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(Circulation. 2000;102:e164.)
© 2000 American Heart Association, Inc.

Images in Cardiovascular Medicine

Tricuspid Atresia With Atrial Septal Defect, Ventricular Septal Defect, and Right Ventricular Hypoplasia Demonstrated by Multidetector Computed Tomography

Teruhito Mochizuki, MD; Takashi Ohtani, MD; Hiroshi Higashino, MD; Yoshifumi Sugawara, MD; Takaharu Tsuda, MD; Michihito Sekiya, MD; Masao Miyagawa, MD; Kenji Ohmoto, RT; Junpei Ikezoe, MD

From the Department of Radiology, Ehime University School of Medicine, and Department of Cardiology, Ehime National Hospital, Japan.

Correspondence to Teruhito Mochizuki, MD, Department of Radiology, Ehime University School of Medicine, Shitsukawa, Shigenobu-cho, Onsen-gun, Ehime 791-0295 Japan. E-mail tmochi@m.ehime-u.ac.jp

A34-year-old woman was referred to our department for evaluation of her known congenital heart disease (tricuspid atresia [TA] with an atrial septal defect [ASD] and a ventricular septal defect [VSD]). She had refused surgery in her adolescence and had since been followed up medically. A contrast enhancement CT examination using multidetector CT was performed by use of 2 methods.^{1 2 3}

Figures 1 and 2 show a dynamic multislice cine scan (movie versions of Figures 1 and 2 can be found at http://www.circulationaha.org). Dynamic data were acquired for 25 seconds with breath-hold, with a multislice cine mode in the direct 4-chamber view position (left anterior oblique with the patient lying on her back and the gantry angle adjusted). The dynamic cine mode with multidetector CT can assess flow dynamics of the contrast material in 4 slices. The TA prevented flow from the right atrium (RA) to the right ventricle (RV); the ASD allowed a "flow jet" from the RA to the left atrium (LA); and the VSD allowed flow from the left ventricle (LV) to the RV.

View larger version (62K): [in this window] [in a new window]   Figure 1. Figure 1. ED and ES images of 1 of 4 direct, 4-chamber view slices (5 mm thick x 4 slices) during dynamic cine CT. Illustration of anatomic information is on right. Movie (http://www. circulationaha.org) was produced by paging images reconstructed in 0.1-second intervals (10 to 26 seconds from beginning of intravenous administration of contrast medium (300 mg iodine/mL, 2 mL/s x 20 seconds). Flow dynamics of contrast medium were visible: no flow from RA . . . [Full Text of this Article]

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