The prognostic value of [18F]FDG PET/CT texture analysis prior to transplantation for unresectable colorectal liver metastases

• Published in: Clinical physiology and functional imaging Vol. 45; no. 1; pp. e12908 - n/a
• Main Authors: Stern, Nadide Mutlukoca, Mikalsen, Lars Tore Gyland, Dueland, Svein, Schulz, Anselm, Line, Pål‐Dag, Stokke, Caroline, Grut, Harald
• Format: Journal Article
• Language: English
• Published: England Wiley Subscription Services, Inc 01.01.2025; John Wiley and Sons Inc
• Subjects: Adult; Aged; Colorectal Neoplasms - pathology; Computed tomography; Correlation; Disease-Free Survival; Female; Fluorine isotopes; Fluorodeoxyglucose F18; Heterogeneity; Humans; Liver; Liver Neoplasms - diagnostic imaging; Liver Neoplasms - secondary; Liver Neoplasms - surgery; Liver Transplantation; liver tumours; long‐term survival; Male; Metastases; Metastasis; Middle Aged; Original; Parameters; patient selection; Physiology; Positron emission; Positron emission tomography; Positron Emission Tomography Computed Tomography - methods; Predictive Value of Tests; radiomics; Radiopharmaceuticals; Rank tests; Retrospective Studies; Risk Factors; Survival; Texture; Time Factors; Tomography; Transplantation; Treatment Outcome; Tumor Burden; tumour heterogeneity; radiomics; patient selection; liver tumours; long‐term survival; tumour heterogeneity
• ISSN: 1475-0961; 1475-097X
• DOI: 10.1111/cpf.12908

Introduction To determine whether heterogeneity in colorectal liver metastases (CRLM) 18F fluorodeoxyglucose [18F]FDG distribution is predictive of disease‐free survival (DFS) and overall survival (OS) following liver transplantation (LT) for unresectable CRLM. Methods The preoperative [18F]FDG positron emission tomography/computed tomography examinations of all patients in the secondary cancer 1 and 2 studies were retrospectively assessed. Maximum standardized uptake value (SUVmax), metabolic tumour volume (MTV), and six texture heterogeneity parameters (joint entropyGLCM, dissimilarityGLCM, grey level varianceSZM, size zone varianceSZM, and zone percentageSZM, and morphological feature convex deficiency) were obtained. DFS and OS for patients over and under the median value for each of these parameters were compared by using the Kaplan Meier method and log rank test. Results Twenty‐eight out of 40 patients who underwent LT for unresectable CRLM had liver metastases with uptake above liver background and were eligible for inclusion. Low MTV (p < 0.001) and dissimilarityGLCM (p = 0.016) were correlated to longer DFS. Low MTV (p < 0.001) and low values of the texture parameters dissimilarityGLCM (p = 0.038), joint entropyGLCM (p = 0.015) and zone percentageSZM (p = 0.037) were significantly correlated to longer OS. SUVmax was not correlated to DFS and OS. Conclusion Although some texture parameters were able to significantly predict DFS and OS, MTV seems to be superior to predict both DFS and OS following LT for unresectable CRLM.