Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (26): 4822-4828.doi: 10.3969/j.issn.1673-8225.2012.26.015

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Application of 64-slice spiral CT three-dimensional post-processing image for the diagnosis of the extracardiac structural anomalies

Shen Yan-guang1, Su Lan-fang1, Wang Yun-hua2, Huang Ting2, Nie Zhong-shi3   

  1. 1Department of Radiology, Affiliated Hospital of Hainan Medical College, Haikou 570102, Hainan Province, China;
    2Department of Radiology, the Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China;
    3Department of Radiology, Hainan Provincial Nongken General Hospital, Haikou 570311, Hainan Province, China
  • Received:2011-11-22 Revised:2011-12-18 Online:2012-06-24 Published:2013-11-02
  • Contact: Wang Yun-hua, Professor, Department of Radiology, the Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China
  • About author:Shen Yan-guang★, Master, Attending physician, Lecturer, Department of Radiology, Affiliated Hospital of Hainan Medical College, Haikou 570102, Hainan Province, China shenyanguang@163.com

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Abstract:

BACKGROUND: Echocardiography (ECHO) is limitied to diagnose extracardiac structural anomalies of congenital heart disease (CHD). However, compared with ECHO, multi-slice spiral CT (MSCT) has advantages of detecting the extracardiac structural anomalies intuitively and accurately.
OBJECTIVE: To explore the influence of cardiac image quality and artifacts of extracardiac structural anomalies by 64-MSCT examination.
METHODS: Totally 23 patients after CHD surgery were reviewed. Cardiac image quality was evaluated by five-grade score before the surgery. CT, ECHO and surgical results were compared.
RESULTS AND CONCLUSION: ① The cardiac image quality in the greater than 6-year-old age group was better than that in the less than 6-year-old age group. The images of electrocardiograph-gated technique was superior to that of non-electrocardiograph-gated technique. ② In the 23 patients, there were 41 extracardiac structural anomalies. The diagnosis accurate rates of 64-MSCTA, ECHO and combination diagnosis were 97.56%, 72.97% and 100% respectively. There was significant difference between any two methods (P < 0.01). It is showed that 64-MSCT had advantages of detecting the extracardiac structural anomalies intuitively and accurately. Diagnosis range of 64-MSCTA was larger than that of ECHO. 64-MSCTA combined with ECHO could obtain better effect. There was significant difference between the accurate rates of volume rengdering imaging and multiplanar reformation imaging (P < 0.01). Minimum intensity projection was only appropriate for congenital tracheobronchial structural anomalies. So, it is indicated that there are different advantages in diagnosis of extracardiac structural anomalies by different MSCT post-processing reconstruction techniques.

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