Improving a scissor-action couch for conformal arc radiotherapy and radiosurgery.

Abstract:

:We have developed a method to improve the setup accuracy of a Varian Clinac 6/100 couch for delivering conformal arc therapy using a tertiary micro multileaf collimator (MLC) system. Several immobilization devices have been developed to improve the mechanical stability and isocenter alignment of the couch: turn-knob harnesses, double-track alignment plates, and a drop-in rod that attaches the couch to the concrete floor. These add-on components minimize the intercomponent motion of the couch's scissor elevator, which allows consistent treatment setup. The accuracy of our isocenter couch alignment is an improvement over the above devices, within 1 mm of their accuracy. The couch has been used with over 15 patients and with over 50 modulated conformal arc treatment deliveries at our institution.

journal_name

J Appl Clin Med Phys

authors

Li K,Yu CX,Ma L

doi

10.1120/jacmp.v5i3.2026

keywords:

subject

Has Abstract

pub_date

2004-07-01 00:00:00

pages

62-5

issue

3

issn

1526-9914

journal_volume

5

pub_type

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