Objective:To design a machine for trauma patients to be weighed and translocation, increase the accuracy of clinical drug using, reducing secondary damage and improve the life quality.Methods: The machine which consists of mechanical system, driving system, weighing system, power supply system, control system. It has the advantages of high efficiency and safety, simple operation, easy translation motion.Results:It resolved the problems in weighing and translocation.Conclusion: The machine reduces the labor intensity of medical staff, and avoids the secondary damage in the transportation process at the same time. With its good effect, the machine obtains very high value in clinical application.

Objective: A correction factor was proposed to improve the accuracy of dose calculation in conventional radiotherapy when filed matching technique was used. Methods:Use the linear accelerator with independent collimator to implement semi-field irradiation under different equivalent-length field. Measure the dose and compare it with the calculation dose. Obtain a correction factor which change follow the equivalent-length through data fitting. Results:There is relationship to indicate the correction factor increase if the field area enlarge;the calculation dose will be close to the measure dose, and the accuracy will improve by correcting;Conclusion:The clinical dose of semi-field irradiation can be calculated by an equivalent square field technique , and then multiplied by the correction factor. it is a simple method to improve the accuracy of dose calculation in conventional radiotherapy by using semi-filed correction factor when filed matching technique was used.