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A Method to Estimate Accumulated Dose Uncertainties Induced by Deformable Image Registration Discrepancies for Adaptive Proton Therapy
(2020)Purpose: We propose a model for estimating dosimetric uncertainties as a consequence of discrepancies in the Deformable Image Registration (DIR) process when accumulating dose for adaptive Pencil Beam Scanned (PBS) proton therapy. Methods: Three components are considered: (i) deformable vector fields (DVFs) derived from different DIR algorithms; (ii) a patient specific linear regression model of DVF uncertainty, and (iii) dose gradients ...Conference Poster -
DEM generation and cryospheric investigations with KAPRI, a ground-based fully polarimetric interferometric radar
(2023)Radar remote sensing is a commonly used technique for Earth Observation and studying the natural environment. Mainly, two techniques are used to extract the information contained in the radar signal: polarimetry and interferometry. Polarimetry provides information on the different scattering mechanisms that take place within the resolution cell and describe how the signal interacts with the natural medium. On the other hand, interferometry ...Conference Poster -
KAPRI - the Polarimetric and Interferometric Bistatic Real- Aperture Ku-Band Radar for Environmental Information Retrieval
(2023)Radar observations that combine polarimetry and interferometry allow an enhanced characterisation of the natural environment and its processes. Fully polarimetric imaging provides data on scattering mechanisms present in the resolution cell and thus on the structure of the natural medium. Furthermore, differential interferometry allows the monitoring of displacements which occur on the line-of-sight component, focusing on changes caused ...Conference Poster -
Feasibility study to achieve hypofractionated proton therapy within a single breath- hold for lung cancer
(2021)Conference Poster -
Use of momentum cooling to achieve flash dose-rates even for low-energy beams in cyclotron-based proton therapy facilities
(2022)Background and Aims: In proton therapy, the potential high dose-rates (FLASH) for cancer treatment is currently being explored. If performed with cyclotrons however, energy degradation is required. If performed upstream (using a degrader plus and energy/momentum selection system (ESS)), large beam losses result, whilst if performed downstream, just before the patient, the beam width is substantially compromised. In both cases, the net ...Conference Poster