ArticleJournal of applied clinical medical physics2026
A dosimetric analysis of a rotating gamma ray system and volumetric modulated arc therapy in retrospective replanning for primary liver cancer.
Article in Journal of applied clinical medical physics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- A dosimetric analysis of a rotating gamma ray system and volumetric modulated arc therapy in retrospective replanning for primary liver cancer.Journal of applied clinical medical physics · 2026Article
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Authors and funding
9 authors.
Funding
Abstract
backgroundThis study is a retrospective replanning study. For primary liver cancer, radiotherapy is vital for inoperable patients; however, dosimetric data comparing the rotating gamma ray system (RGS) and volumetric modulated arc therapy (VMAT) remains scarce, complicating clinical technique selection. Notably, RGS refers to a body gamma ray platform designed for extracranial stereotactic body radiotherapy (SBRT) - this is distinct from the "Gamma Knife" system, which is specifically dedicated to intracranial radiosurgery. PURPOSE: To compare the dosimetric differences between RGS and VMAT techniques in the radiotherapy of primary liver cancer.
methods30 patients with primary liver cancer, underwent both RGS and VMAT planning. Analyzed planning target volume (PTV) parameters: coverage (Target Coverage Index, TCI), max/mean/min dose (D
resultsIn this dosimetric comparison of 30 primary liver cancer patients, RGS plans demonstrated significantly higher maximum tumor dose (D
conclusionsIn radiotherapy for primary liver cancer, the rotating gamma ray system offers the characteristic of highly focused central dose with rapid peripheral dose fall-off, ensuring high tumor dose while better protecting adjacent liver tissues. VMAT provides superior conformity and homogeneity, with better control of the mean liver dose and low-dose irradiation volumes.
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