Abstract
Ventricular volumes and ejection fraction are often used in clinical decision making in patients with congenital heart disease (CHD). The referral diagnosis, radiation exposure and image quality of functional cardiac computed tomography (CT) in a relatively large cohort of patients of CHD has not been reported. This is a retrospective evaluation of functional CT studies performed in CHD patients from three institutions (1/2007–3/2013). Patient and scanner characteristics, radiation dose estimates and image quality were compared. Two hundred ninety-eight functional CT studies were evaluated. The most common referral diagnosis were tetralogy of Fallot (33 %), transposition complexes(24 %) single ventricle heart disease (15 %), and left sided obstruction (15 %). The reason for cardiac CT was presence of pacemaker (60 %), need for detailed coronary artery imaging (18 %), metallic artifact inC MR(12 %), evaluation of prosthetic valve function (4 %), and claustrophobia or BMI too large for the available MR scanner (6 %). 266(89.3 %) scans allowed quantification of ventricular function,25 (8.4 %) scans allowed qualitative assessment of function, and 7 (2.3 %) of the scans were non-diagnostic for functional analysis. Median DLP was 399 mGy cm (186,614), and median effective dose was 5.5 mSv (2.6, 8.5).Radiation dose and image quality varied across institutions.Cardiac CT function imaging can be performed in patients with congenital heart disease when CMR is contraindicated or has poor image quality. Radiation dose and image quality varies across institutions.
Highlights
Colin Michael Hall Kjell Havnevik Joel Heinen Jani Heino Olle Hjerne Henry Huntington Greger Hornberg Manabu Igawa Ulrik Ilstedt Ivan Ingelbrecht Sverker Jagers Liisa Jalkanen Philip James Kate Jensen Arne Jernelov Janice Jiggins Anders Jonsson Micael Jonsson P
The editors gratefully acknowledge the generous assistance of the many excellent reviewers who served Ambio—A Journal of the Human Environment between January and December 2011
Sparks Trajce Stafilov Carly Stevens Ivo Syndicus Michael Tedengren Holm Tiessen Ed Tipping James Titiloye Andrew Trant Max Troell Petra Tschakert Hakan Tunon David Turner Maria C
Summary
Colin Michael Hall Kjell Havnevik Joel Heinen Jani Heino Olle Hjerne Henry Huntington Greger Hornberg Manabu Igawa Ulrik Ilstedt Ivan Ingelbrecht Sverker Jagers Liisa Jalkanen Philip James Kate Jensen Arne Jernelov Janice Jiggins Anders Jonsson Micael Jonsson P. The editors gratefully acknowledge the generous assistance of the many excellent reviewers who served Ambio—A Journal of the Human Environment between January and December 2011.
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