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目的探讨Photoshop在数字化全下肢X线摄影图像后处理中的作用,以获得更合理、精确的全下肢X线影像。方法由放射科医师和骨科医师通过34例由数字X线摄影(DR)摄影获取的全下肢X线片测量股骨头、膝关节、踝关节中心3点连线与股骨解剖轴线的夹角(Q角)。首先将34例患者的医学数字影像通信标准(DICOM)格式全下肢X线影像打印成激光胶片,手工拼接并用胶布固定后测量,所获结果为第1组;再将这些患者的X线片的DICOM格式分别转换为联合图片专家组标准(JEPG)格式,使用Adobe公司PhotoshopCS软件对JEPG格式的图像进行无缝拼接,然后打印在一张A4纸上测量,作为第2组。结果34例患者中,退行性膝关节炎19例25个膝关节(6例为双侧膝关节病变);类风湿性关节炎12例15个膝关节(3例病变累及双侧膝关节);膝关节畸形、创伤性膝关节炎、膝关节结核各1例;本组26例患者接受了人工全膝关节置换手术治疗。DICOM格式和JEPG格式图像测量的Q角平均值分别是(6.3±0.8)°和(6.1±0.3)°,经配对t检验,t=0.022,P>0.05,差异无统计学意义。结论利用Photoshop软件可以获得优化的、无缝拼接的全下肢影像,满足了诊断和骨科的需要。
Objective To explore the role of Photoshop in the post-processing of digitized lower extremity radiography to obtain a more reasonable and accurate X-ray image of the lower extremity. Methods Radiologists and orthopedists measured the angle between the 3-point line of the femoral head, the knee joint and the ankle joint and the axis of the femur anatomy through 34 lower extremity radiographs taken by digital radiography (DR) angle). First of all, 34 patients under the DICOM format of lower extremity X-ray images were printed on laser films, hand-stitched and fixed with tape and then measured. The results obtained were Group 1; and then these patients X-ray films The DICOM formats were converted to JEPG format, and JEPG format images were seamlessly spliced using Adobe Photoshop CS software and then printed on a piece of A4 paper for the second group. Results Among the 34 patients, 19 knees were degenerative in 19 patients (6 knees were bilateral), 12 knees in 12 patients (3 knees involving both knees) in rheumatoid arthritis, Knee deformity, traumatic knee arthritis and knee tuberculosis in 1 case. The group of 26 patients underwent total knee arthroplasty. The average Q-angles of DICOM format and JEPG format were (6.3 ± 0.8) ° and (6.1 ± 0.3) °, respectively. There was no significant difference between the two methods using paired t-test, t = 0.022 and P> 0.05. Conclusion The software of Photoshop can obtain the optimized and seamless splicing images of the whole lower extremity to meet the needs of diagnosis and orthopedics.