2016年 · 第25卷第01期

A barcode is a graphic identifier that arranges a plurality of black bars and blanks with different widths according to certain coding rules to express a set of information. A common one-dimensional barcode is a parallel line pattern formed by black bars (bars for short) and white bars (empty for short) with large differences in reflectivity. Barcode is by far the most economical and practical automatic recognition technology^[1]。 Barcode technology has the characteristics of fast input speed, high reliability, good ease of use and high cost performance. Barcodes have long been widely used in all sectors of society, but they are not widely used in hospitals. At present, most of the barcode technology used in hospitals is to print multiple self-adhesive barcode labels for each patient, and paste them on various diagnostic and therapeutic materials of patients^[2,3]。 This method has greatly improved the work efficiency and accuracy compared with the previous method of manually typing the keyboard by staff. However, after all, the barcode label has to be pasted manually during the operation, which inevitably causes human errors, and the patient information after the label is pasted is irregular and unattractive.

With the continuous development of radiotherapy equipment and technology, three-essence radiotherapy with precise positioning, precise planning and precise treatment has been widely used in clinical practice, and radiotherapy colleagues have made continuous efforts and research to realize precise radiotherapy. Fixation of body position and design of therapeutic position is an extremely important link in achieving precise radiotherapy^[1]。 Because of the influence of breathing, body weight, skin pulling, arm lifting and other factors, the repeatability of positioning in the whole treatment process of chest tumor is poor^[2]Therefore, a comfortable therapeutic posture design and precise posture fixation technique are critical^[3]。 In the case of different opinions on postural fixation devices, the author studied the accuracy of positioning error between conventional postural fixation devices and combined fixation devices (arm bracket and vacuum pad fixation) in chest tumors.