Evaluation of Setup Errors for Tomotherapy Using Differently Applied Vacuum Compression with the Bodyfix Immobilization System / 의학물리

The aim of this study is to evaluate the patient's setup errors in TomoTherapy (Hi-Art II, TomoTherapy, USA) Bodyfix system (Medical Intelligence, Ele-kta, Schwabmuchen, Germany) pressure in the vacuum compression, depending on and were evaluated. Bodyfix immobilization system and vacuum pressure was compression applied to the patients who received Tomotherapy thoracic and abdominal area, 21 patients were selected and TomoTehpay treatment total 477 of MVCT images were obtained. The translational (medial-lateral: ML, anterior-posterior: AP, superior-inferior: SI directions) and rolling were recorded and analyzed statistically. Using Pearson's product-moment coefficient and One-way ANOVA, the degree of correlation depending on the different vacuum pressure levels were statistically analyzed for setup errors from five groups (p<0.05). The largest average and standard deviation of systematic errors were 6.00, 5.95 mm in the AP and SI directions, respectively. The largest average of random errors were 4.72 mm in the SI directions. The correlation coefficients were 0.485, 0.244, and 0.637 for the ML-Roll, AP-Vector, and SI-Vector, respectively. SI-Vector direction showed the best relationship. In the results of the different degree of vacuum pressure in five groups (Pressure range: 30~70 mbar), the setup errors between the ML, SI in both directions and Roll p=0.00 (p<0.05) were shown significant differences. The average errors of SI direction in the vacuum pressure of 40 mbar and 70 mbar group were 4.78 mm and -0.74 mm, respectively. In this study, the correlation between the vacuum pressure and the setup-errors were statistically analyzed. The fact that setup-errors in SI direction is dependent in vacuum pressure considerly setup-errors and movement of interal organs was identified. Finally, setup-errors, and it, based on the movement of internal organs in Bodyfix system we should apply more than 50 mbar vacuum pressure. Based on the results of this study, it is suggested that accuracy of the vacuum pressure and the quantitative analysis of movement of internal organs and the tumor should be studied.

Vacuum-compression therapy for ischemic disease of the extremities: Experience with 40 patients / 西安交通大学学报·英文版

Objective: To study the clinical effects of vacuum-compression therapy for ischemic disease of the extremities. Methods: A total of 40 cases of peripheral arterial disorders, including 23 thromboangiitis obliterans (31 limbs) and 17 arteriosclerosis obliterans (23 limbs), were treated by a self-made vacuum-compression therapeutic apparatus. Results: The effective rate in thromboangiitis obliterans and arteriosclerosis obliterans groups was 96.77% and 92.23%, respectively. The cuffs on the apparatus were improved to eliminate discomfort in the patients during treatment. "Rebound symptom" was observed during treatment, which had not been reported previously. Conclusion: Vacuum-compression therapy has a good prospect for treating ischemia of the extremities.

Vacuum-compression therapy for ischemic disease of the extremities: experience with 40 patients / 药物分析学报

Objective To study the clinical effects of vacuum-compression therapy for ischemic disease of the extremities. Methods A total of 40 cases of peripheral arterial disorders, including 23 thromboangiitis obliterans (31 limbs) and 17 arteriosclerosis obliterans (23 limit), were treated by a self-made vacuum-compression therapeutic apparatus. Results The effective rate in thromboangiltis obliterans and arteriosclerosis obliterans groups was 96.77% and 92.23%, respectively. The cuffs on the apparatus were improved to eliminate discomfort in the patients during treatment. "Rebound symptom" was observed during treatment, which had not been reported previously. Conclusion Vacuum-compression therapy has a good prospect for treating ischemia of the extremities.