Publications by authors named "D Dasnoy"
Background And Purpose: Intensity Modulated Proton Therapy (IMPT) faces challenges in lung cancer treatment, like maintaining plan robustness for moving tumors against setup, range errors, and interplay effects. Proton Arc Therapy (PAT) is an alternative to maintain target coverage, potentially improving organ at risk (OAR) sparing, reducing beam delivery time (BDT), and enhancing patient experience. We aim to perform a systematic plan comparison study between IMPT and energy layer (EL) and spot assignment algorithm - Proton Arc Therapy (ELSA-PAT) to assess its potential for lung cancer treatment.
View Article and Find Full Text PDFPurpose: To improve target coverage and reduce the dose in the surrounding organs-at-risks (OARs), we developed an image-guided treatment method based on a precomputed library of treatment plans controlled and delivered in real-time.
Methods: A library of treatment plans is constructed by optimizing a plan for each breathing phase of a four dimensional computed tomography (4DCT). Treatments are delivered by simulation on a continuous sequence of synthetic computed tomographies (CTs) generated from real magnetic resonance imaging (MRI) sequences.
Introduction: Endovascular aneurysm repair (EVAR) has become a standard in the treatment of aneurysms. However, complications still occur. Endoleaks are the most common.
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- Monte Carlo (MC) algorithms can model dose calculations effectively by simulating particle interactions, but they produce noisy results that hinder clinical decisions; using a vast number of simulations can reduce noise but is time-intensive.
- This study introduces a dilated U-Net, a type of neural network, to automate the denoising process of MC dose maps, trained on proton therapy data from 35 patients across various tumor sites.
- The model successfully reduces noise in new dose maps, improving dose recovery from an average of 49.51 Gy to 55.99 Gy, while also significantly decreasing computation time from 100 minutes to under 10 seconds.
The authors report a rare case of a 51-years old woman presenting with cystic mucoid adventitial disease of the radial artery associated with a volar wrist ganglion. Imaging namely doppler sonography, magnetic resonance scanning and angio-MR was performed preoperatively because of a history of radial artery aneurysm in the opposite wrist. The radial artery was resected and the defect bridged by a venous autograft; the volar wrist ganglia was removed.
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