螺旋CT多期混合注射跟踪法在肺动脉栓塞诊断中的应用价值  

Research on the application value of spiral CT multi period mixed injection tracking method in the diagnosis of pulmonary embolism

作　　者：李小明 浦江 董宏宇 

机构地区：[1]唐山市中医医院放射科,河北唐山063000

出　　处：《中国医学装备》2016年第1期63-66,共4页China Medical Equipment

摘　　要：目的:研究螺旋CT肺动脉成像(CTPA)采用多期双流速混合注射跟踪法在肺动脉栓塞诊断中的应用价值。方法:选取50例肺动脉栓塞患者,采用随机数表法将其分为对照组与观察组,每组25例。两组患者均采用256层CTPA,其中对照组患者采用常规预注射时间密度曲线法,观察组采用对比剂混合注射跟踪法,由CT科2名医师采用"双盲法"评估两组患者成像质量以及肺动脉主干的定量分析。结果:对照组患者均获得满意的时间-密度曲线,常规5项影像质量评分结果显示两种成像方法图像质量评分比较无差异;两组患者肺动脉主干、分支成像清晰程度评分以及血管腔内CT值比较差异无统计学意义(t=1.892,t=1.952,t=1.832;P>0.05),但观察组患者CTPA检查应用对比剂剂量明显低于对照组,患者术中心率、血压变化率明显低于对照组,差异有统计学意义(t=2.315,t=1.958,t=2.982;P<0.05)。结论:CTPA肺动脉成像中采用多期双流速混合注射跟踪法可在保证图像质量以及诊断价值的基础上,有效降低检查应用对比剂剂量以及对心功能的影响,且检查相对较为简单、安全,具有临床应用及推广价值。Objective： To investigate the 256 slice spiral CT pulmonary angiography（CTPA） application value by using multiple stage double mixed injection velocity tracking method in the diagnosis of pulmonary embolism. Methods： Fifty patients with pulmonary embolism from 2014 January to 2015 January were treated in our hospital patients as the research object. Using a random number table method, all patients were randomly divided into observation group and control group, 25 cases each group of patients, two groups of patients in our hospital by imaging with 256 slice spiral CT pulmonary artery（CTPA）, the control group were treated by routine pre injection time density curve method, was used in the observation group than in mixed injection agent tracking method by two physicians, CT, using the ＂double-blind＂ assessment of two groups of patients with image quality and quantification of pulmonary artery trunk. Results： in the control group, 25 patients were satisfied with the time- density curve, the results of 5 conventional image quality scores showed no significant difference between the two imaging methods, was not statistically significant; two groups of patients with pulmonary artery trunk, branch clear imaging score and endovascular CT value had no significant difference（t=1.892, t=1.952, t=1.832; P0.05）, but the observation group patients with CTPA were examined by contrast agent dose was significantly lower than the control group, the patient＇s heart rate, blood pressure was significantly lower than the control group（t=2.315, t=1.958, t=2.982; P0.05）, with statistical significance. Conclusion： CTPA with multi period mixed double flow injection method can guarantee the tracking based on image quality and diagnostic value can effectively reduce the contrast agent dosage and application effects of cardiac function, and the examination is relatively simple, safe, has clinical value of application and popularization.

关 键 词：多层螺旋CT 多期双流混合注射跟踪 肺动脉栓塞 对比剂 

分 类 号：R816.4[医药卫生—放射医学]