Image quality of ultra-low-dose dual-source CT angiography using high-pitch spiral acquisition and iterative reconstruction in young children with congenital heart disease

Journal of Cardiovascular Computed Tomography
Minwen ZhengJian Li

Abstract

Obtaining diagnostic CT image quality with ultra-low radiation dose in young children with congenital heart disease remains challenging. We evaluated the feasibility and image quality of prospectively electrocardiogram (ECG)-triggered high-pitch spiral acquisition with iterative reconstruction for pediatric cardiovascular CT angiography. Sixty-two consecutive pediatric patients younger than 2 years with congenital heart disease underwent prospectively ECG-triggered high-pitch spiral dual-source CT acquisition. Patients were randomly assigned into 2 groups: full tube current (40-70 mAs) scans with filtered back projection reconstruction (group A) and half tube current (20-35 mAs) scans with sinogram-affirmed iterative reconstruction (group B). Attenuation, noise, signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and subjective image quality were compared between the 2 groups. Effective radiation dose was also estimated for both groups. No significant difference was found in the attenuation, image noise, SNR, and CNR between the 2 groups in the same evaluated anatomic regions, whereas the attenuation and image noise were slightly lower, and the SNR and CNR were slightly higher in group B. No significant difference was f...Continue Reading

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Citations

Nov 4, 2015·Journal of Cardiovascular Computed Tomography·Ronald BooijMohamed Ouhlous
Jul 27, 2015·Insights Into Imaging·S M DietzT W Kuijpers
Jun 20, 2015·Journal of Cardiovascular Computed Tomography·Christopher NaoumJonathon Leipsic
Feb 14, 2015·Journal of Cardiovascular Computed Tomography·Tim Leiner, Suhny Abbara
Aug 7, 2014·Circulation. Cardiovascular Interventions·Shikhar AgarwalSamir R Kapadia
Jan 24, 2019·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Sun Hwa HongUNKNOWN Asian Society of Cardiovascular Imaging Congenital Heart Disease Study Group
Jan 5, 2021·The International Journal of Cardiovascular Imaging·Jannika Dodge-Khatami, Dilachew A Adebo
Jul 17, 2021·Revista Portuguesa De Cardiologia : Orgão Oficial Da Sociedade Portuguesa De Cardiologia = Portuguese Journal of Cardiology : an Official Journal of the Portuguese Society of Cardiology·Marta António
Nov 5, 2021·Pediatric Radiology·LaDonna J MaloneLorna P Browne

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