Whole liver CT texture analysis to predict the development of colorectal liver metastases-A multicentre study

Eur J Radiol. 2017 Jul:92:64-71. doi: 10.1016/j.ejrad.2017.04.019. Epub 2017 Apr 26.

Abstract

Objectives: CT texture analysis has shown promise to differentiate colorectal cancer patients with/without hepatic metastases.

Aim: To investigate whether whole-liver CT texture analysis can also predict the development of colorectal liver metastases.

Material and methods: Retrospective multicentre study (n=165). Three subgroups were assessed: patients [A] without metastases (n=57), [B] with synchronous metastases (n=54) and [C] who developed metastases within ≤24 months (n=54). Whole-liver texture analysis was performed on primary staging CT. Mean grey-level intensity, entropy and uniformity were derived with different filters (σ0.5-2.5). Univariable logistic regression (group A vs. B) identified potentially predictive parameters, which were tested in multivariable analyses to predict development of metastases (group A vs. C), including subgroup analyses for early (≤6 months), intermediate (7-12 months) and late (13-24 months) metastases.

Results: Univariable analysis identified uniformity (σ0.5), sex, tumour site, nodal stage and carcinoembryonic antigen as potential predictors. Uniformity remained a significant predictor in multivariable analysis to predict early metastases (OR 0.56). None of the parameters could predict intermediate/late metastases.

Conclusions: Whole-liver CT-texture analysis has potential to predict patients at risk of developing early liver metastases ≤6 months, but is not robust enough to identify patients at risk of developing metastases at later stage.

Keywords: Colorectal cancer; Computed tomography; Liver metastases; Metachronous metastases; Occult disease; Texture analysis.

MeSH terms

  • Adult
  • Carcinoembryonic Antigen / physiology*
  • Colonic Neoplasms / diagnostic imaging*
  • Colonic Neoplasms / pathology
  • Female
  • Humans
  • Liver Neoplasms / diagnostic imaging*
  • Liver Neoplasms / pathology*
  • Male
  • Middle Aged
  • Retrospective Studies
  • Tomography, X-Ray Computed / methods*

Substances

  • Carcinoembryonic Antigen