经胸超声心动图与64排CT心血管造影评价法洛四联症肺动脉狭窄的价值比较

目的探讨经胸超声心动图与64排CT心血管成像对评价法洛四联症肺动脉狭窄的应用价值,64排CT是否优于常规超声心动图。方法 27例法洛四联症患者术前均经过经胸超声心动图与64排CT心血管成像检查,同时观察肺动脉狭窄情况,再与术中病理进行比较。结果经胸超声心动图诊断肺动脉狭窄、右室流出道狭窄、肺动脉瓣狭窄符合率均高于64排CT心血管造影（χ2值分别为15.06、6.13和5.14）,P值均〈0.05,有统计学意义,而对于肺动脉及其分支的发育情况（χ2值为0.50）,P〉0.05,无统计学意义。结论经胸超声心动图检查对法洛四联症肺动脉狭窄特别是右室流出道狭窄和肺动脉瓣狭窄的评估优于64排CT。

Comparative Study of Transthoracic Echocardiography and 64-slice Spiral CT Angiocardiography in the Diagnosis of Pulmonary Stenosis in Tetralogy of Fallot

Objective To discuss the value of 64-slice spiral CT angiocardiography（64-SCTA）and transthoracic echocardiography（TTE）in the diagnosis of pulmonary stenosis in tetralogy of Fallot.Methods 27 cases of tetralogy of Fallot which were proved by surgery in our hospital from August 2011 to December 2012 were collected.All of these patients underwent 64-SCTA and TTE at the same time before operation,and both of them were evaluated the type and degree of pulmonary stenosis.Then,the operation results were taken as diagnostic standard to evaluate the diagnostic accuracy of these two methods.Results The coincidence rates in the diagnosis of pulmonary stenosis,outflow tract stenosis,pulmonary valve stenosis by TTE were higher than the 64-SCTA（chi-square value was 15.06,6.13,5.14 respectively,P0.05）.There was no statistical significance in the pulmonary artery and its branches development（chi-square value was 0.50,P0.05）.Conclusion Comparing with the 64-SCTA,echocardiography has advantages in the diagnosis of pulmonary stenosis in tetralogy of Fallot,especially in the diagnosis of the stenosis of right ventricular outflow tract and pulmonary valve.