Martin Glöckler1, Julia Halbfaß2, Andreas Koch2, Sven Dittrich2, Stephan Achenbach3, André Rüffer4, Susanne Ihlenburg4, Robert Cesnjevar4, Matthias May5, Michael Uder5, Oliver Rompel5. 1. Department of Pediatric Cardiology, University Hospital Erlangen, Erlangen, Germany martin.gloeckler@uk-erlangen.de. 2. Department of Pediatric Cardiology, University Hospital Erlangen, Erlangen, Germany. 3. Department of Cardiology, University Hospital Erlangen, Erlangen, Germany. 4. Department of Congenital Heart Surgery, University Hospital Erlangen, Erlangen, Germany. 5. Department of Radiology, University Hospital Erlangen, Erlangen, Germany.
Abstract
OBJECTIVES: To evaluate the feasibility, image quality and impact of 3D imaging in low-dose high-pitch dual-source computed tomography (DSCT) to assess arbitrary anatomical malformations of the aortic arch in children <1 year of age with congenital heart disease (CHD). METHODS: Between January 2010 and May 2013, DSCT was performed to assess the aortic arch anatomy in a total of 62 consecutive patients with CHD (aged 0-348 days). DSCT was used whenever conventional echocardiography was not sufficient to display the complex anatomy entirely. Image data acquisition was realized within a single cardiac cycle using prospective ECG triggering. 3D reconstruction for surgical planning was performed. Image quality was assessed retrospectively, using a 4-point scale from '1 = no artefacts' to '4 = uninterpretable'. The accuracy and impact of the 3D reconstructions was compared with intraoperative findings using a 5-point scale (from '1 = essential' to '5 = misleading'). Administered radiation exposure was evaluated. RESULTS: Imaging was successful in all patients, image quality was rated 1.34 on the 4-point scale and the impact of the 3D reconstructions for surgical planning was 2.05 on the 5-point scale. Mean dose-length product was 6.8 ± 2.6 mGy cm, and the effective dose was 0.45 ± 0.13 mSv (0.21-0.74). CONCLUSIONS: DSCT is a fast and appropriate imaging modality in the preoperative assessment of the aortic arch for surgical planning in CHD.
OBJECTIVES: To evaluate the feasibility, image quality and impact of 3D imaging in low-dose high-pitch dual-source computed tomography (DSCT) to assess arbitrary anatomical malformations of the aortic arch in children <1 year of age with congenital heart disease (CHD). METHODS: Between January 2010 and May 2013, DSCT was performed to assess the aortic arch anatomy in a total of 62 consecutive patients with CHD (aged 0-348 days). DSCT was used whenever conventional echocardiography was not sufficient to display the complex anatomy entirely. Image data acquisition was realized within a single cardiac cycle using prospective ECG triggering. 3D reconstruction for surgical planning was performed. Image quality was assessed retrospectively, using a 4-point scale from '1 = no artefacts' to '4 = uninterpretable'. The accuracy and impact of the 3D reconstructions was compared with intraoperative findings using a 5-point scale (from '1 = essential' to '5 = misleading'). Administered radiation exposure was evaluated. RESULTS: Imaging was successful in all patients, image quality was rated 1.34 on the 4-point scale and the impact of the 3D reconstructions for surgical planning was 2.05 on the 5-point scale. Mean dose-length product was 6.8 ± 2.6 mGy cm, and the effective dose was 0.45 ± 0.13 mSv (0.21-0.74). CONCLUSIONS: DSCT is a fast and appropriate imaging modality in the preoperative assessment of the aortic arch for surgical planning in CHD.
Authors: Oliver Rompel; Martin Glöckler; Rolf Janka; Sven Dittrich; Robert Cesnjevar; Michael M Lell; Michael Uder; Matthias Hammon Journal: Pediatr Radiol Date: 2016-01-06