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Chinese Journal of Colorectal Diseases(Electronic Edition) ›› 2023, Vol. 12 ›› Issue (02): 132-138. doi: 10.3877/cma.j.issn.2095-3224.2023.02.007

• Original Article • Previous Articles     Next Articles

Correlation of ADC histogram parameters from high-resolution diffusion-weighted imaging with clinical characteristics in rectal cancer: a retrospective study

Xin Wang1, Danqi Sun1, Jinyu Huang1,()   

  1. 1. Department of Radiology, the First Affiliated Hospital of Soochow Uniiversity, Suzhou 215000, China
  • Received:2022-08-24 Online:2023-04-25 Published:2023-05-04
  • Contact: Jinyu Huang

Abstract:

Objective

To elucidate the possible associations between ADC histogram parameters obtained using readout-segmented echo-planar imaging (rs-EPI; RESOLVE) diffusion-weighted magnetic resonance imaging (DW-MRI) and several clinical features in rectal cancer (RC).

Methods

This retrospective study was performed by screening RESOLVE DWI and postoperative pathological samples of 46 patients with rectal cancer. ADC histogram analysis was performed on the RESOLVE ADC maps. The patients were grouped according to cancer grade,TN stage,and the plasma carcinoembryonic antigen (CEA) level. The correlations between each clinical feature and ADC histogram parameters were evaluated using open source software MaZda.

Results

A total of 46 patients with pathologically confirmed RC were enrolled. Spearman's correlation analysis revealed that tumors with a lower T stage corresponded to lower Perc 1% values (r=0.358, P=0.015). Nevertheless,there were no significant differences in ADC parameters between tumor differentiation grade,N stage,and plasma CEA level (all P>0.05).

Conclusion

Our study revealed a significant correlation between the tumor T stage and preoperative Perc 1% ADC parameters alluding to a potential relationship between different pathologically confirmed T stages and histogram results. These findings suggest that ADC parameters derived from RESOLVE images may be used to assess the biological behaviors of RC.

Key words: Rectal neoplasms, Apparent diffusion coefficient, Clinical characteristics, Histogram analysis

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