ArticleEJNMMI reports2025
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Article in EJNMMI reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
backgroundIn the last decade, immunotherapy, particularly immune checkpoint inhibitors, has revolutionized cancer treatment and improved prognosis. However, severe checkpoint inhibitor-induced liver injury (CHILI), which can lead to treatment discontinuation or death, occurs in up to 18% of the patients. The aim of this study is to evaluate the value of PET/CT radiomics analysis for the detection of CHILI. MATERIALS AND
methodsPatients with CHILI grade 2 or higher who underwent liver function tests and liver biopsy were retrospectively included. Minors, patients with cognitive impairments, and patients with viral infections were excluded from the study. The patients' liver and spleen were contoured on the anonymized PET/CT imaging data, followed by radiomics feature extraction. Principal component analysis (PCA) and Bonferroni corrections were used for statistical analysis and exploration of radiomics features related to CHILI.
resultsSixteen patients were included and 110 radiomics features were extracted from PET images. Liver PCA-5 showed significance as well as one associated feature but did not remain significant after Bonferroni correction. Spleen PCA-5 differed significantly between CHILI and non-CHILI patients even after Bonferroni correction, possibly linked to the higher metabolic function of the spleen in autoimmune diseases due to the recruitment of immune cells.
conclusionThis pilot study identified statistically significant differences in PET-derived radiomics features of the spleen and observable changes in the liver on PET/CT scans before and after the onset of CHILI. Identifying these features could aid in diagnosing or predicting CHILI, potentially enabling personalized treatment. Larger multicenter prospective studies are needed to confirm these findings and develop automated detection methods.
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