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In standard radiomics studies the features extracted from clinical images are mostly quantified with simple statistics such as the average or variance per Region of Interest (ROI). Such approaches may smooth out any intra-region heterogeneity and thus hide some tumor aggressiveness that may hamper predictions.

The levels and composition of sphingolipids and related metabolites are altered in aging and in common disorders such as diabetes and cancers, as well as in neurodegenerative, cardiovascular, and respiratory diseases.

(Chemo)-radiotherapy (RT) is the gold standard treatment for patients with locally advanced lung cancer non accessible for surgery. However, current toxicity prediction models rely on clinical and dose volume histograms (DVHs) and remain unsufficient.

La récidive biologique d’un adénocarcinome de prostate après irradiation est définie selon les critères de Phoenix. Il est nécessaire de prouver une récidive histologique par des biopsies. Le but de cette étude est d’analyser la localisation des récidives et de comparer les biopsies prostatiques transpérinéales en saturation et ciblées, aux index tumoraux (IT) défini sur l’IRM et par le TDM-TEP à la 18F-choline (TEPc).

Plusieurs modèles existent pour prédire le risque d’envahissement ganglionnaire pelvien mais aussi le risque de récidive biologique après prostatectomie dans le cancer de prostate localisé. Ces scores ont été validés dans des populations en majorité caucasienne. Peu de données sont disponibles pour les populations d’ascendance africaine.

Personalized medicine aims at offering optimized treatment options and improved survival for cancer patients based on individual variability. The success of precision medicine depends on robust biomarkers.

The positron emitter 52gMn is used for the Positron Emission Tomography – PET imaging.In this work we investigate the nuclear reactions for production of 52gMn and 54Mn induced by deuteron beams on natural chromium targets at energies up to Ed = 28 MeV using the stacked-foils activation technique.

Purpose: The aim of this study was to compare retrospectively 18F-DOPA PET/CT versus 68Ga-DOTANOC PET/CT in a group of patients affected by midgut NET.

Patients and methods: Patients with histologically proven grade 1 or grade 2 midgut NET were explored after injection of 150 MBq of 68Ga-DOTANOC and 210 MBq of 18F-DOPA. The PET/CTs were analyzed visually and semiquantitatively at the patient level, regional level (7 defined regions), and lesion level (maximum of 5 lesions/organ).

Image-guided radiotherapy (IGRT) has become a standard irradiation technique to improve the clinical outcome of patients in terms of toxicity and local control due to better targeting of radiation during the irradiation fraction. Positioning imaging systems, whether embedded or not, such as kV for 2×2D acquisitions and especially kVCBCT for 3D acquisitions are however irradiating in a large volume including the target volume but also healthy tissue, with a theoretical risk of increased toxicity and second cancer.