双平板数字减影血管造影机在脑血管造影中的应用价值

目的探讨双平板数字减影血管造影(DSA)机在全脑血管造影中的应用价值。方法将拟行脑血管造影的患者，随机分为实验组(n=50，采用双平板DSA)和对照组(n=59，采用单平板DSA)，对比两组患者的手术时间、对比剂用量、电影序列数、摄影帧数、剂量面积乘积以及空气比释动能。结果实验组手术时间33.50(25.00，40.50)min vs 45.00(40.00，50.00)min，P < 0.001]、对比剂用量(62.68±22.40 mL vs 100.46±20.91 mL，P < 0.001)、以及电影序列数10.00(8.00，13.25)vs 14.00(12.00, 16.00)，P < 0.001]均低于对照组，差异有统计学意义。两组电影序列数均与手术时间(r=0.586，P < 0.001)、术中对比剂用量(r=0.637，P < 0.001)成正相关。两组患者在剂量面积乘积、空气比释动能、摄影帧数的差异无统计学意义(P>0.05)。结论采用双平板DSA机造影的辐射剂量与常规采用单平板DSA无明显差别，但使用双平板DSA造影，手术时间以及术中对比剂用量明显减少，有益于患者。

Application value of bi-plane DSA in cerebral angiography

ObjectiveTo analyze the application values of bi- plane digital subtraction angiography (DSA) in whole cerebral angiography.MethodsThe patients who underwent cerebral angiography were randomly divided into the experimental group (n=50, using bi-plane DSA) and the control group (n=59, using single-plane DSA). And the operation time, the amount of contrast agent, the number of movie sequences, the unmber of photographic frames, the dose area product (DAP) and air kerma (AK) of the two groups were compared.ResultsThe operation time of the experimental group 33.50 (25.00, 40.50) min vs 45.00 (40.00, 50.00) min, P < 0.001], the amount of contrast agent (62.68 ± 22.40 mL vs 100.46 ± 20.91 mL, P < 0.001), and the number of movie sequences 10.00 (8.00, 13.25) vs 14.00 (12.00, 16.00), P < 0.001] were lower than the control group. The difference is statistically significant. The two groups of patients have difference in dose area product, air kerma, and number of photographic frames. The difference was not statistically significant (P>0.05). The number of movie sequences in both groups was positively correlated with operation time (r=0.637, P < 0.001) and intraoperative contrast agent dosage (r=0.586, P < 0.001).ConclusionThere is no significant difference between the radiation dose of bi- plane DSA angiography and conventional single-plate DSA. However, the use of bi-plane DSA angiography significantly reduces the operation time and the amount of contrast agent during the operation, which is beneficial to patients.