摘要
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 value of Photoshop in image post-processing of digital total lower-limb X-ray photography, so as to obtain a more reasonable and accurate photography. Methods Digital total lower-limb X-ray photography was performed in 34 patients, and the films were printed. Then the digital imaging were converted to a total no-gap-lower-limb photography by Adobe Photoshop CS software and were printed in A4 sheets. The Q angles （ the angle between the line of femoral axis and the line of central points of femoral head, knee joint and ankle joint） were measured by radiologists and orthopedists. The films and pages were evaluated separately by radiologists and orthopedists. The Q angles were compared. Results There were 25 cases retrograde osteoarthritis of knee joints inl9 patients （6 patients were involved two sides）, 15 cases of rheumatoid osteoarthritis in 12patients, 1 case of malformation, 1 case of traumatic osteoarthritis, and 1 case of TB. Twenty-six of these patients were performed the knee joint replacement operations. The Q angle in films were （6. 3 ± 0. 8 ） o, and （6. 1 ± 0.3 ） o in sheets. There was no significant differenc between the two methods （ paired-t-test, t = 0. 022, P 〉 0. 5 ）. Conclusion Photoshop software could be used readily to obtain a optional total no-gap-lower limb photography satisfying diagnostic and operational needs of orthopedics.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2006年第12期1326-1329,共4页
Chinese Journal of Radiology
关键词
图像处理
计算机辅助
腿
放射摄影术
评价研究
Image processing,computer-assisted
Leg
Radiography
Evaluation studies
