文档介绍：JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 12, NUMBER 1, WINTER 2011
A RapidArc planning strategy for prostate with
simultaneous integrated boost
David Jolly1,2a Dineli Alahakone,1 Juergen Meyer,2
Wellington Blood & Cancer Centre,1 Capital and Coast District Health Board,
Wellington, New Zealand; Department of Physics & Astronomy,2 University of
Canterbury, Christchurch, New Zealand
david..nz
Received 24 March, 2010; accepted 26 August, 2010
Since the clinical implementation of novel rotational forms of intensity-modulated
radiotherapy, a variety of planning studies have been published that reinforce the
major selling points of the technique. Namely, comparable or even improved dose
distributions with a reduction in both monitor units and treatment times, when
compared with static gantry intensity-modulated radiotherapy. Although the data
are promising, a rigorous approach to produce these plans has yet to be established.
As a result, this study outlines a robust and streamlined planning strategy with a
concentration on RapidArc class solutions for prostate with a simultaneous inte-
grated boost. This planning strategy outlines the field setup, mended starting
objectives, required user interactions to be made throughout optimization and
post-optimization adjustments. parative planning study, with static gantry
IMRT, is then presented as justification for the planning strategy itself. A variety
of parameters are evaluated relating to both the planning itself (optimization and
calculation time) and the plans that result. Results of parative study are
in line with previously published data, and the planning process is streamlined to
a point where the RapidArc optimization time takes 15 ± minutes. Applica-
tion of this planning strategy reduces the dependence of the produced plan on the
experience of the planner, and has the potential to streamline the planning process
within radiother