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Article

Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease

  • Authors:
    • Xian‑Feng Chen
    • Fan Jiang
    • Lin Li
    • Yan Chen
    • Xin Chen
    • Yan‑Yan Jiang
    • Li Xiang
    • Xiao‑Jing Ma
  • View Affiliations / Copyright

    Affiliations: Department of Radiology, Wuhan Asia Heart Hospital, Wuhan, Hubei 430000, P.R. China
  • Pages: 1177-1183
    |
    Published online on: June 13, 2017
       https://doi.org/10.3892/etm.2017.4591
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Abstract

The objective of the present study was to evaluate image quality and radiation dosage using a low-dose prospectively electrocardiogram (ECG)‑gated computed tomography (CT) protocol for dual‑source angiography in children with complex congenital heart disease. A total of 206 patients with complex congenital heart disease were equally assigned into two groups at random. The children in group A underwent low‑dose retrospective ECG‑gated CT scanning with an ECG‑pulsing technique, and group B underwent prospective ECG‑gated scanning with an ECG‑pulsing technique. Radiation dose volume computed tomography dose index (CTDI vol), dose length product (DLP) and effective dose (ED) were recorded after scanning. Raw data were transferred to workstations for post‑processing, diagnosis, grading, comparison with intra-operation findings or cardiac catheterisation, and the coincidence, false negative rate and misdiagnosis rates of groups A and B, respectively, were subsequently recorded. The results of the present study indicated that the height, age and weight of the children in the two groups exhibited no significant differences. The image quality of group A was graded as 3.94±0.08, whereas the grade for the image quality in group B was 4.05±0.08; no significant difference was detected. The coincidence rates of groups A and B were 89.37 and 88.48%, respectively; the false negative rates of groups A and B were 9.66 and 10.60%, respectively; the misdiagnosis rates of groups A and B were 0.97 and 0.92%. No significant differences between the two groups were detected. The CTDI value of group A was 3.24±1.62 mGy, the DLP value was 47.53±33.28 mGy·cm2, the ED value was 0.93±0.42 mSv. By contrast, the CTDI value of group B was 2.27±0.94 mGy, the DLP value was (27.03±17.64) mGy·cm2, and the ED value was 0.53±0.23 mSv. Significant differences were detected between the two groups (CTDI t=5.287, P<0.05; DLP t=5.523, P<0.05; ED t=8.497, P<0.05), and the radiation dose of group B was markedly decreased, compared with group A. In conclusion, the present study demonstrated that prospectively ECG‑gated scanning of dual‑source CT is an effective method of examination for dose reduction in children with congenital heart disease without impairment of image quality, which suggests that this protocol may be suitable for future application and dissemination.
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Copy and paste a formatted citation
Spandidos Publications style
Chen XF, Jiang F, Li L, Chen Y, Chen X, Jiang YY, Xiang L and Ma XJ: Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease. Exp Ther Med 14: 1177-1183, 2017.
APA
Chen, X., Jiang, F., Li, L., Chen, Y., Chen, X., Jiang, Y. ... Ma, X. (2017). Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease. Experimental and Therapeutic Medicine, 14, 1177-1183. https://doi.org/10.3892/etm.2017.4591
MLA
Chen, X., Jiang, F., Li, L., Chen, Y., Chen, X., Jiang, Y., Xiang, L., Ma, X."Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease". Experimental and Therapeutic Medicine 14.2 (2017): 1177-1183.
Chicago
Chen, X., Jiang, F., Li, L., Chen, Y., Chen, X., Jiang, Y., Xiang, L., Ma, X."Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease". Experimental and Therapeutic Medicine 14, no. 2 (2017): 1177-1183. https://doi.org/10.3892/etm.2017.4591
Copy and paste a formatted citation
x
Spandidos Publications style
Chen XF, Jiang F, Li L, Chen Y, Chen X, Jiang YY, Xiang L and Ma XJ: Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease. Exp Ther Med 14: 1177-1183, 2017.
APA
Chen, X., Jiang, F., Li, L., Chen, Y., Chen, X., Jiang, Y. ... Ma, X. (2017). Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease. Experimental and Therapeutic Medicine, 14, 1177-1183. https://doi.org/10.3892/etm.2017.4591
MLA
Chen, X., Jiang, F., Li, L., Chen, Y., Chen, X., Jiang, Y., Xiang, L., Ma, X."Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease". Experimental and Therapeutic Medicine 14.2 (2017): 1177-1183.
Chicago
Chen, X., Jiang, F., Li, L., Chen, Y., Chen, X., Jiang, Y., Xiang, L., Ma, X."Application of low-dose dual-source computed tomography angiography in children with complex congenital heart disease". Experimental and Therapeutic Medicine 14, no. 2 (2017): 1177-1183. https://doi.org/10.3892/etm.2017.4591
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