Verification of the couch automatic movement accuracy for Hi-ART tomotherapy.
- Author:
Yongjie HUANG
1
;
Yunlai WANG
;
Chuanbin XIE
;
Weizhang WU
Author Information
1. School of Physics and Technology, Wuhan University, Wuhan, 430072. h718795223@126.com
- Publication Type:Journal Article
- MeSH:
Humans;
Radiotherapy Planning, Computer-Assisted;
instrumentation;
methods;
Radiotherapy, Intensity-Modulated;
instrumentation;
methods;
Tomography, Spiral Computed;
instrumentation;
methods
- From:
Chinese Journal of Medical Instrumentation
2013;37(2):143-145
- CountryChina
- Language:Chinese
-
Abstract:
The QUASAR Penta-guide Phantom with fiducial markers was scanned, and the CT images were transferred to Pinnacle workstation. Skin and target volumes were contoured and transferred to TomoPlan treatment planning system. The phantom was scanned with Megavoltage CT (MVCT). MVCT images were matched to the planning CT. Automatic adjustment of treatment couch was completed. It was found that the green laser coincided with the etched center crosshairs in lateral and longitudinal directions with an error less than 2 mm. However 2 mm vertical tabletop lag was found, but could be eventually corrected. Verifications for specific patients with head and pelvic tumors were also completed, the residual setup error were analyzed. The automatic movement of tabletop after image match is satisfactory.
