JRSBRT 9.1, p. 83-90

Challenges of Proton Liver SBRT
Challenges and opportunities in stereotactic body proton radiotherapy of liver malignancies
Heng Li, Rachel Ger, Amol Kumar Narang, Hao Chen and Jeffrey Meyer

Stereotactic body proton radiotherapy (SBPT) has the potential to be an effective tool for treating liver malignancies. While proton therapy enables near-zero exit dose and could improve normal tissue sparing, including liver and other surrounding structures, there are challenges in implementing the SBPT technique for proton therapy, including respiratory motion, range uncertainties, dose regimen, treatment planning, and image guidance. This article summarizes the technical and clinical challenges facing SBPT, along with the potential benefits of SBPT for liver malignancies. The clinical implementation of the technique is also described for the first six patients treated at the Johns Hopkins Proton Therapy Center using liver SBPT.

Keywords: Proton, liver malignancies, stereotactic body radiotherapy

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