Assessment of dose exposure and image quality in coronary angiography performed by 640-slice CT: a comparison between adaptive iterative and filtered back-projection algorithm by propensity analysis

Purpose This study was performed to confirm, by propensity score matching, whether the use of adaptive–iterative dose reduction (AIDR 3D) with a built-in automatic exposure control system provides clinical and dosimetric advantages with respect to the traditional filtered back-projection (FBP) algor...

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Bibliographic Details
Published in:Radiologia medica 2014-08, Vol.119 (8), p.642-649
Main Authors: Di Cesare, Ernesto, Gennarelli, Antonio, Di Sibio, Alessandra, Felli, Valentina, Splendiani, Alessandra, Gravina, Giovanni Luca, Barile, Antonio, Masciocchi, Carlo
Format: Article
Language:English
Subjects:
Aged
Algorithms
Coronary Angiography - methods
Diagnostic Radiology
Female
Humans
Imaging
Interventional Radiology
Male
Medicine
Medicine & Public Health
Middle Aged
Neuroradiology
Propensity Score
Prospective Studies
Radiation Dosage
Radiobiology And Safety
Radiographic Image Interpretation, Computer-Assisted
Radiology
Tomography, X-Ray Computed
Ultrasound
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Summary:Purpose This study was performed to confirm, by propensity score matching, whether the use of adaptive–iterative dose reduction (AIDR 3D) with a built-in automatic exposure control system provides clinical and dosimetric advantages with respect to the traditional filtered back-projection (FBP) algorithm without automatic exposure modulation. Materials and methods A total of 200 consecutive patients undergoing coronary computed tomography (CT) angiography on a 640-slice CT scanner were studied. A protocol with exposure parameters based on patient body mass index (BMI) and with images reconstructed using FBP (group A) was compared with a protocol with images acquired using tube current decided by an automatic exposure control system and reconstructed using AIDR (group B). Mean effective dose and image quality with both objective and subjective measurements were assessed. Results Mean effective dose was 23.6 % lower in group B than in group A (2.56 versus 3.34 mSv; p  
ISSN:0033-8362
1826-6983
DOI:10.1007/s11547-014-0382-3