ESTRO 2023 - Abstract Book

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ESTRO 2023

showed improved GTV D98% over VMAT but had a smaller increase. All techniques had similar target coverage. Compared to VMAT, PAT plans had reduced D0.03cc in the nominal scenario to the urethra (Fig 1B), median -0.5 Gy (p<0.01), and rectum (Fig 1C), median -1.6 Gy (p<0.01), but showed increased D0.03cc to the bladder (Fig 1D), median 0.2 Gy (p=0.04). IMPT had no significant reduction in nominal D0.03cc to the urethra and rectum. The mean DVH for the critical OAR is shown in Fig 2.