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759
Preoperative imaging for colorectal liver metastases: a nationwide population-based study
A K E Elfrink1,2, M Pool3,4, L R van der Werf1,5
1Scientific Bureau, Dutch Institute for Clinical Auditing, Leiden, the Netherlands.
BJS Open
|May 7, 2020
Summary
Preoperative imaging for colorectal liver metastases (CRLM) shows increasing use of MRI and decreasing use of 18F-FDG PET-CT. Significant variation in imaging practices exists across Dutch hospitals and networks.
Area of Science:
- Radiology
- Oncology
- Medical Imaging
Background:
- Colorectal liver metastases (CRLM) management relies on preoperative imaging.
- Contrast-enhanced MRI (ceMRI) and 18F-FDG PET-CT are key preoperative imaging modalities for CRLM.
Purpose of the Study:
- To assess trends in the utilization of preoperative imaging for CRLM in the Netherlands.
- To evaluate variations in imaging practices among hospitals and oncological networks.
Main Methods:
- Retrieved data from a nationwide auditing database for liver resections due to CRLM (2014-2018).
- Utilized multivariable logistic regression to analyze the use of ceMRI, 18F-FDG PET-CT, and combined modalities.
- Assessed trends and inter-hospital/network variations in imaging use.
Main Results:
- ceMRI use increased significantly (9.6% to 26.2%), while 18F-FDG PET-CT use decreased (28.6% to 6.0%).
- Combined ceMRI and 18F-FDG PET-CT use remained stable.
- Significant unadjusted and case-mix corrected variations in imaging modality use were observed between hospitals and networks.
Conclusions:
- Substantial variation exists in preoperative imaging for CRLM across Dutch healthcare settings.
- The trend indicates a shift towards increased MRI utilization and decreased reliance on 18F-FDG PET-CT for CRLM staging.

