Application of PET imaging delta radiomics for predicting progression-free survival in rare high-grade glioma.

Autor: Ahrari S; Imagerie Adaptative Diagnostique et Interventionnelle, Institut National de la Santé et de la Recherche Médicale U1254, Université de Lorraine, 54000, Nancy, France.; Nancyclotep Imaging Platform, Université de Lorraine, 54000, Nancy, France., Zaragori T; Imagerie Adaptative Diagnostique et Interventionnelle, Institut National de la Santé et de la Recherche Médicale U1254, Université de Lorraine, 54000, Nancy, France.; Nancyclotep Imaging Platform, Université de Lorraine, 54000, Nancy, France., Zinsz A; Department of Nuclear Medicine, Centre Hospitalier Régional Universitaire de Nancy, 54000, Nancy, France., Oster J; Imagerie Adaptative Diagnostique et Interventionnelle, Institut National de la Santé et de la Recherche Médicale U1254, Université de Lorraine, 54000, Nancy, France., Imbert L; Imagerie Adaptative Diagnostique et Interventionnelle, Institut National de la Santé et de la Recherche Médicale U1254, Université de Lorraine, 54000, Nancy, France.; Nancyclotep Imaging Platform, Université de Lorraine, 54000, Nancy, France.; Department of Nuclear Medicine, Centre Hospitalier Régional Universitaire de Nancy, 54000, Nancy, France., Verger A; Imagerie Adaptative Diagnostique et Interventionnelle, Institut National de la Santé et de la Recherche Médicale U1254, Université de Lorraine, 54000, Nancy, France. a.verger@chru-nancy.fr.; Nancyclotep Imaging Platform, Université de Lorraine, 54000, Nancy, France. a.verger@chru-nancy.fr.; Department of Nuclear Medicine, Centre Hospitalier Régional Universitaire de Nancy, 54000, Nancy, France. a.verger@chru-nancy.fr.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Feb 08; Vol. 14 (1), pp. 3256. Date of Electronic Publication: 2024 Feb 08.
DOI: 10.1038/s41598-024-53693-x
Abstrakt: This study assesses the feasibility of using a sample-efficient model to investigate radiomics changes over time for predicting progression-free survival in rare diseases. Eighteen high-grade glioma patients underwent two L-3,4-dihydroxy-6-[ 18 F]-fluoro-phenylalanine positron emission tomography (PET) dynamic scans: the first during treatment and the second at temozolomide chemotherapy discontinuation. Radiomics features from static/dynamic parametric images, alongside conventional features, were extracted. After excluding highly correlated features, 16 different models were trained by combining various feature selection methods and time-to-event survival algorithms. Performance was assessed using cross-validation. To evaluate model robustness, an additional dataset including 35 patients with a single PET scan at therapy discontinuation was used. Model performance was compared with a strategy extracting informative features from the set of 35 patients and applying them to the 18 patients with 2 PET scans. Delta-absolute radiomics achieved the highest performance when the pipeline was directly applied to the 18-patient subset (support vector machine (SVM) and recursive feature elimination (RFE): C-index = 0.783 [0.744-0.818]). This result remained consistent when transferring informative features from 35 patients (SVM + RFE: C-index = 0.751 [0.716-0.784], p = 0.06). In addition, it significantly outperformed delta-absolute conventional (C-index = 0.584 [0.548-0.620], p < 0.001) and single-time-point radiomics features (C-index = 0.546 [0.512-0.580], p < 0.001), highlighting the considerable potential of delta radiomics in rare cancer cohorts.
(© 2024. The Author(s).)
Databáze: MEDLINE
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