Investigation of the Relationship between Aperture Use for Treating Small and Shallow Brain Lesions in Proton Therapy with Different Spot Size Variations in Three Proton Therapy Systems.

T Gray, A M Kolano, C W Liu, J D Donaghue, J B Farr,S T Chao,J H Suh, P Xia

International journal of radiation oncology, biology, physics（2023）

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摘要

We successfully quantified plan quality and evaluated results for aperture- vs. standard IMPT plans using CPBs, LPBs, and LPMBs for brain metastases. Plan quality improves the greatest with apertures applied to beams irradiating shallow tumors. Apertures may not be necessary for small, deeper tumors with IMPT.

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