ESTRO 2022 - Abstract Book

S171

Abstract book

ESTRO 2022

Results Image contrast increased with the PWT method relative to integral imaging without PWT. Using a contrast to noise ratio of 3.0 for the detection threshold, 18, 22, and 30 phantom holes were detectable with the integral, PWT, and single particle tracking image formation methods, respectively (Fig. 2a-c). PWT imaging decreased scattering artifacts at the phantom edge by 77% compared to integral imaging (Fig. 2d-e). The WET measurement error was 14% with integral imaging and <1% with the PWT method.

Conclusion Single pencil beam imaging with pixel weighting and intensity thresholding provides improved image quality relative to standard integrating proton radiography. Some scattering artifacts persist with this approach, and further work on scatter reduction is needed.

MO-0215 3DCT reconstruction from single X-ray projection using Deep Learning

E. Loyen 1 , D. Dasnoy-Sumell 1 , B. Macq 1