Publications by authors named "S Vennarini"
Image-guided treatment adaptation is a game changer in oncological particle therapy (PT), especially for younger patients. The purpose of this study is to present a cycle generative adversarial network (CycleGAN)-based method for synthetic computed tomography (sCT) generation from cone beam CT (CBCT) towards adaptive PT (APT) of paediatric patients. Firstly, 44 CBCTs of 15 young pelvic patients were pre-processed to reduce ring artefacts and rigidly registered on same-day CT scans (i.
View Article and Find Full Text PDFAdvances in therapeutic techniques and multimodal approaches have significantly improved the success rates of treatment for pediatric malignancies, with cure rates now close to 80%. This has led to an increase in long-term survival, with 0.10-0.
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- - The study focused on treating high-risk M+ medulloblastoma patients through a specific chemotherapy and radiation protocol, including multiple high-dose drugs and tailored dosages based on age and response to treatment.
- - Out of 89 enrolled patients, the median age was 8.8 years, and the study reported 5-year overall survival at 75.9% and 15-year event-free survival at 66.5%, with some negative outcomes linked to disease progression during treatment.
- - Subgroup analysis indicated that patients with Sonic Hedgehog (SHH) tumors and those with certain genetic mutations had significantly worse event-free survival rates compared to other subgroups in the study.
: Differentiating pediatric posterior fossa (PF) tumors such as medulloblastoma (MB), ependymoma (EP), and pilocytic astrocytoma (PA) remains relevant, because of important treatment and prognostic implications. Diffusion kurtosis imaging (DKI) has not yet been investigated for discrimination of pediatric PF tumors. Estimating diffusion values from whole-tumor-based (VOI) segmentations may improve diffusion measurement repeatability compared to conventional region-of-interest (ROI) approaches.
View Article and Find Full Text PDFPurpose: The aim of this study is to determine the most beneficial radiation treatment technique for pediatric patients with thoracic and abdominal neuroblastoma (NBL), through a dosimetric comparison between photon Volumetric Modulated Arc Therapy and proton Intensity-Modulated Proton Therapy treatment plans.
Materials And Methods: A retrospective analysis was conducted on a multicentre case series of 19 patients with thoracic and/or abdominal NBL who underwent radiation therapy, following the recommendations of the European protocol for high-risk NBL (HR-NBL2/SIOPEN). The prescribed dose was 21.