| 窦瑞雨,张丽君,李想,孙文静,范占明.个体化注射对比剂软件P3T-PA在CT肺动脉成像中的应用[J].中国医学影像技术,2016,32(10):1582~1586 |
| 个体化注射对比剂软件P3T-PA在CT肺动脉成像中的应用 |
| Application of individually optimized software P3T-PA for injection of contrast medium in CT pulmonary angiography |
| 投稿时间：2016-04-20 修订日期：2016-08-03 |
| DOI：10.13929/j.1003-3289.2016.10.028 |
| 中文关键词: 体层摄影术,X线计算机 肺动脉 血管造影术 对比剂 |
| 英文关键词:Tomography, X-ray computed Pulmonary artery Angiography Contrast media |
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| 中文摘要: |
| 目的 评估采用个体化对比剂注射软件P3T-PA进行CT肺动脉成像（CTPA）的可行性。方法 将80例临床疑似肺动脉栓塞行CTPA检查患者按随机表分为两组：P3T组（n=40），采用P3T-PA个性化对比剂注射软件，常规组（n=40），采用常规对比剂注射方案。测量各级肺动脉（肺动脉主干、左肺动脉、右肺动脉、左下肺动脉基底支、右下肺动脉基底支）CT值及CT值标准差（SD）、左心房CT值（LACTv），计算肺动脉主干（MPACTv）CT值与LACTv差值（MPACTv－LACTv）及两下肺动脉基底支SNR、CNR，记录对比剂注射流速、用量及扫描延迟时间，并进行统计学分析。结果 两组各级肺动脉CT值、SD值、MPACTv－LACTv及两下肺动脉基底支SNR、CNR差异均无统计学意义（P均>0.05）；P3T组和常规组对比剂注射流速、扫描延迟时间差异无统计学意义；[（4.76±0.50）ml/s vs（4.69±0.40）ml/s，P=0.521；（13.18±1.81）s vs（14.15±4.38）s，P=0.198]；P3T组对比剂用量较常规组少[（37.93±3.86）ml vs（49.27±6.76）ml，P<0.001]。结论 采用P3T-PA个体化对比剂注射软件行CTPA检查，操作简便，可精确计算对比剂用量，对比剂用量减少且图像质量良好。 |
| 英文摘要: |
| Objective To evaluate the application of individually optimized software P3T-PA for injection of contrast medium in CT pulmonary angiography (CTPA).Methods According to the random table, a total of 80 patients with suspected pulmonary embolism who underwent CTPA were divided into P3T group (n=40) and control group (n=40). P3T group used P3T-PA software for injection the contrast medium and control group used the routine mode. The parameters including CT value and standard deviation (SD) in the different level of pulmonary artery (main pulmonary artery, left and right pulmonary artery, left and right inferior basal segment pulmonary artery) and left atrium CT value were measured. The difference of CT value between main pulmonary artery and left atrium (MPACTv-LACTv), the SNR and CNR of bilateral inferior basal segment pulmonary artery were calculated. The amount of contrast agent, injection rate and delay time were recorded. The statistics analysis was performed for the two groups.Results There were no significant differences in CT value and SD of different level of pulmonary artery, MPACTv-LACTv, SNR and CNR between both groups (all P>0.05). The injection rate and delay time had no significant differences between P3T group and control group ([4.76±0.50]ml/s vs[4.69±0.40] ml/s,P=0.521;[13.18±1.81]s vs[14.15±4.38]s,P=0.198). The amount of contrast agent of P3T group was less than that of control group ([37.93±3.86]ml vs[49.27±6.76]ml,P<0.001).Conclusion The use of P3T-PA individually optimized software in CTPA is operated easily and accurately for calculating the contrast agent to reduce the amount of it, and can get the satisfied image quality. |
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