文档介绍：Radiotherapy and Oncology 93 (2009) 259–265
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Radiotherapy and Oncology
journal homepage:
IMRT
Is a single arc sufficient in volumetric-modulated arc therapy (VMAT)
plex-shaped target volumes?
Matthias Guckenberger *, Anne Richter, Thomas Krieger, Juergen Wilbert, Kurt Baier, Michael Flentje
Department of Radiation Oncology, University of Wuerzburg, Wuerzburg, Germany
article info abstract
Article history: Purpose: pare step-and-shoot intensity-modulated radiotherapy (ss-IMRT) with volumetric-mod-
Received 14 May 2009 ulated arc therapy (VMAT) plex-shaped target volumes with a simultaneous integrated boost
Received in revised form 5 July 2009 (SIB).
Accepted 2 August 2009
Materials and methods: This retrospective planning study was based on 20 posed of prostate
Available online 10 September 2009
cancer (n = 5), postoperative (n = 5) or primary (n = 5) radiotherapy for pharyngeal cancer and for cancer
of the paranasal sinuses (n = 5); a SIB with two or three dose levels was planned in all patients. For each
Keywords:
patient, one ss-IMRT plan with direct-machine-parameter optimization (DMPO) and VMAT plans with
Step-and-shoot intensity-modulated
one to three arcs (SmartArc technique) were generated in the Pinnacle planning system.
radiotherapy
Volumetric-modulated arc therapy Results: Single arc VMAT improved