摘要
Abstract
Objective: To approach the application value of 64 slice spiral computed tomography angiography(64-SSCTA) in ventricular septal defect(VSD) in children. Methods: 20 pediatric patients with Tetralogy of Fallot (TOF) suspected by clinic underwent 64-SSCT A. The original images of all the patients were reconstructed using multiplanar reconstruction (MPR) and maximum intensity projection (MIP). All of 64-SSCTA diagnostic information was compared with that of ultrasound (US). All the diagnosis of VSD was confirmed by operation. Results: Of all the 20 patients, 18 cases of VSD were confirmed by operation and 16 cases were found by 64-SSCTA, missed diagnoses 2 cases. US found all the 18 cases. For the diagnosis of VSD, if US was acted as the gold standard, the sensitivity, specificity, positive predictive value, negative predictive value of 64-SSCTA were 88. 89% . 100% ,100% , 50% , respectively. The detection rate for VSD was 80%(16/20)in 64-SSCTA and 90%(18/ 20)in US with no significant difference (X2 =0. 784, P =0. 376). The maximum diameter of VSD was on average (4. 98 + 0. 29) mm in 64-SSCTA, whereas on average (4. 96 + 0. 31)mm in US. There was no significant difference between the two methods ( t =0. 2577, P =0. 8002). Conclusion: 64-SSCTA can clearly shows morphological changes of VSD in children with TOF, and accurately assess the size of VSD above 2mm. It has great value for planning the preoperative surgery programs.关键词
室间隔缺损/体层摄影术,X线计算机/超声检查Key words
ventricular septal defect/ tomography, X-ray computed/ ultrasonography分类
医药卫生
