Application of Imaging-Guided Radiation Therapy in Pelvic Tumor Radiotherapy / 中国医疗器械杂志
Chinese Journal of Medical Instrumentation
;
(6): 299-301, 2015.
Article
in Chinese
| WPRIM
| ID: wpr-265637
ABSTRACT
<p><b>OBJECTIVE</b>To discuss the influence of setup errors on the accuracy of pelvic cancer in IGRT, analysis setup errors and determine the CTV-to-PTV margins.</p><p><b>METHODS</b>60 pelvic cancer patients treated with Varian 23IX, all of them were performed by CBCT before and after-correction three times in the first week and after that once a week. Then, to measure the setup errors at X(left-right), Y(superior-inferior), Z(anterior-posterior) axis and E(coronal), F(sagittal), G(axial) rotation directions.</p><p><b>RESULTS</b>530 scans obtained in all, the setup errors in X, Y, Z, E, F, G were (-0.52 ± 4.18) mm, (0.73 ± 4.86) mm, (-0.36 ± 3.62) mm, (0.14 ± 1.20)degrees, (0.13 ± 1.34)degrees, (0.21 ± 1.73)degrees respectively and were much lower after correction at X, Y, Z axis, besides, CTV-to-PTV margins decrease a lot.</p><p><b>CONCLUSION</b>The accuracy of radiotherapy can be highly increased with the use of IGRT in pelvic cancer.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pelvic Neoplasms
/
Radiotherapy
/
Radiotherapy Dosage
/
Radiotherapy Planning, Computer-Assisted
/
Radiotherapy, Image-Guided
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Medical Instrumentation
Year:
2015
Type:
Article
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