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Proton versus photon radiotherapy for hepatocellular carcinoma: Current data and technical considerations. | LitMetric

Proton versus photon radiotherapy for hepatocellular carcinoma: Current data and technical considerations.

J Radiosurg SBRT

Department of Radiation Oncology, Massachusetts General Hospital, 55 Fruit St., Boston, MA 02114, USA.

Published: January 2023

AI Article Synopsis

Article Abstract

Radiation is an accepted standard of care for unresectable hepatocellular carcinoma (HCC), and while photon radiation is the current standard, the use of proton beam radiotherapy (PBT) is an active area of investigation given its ability to better spare uninvolved liver. Patients with HCC typically have background liver disease and many patients die of their underlying liver function in the absence of tumor progression. Early photon-based series showed promising rates of local control however the risk of non-classic radiation induced liver disease (RILD) remains relatively high and may be associated with poorer outcomes. There is a theoretical advantage to PBT in its ability to spare uninvolved liver parenchyma and potentially allow for further dose escalation. There are technical considerations for image guidance, respiratory motion management, and conformality to both PBT and photon radiotherapy that are critical to optimizing each modality. Whether the use of PBT affects clinical outcomes is the subject of the ongoing NRG Oncology GI003 trial, that randomizes patients with HCC to protons or photons. This article reviews the technical differences and literature on individual outcomes for PBT and photon radiation as well as the available comparative data.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10681146PMC

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