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目的:探讨两种造影剂注射方案对大口径放疗模拟CT扫描效果的影响。方法:采用两种造影剂注射方案——一种方案是注射造影剂量60ml,注射速度为1.5ml/s;另一种方案为造影剂量为体重(kg)×1.2(最大量为80ml),注射速度为1.4ml/s至1.8ml/s,CT扫描部位为三类——颈组,胸组,腹盆组。结果:两种造影剂注射方案在颈组、胸组、腹盆组强化密度均有显著统计学意义(P<0.01)。结论:大口径放疗CT模拟机增强效果因素。
OBJECTIVE: To investigate the effects of two contrast media injection protocols on CT scanning of large-caliber radiotherapy. Methods: Two contrast media injection regimens were used - one regimen was injection of 60 ml of injection at a rate of 1.5 ml / s and the other was injection at a dose of (kg) x 1.2 (maximum of 80 ml) Speed of 1.4ml / s to 1.8ml / s, CT scan site for the three categories - neck group, chest group, abdominal basin group. Results: There was a significant difference in the intensified density between the two contrast media injection programs in the cervical, thoracic and abdominal pelvic groups (P <0.01). Conclusion: Large-aperture radiotherapy CT simulator enhances the effect of factors.