higher ADC and higher stage.
• The predictive capacity of multi-parametric MRI was superior to individual MRI parameters.
• The combination of multi-parametric MRI with CPF exhibited the highest predictive performance.