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[目的]优化术中C形臂X射线机的使用参数,有效减少其对操作者和患者的X射线辐射。[方法]用人体模型模拟手术,在连续透视、脉冲透视和高对比度透视3种模式下,分别对机器内置5个固定程序(P1-P5)的剂量面积乘积(DAP)参数进行比较,并使用骨盆(P2)程序按照欧共体(CEC)影像质量标准对在脉冲透视和高对比透视模式下的骨盆透视影像进行质量评价。[结果]3种不同模式下使用同一内置程序,DAP差异有统计学意义(P<0.01);各程序在脉冲透视模式下的DAP值比连续透视模式和高对比度透视模式低(P<0.01);同一模式下的不同内置程序,DAP差异有统计学意义(P<0.01)。腰椎(P3)程序的DAP值最高,与其他内置固定程序比较差异有统计学意义(P<0.01);通过CEC影像质量标准评分分析,使用骨盆(P2)程序在脉冲透视和高对比透视模式下所得骨盆透视影像,两者影像质量的差异无统计学意义,但DAP值明显增加(P<0.01),而在脉冲透视模式下骨盆(P2)和四肢(P4)所得骨盆透视影像质量有统计学意义。[结论]正确合理地使用C形臂X射线机参数,能有效降低医护人员及患者的辐射伤害。
[Objective] To optimize the operating parameters of C-arm X-ray machine and effectively reduce the X-ray radiation to the operator and patient. [Methods] With the human body model simulation operation, the dose area product (DAP) parameters of 5 fixed procedures (P1-P5) in the machine were compared under continuous fluoroscopy, pulsatile fluoroscopy and high contrast fluoroscopy. The pelvis (P2) program evaluates the quality of pelvic fluoroscopic images in pulsed fluoroscopy and high-contrast fluoroscopy in accordance with European Community (CEC) image quality standards. [Results] The DAP values of pulsatile fluoroscopy in each program were lower than those in continuous fluoroscopy and high contrast fluoroscopy (P <0.01) with the same built-in program in 3 different modes (P <0.01) In the same model with different built-in programs, the DAP difference was statistically significant (P <0.01). The lumbar vertebra (P3) program had the highest DAP value compared with other built-in fixed procedures (P <0.01). The pelvic (P2) program was evaluated by CEC imaging quality standard in pulsed fluoroscopy and high-contrast fluoroscopy There was no significant difference in the image quality between the two pelvic radiographs, but the DAP value increased significantly (P <0.01). The pelvis (P 2) and extremity significance. [Conclusion] The correct and reasonable use of C-arm X-ray machine parameters can effectively reduce radiation injury to medical staff and patients.