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- Title
The clinical application of in-house double lower limb auxiliary device in treating pelvic tumors.
- Authors
Li Xing-De; Zhao Jin; Zhai Fu-Shan; Han Li-Jie; Zhao Yue; Gao Jun-Fang; Xing-De, Li; Jin, Zhao; Fu-Shan, Zhai; Li-Jie, Han; Yue, Zhao; Jun-Fang, Gao
- Abstract
<bold>Objective: </bold>Patient positioning accuracy is critical in radiotherapy. To improve the patient positioning accuracy, a double lower limb auxiliary device has been developed to fix pelvis patients to treatment couch. A clinical study for comparing new device to conventional devices has been performed.<bold>Materials and Methods: </bold>Thirty patients with pelvic tumor were randomly divided into conventional thermoplastic membrane fixation group (conventional fixing group) and conventional thermoplastic membrane plus lower limb auxiliary fixture group (auxiliary fixing group). The setup error was acquired by simulator position alignment with center field digital radiograph reconstruction (DRR) image from treatment planning system, The correlations between the conventional fixing group and the auxiliary fixing group were analyzed using Pearson's Chi-squared test.<bold>Results: </bold>Set-up errors in conventional fixing group and auxiliary fixing group were respectively 3.8 ± 1.5 mm and 1.4 ± 0.9 mm (P< 0.02), 5.4 ± 2.5 mm and 1.2 ± 1.2mm (P < 0.001), 2.2 ± 1.3 mm and 1.9 ± 1.0 mm (P < 0.05) in the bilateral, superior-inferior and anterior-posterior direction.<bold>Conclusion: </bold>The double lower limbs auxiliary device can reduce pelvic patient positioning errors. It is very helpful in improving the daily clinical setup accuracy.
- Subjects
PELVIC bones; PATIENT positioning; RADIOTHERAPY; MEDICAL digital radiography; CHI-square distribution; TUMORS; LEG physiology; LEG; COMPUTERS in medicine; PELVIC tumors; EQUIPMENT &; supplies
- Publication
Journal of Cancer Research & Therapeutics, 2016, Vol 12, Issue 1, p43
- ISSN
0973-1482
- Publication type
journal article
- DOI
10.4103/0973-1482.151942