Journal of the Formosan Medical Association
Volume 107, Issue 5 , Pages 371-380, May 2008

Usefulness of 3D Reconstructed Computed Tomography Imaging for Double Outlet Right Ventricle

  • Shyh-Jye Chen

      Affiliations

    • Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
    • ,
  • Ming-Tai Lin

      Affiliations

    • Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
    • ,
  • Kao-Lang Liu

      Affiliations

    • Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
    • ,
  • Chung-I Chang

      Affiliations

    • Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
    • ,
  • Hsu-Yi Chen

      Affiliations

    • Department of Diagnostic Radiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
    • ,
  • Jou-Kou Wang

      Affiliations

    • Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
    • ,
  • Wen-Jeng Lee

      Affiliations

    • Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
    • ,
  • Yuk-Ming Tsang

      Affiliations

    • Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
    • Corresponding Author InformationCorrespondence to: Dr Yuk-Ming Tsang, Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, 7 Chung-Shan South Road, Taipei 100, Taiwan
    • ,
  • Yiu-Wah Li

      Affiliations

    • Department of Medical Imaging, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan

Received 16 September 2007; received in revised form 18 October 2007; accepted 12 February 2008.

Background/Purpose

To evaluate the value of 3D reconstructed computed tomography (CT) imaging for patients with double outlet right ventricle (DORV).

Methods

CT images were obtained preoperatively from 17 patients who ranged in age from 5 days to 5 years. Reconstructed 3D images were created using gradient-shading surface rendering, which allowed partial subtraction of the anterior sections of the virtual heart to view the interior. Interpretations of CT, echocardiography and cine-cardioangiography were compared and verified from surgical findings, autopsy, and consensus upon review of all imaging and diagnostic tests.

Results

Three subaortic, seven subpulmonary, six non-committed, and one double-committed subtypes of ventricular septal defect (VSD) were observed. The 3D electron beam CT images provided good delineation of the spatial relationship inside the heart. The range of diagnostic accuracy for all VSD types in DORV was 88-100% for 3D CT, 71-94% for echocardiography, and 60-100% for cine-cardioangiography. In comparison, 3D CT offered better diagnostic accuracy for all variants of DORV.

Conclusion

3D constructed CT imaging is a good modality for differentiating VSD type in DORV. It allowed us to directly evaluate the inside of cardiac chambers for the right ventricular outlet, great arterial root, and determine the VSD relationships.

Key Words:  computed tomography , congenital heart disease , double outlet right ventricle

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PII: S0929-6646(08)60102-3

doi:10.1016/S0929-6646(08)60102-3

Journal of the Formosan Medical Association
Volume 107, Issue 5 , Pages 371-380, May 2008

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