ArticleThe international journal of cardiovascular imaging2014
Dose reduction for coronary calcium scoring with hybrid and model-based iterative reconstruction: an ex vivo study.
Article in The international journal of cardiovascular imaging, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Effect of different reconstruction algorithms on coronary artery calcium scores using the reduced radiation dose protocol: a clinical and phantom study.Quantitative imaging in medicine and surgery · 2021Article
- Computed tomography image quality of aortic stents in patients with aortic coarctation: a multicentre evaluation.European radiology experimental · 2018Article
- Accuracy of coronary artery calcium scoring with tube current reduction by 75%, using an adaptive iterative reconstruction algorithm.The British journal of radiology · 2018Article
- Influence of dose reduction and iterative reconstruction on CT calcium scores: a multi-manufacturer dynamic phantom study.The international journal of cardiovascular imaging · 2017Article
- In vitro evaluation of a new iterative reconstruction algorithm for dose reduction in coronary artery calcium scoring.Acta radiologica open · 2017Article
- Iterative reconstruction can permit the use of lower X-ray tube current in CT coronary artery calcium scoring.The British journal of radiology · 2016Article
- Feasibility study of low tube voltage (80 kVp) coronary CT angiography combined with contrast medium reduction using iterative model reconstruction (IMR) on standard BMI patients.The British journal of radiology · 2016Article
- Determination of optimal imaging settings for urolithiasis CT using filtered back projection (FBP), statistical iterative reconstruction (IR) and knowledge-based iterative model reconstruction (IMR): a physical human phantom study.The British journal of radiology · 2016Article
- Cardiovascular imaging 2014 in the International Journal of Cardiovascular Imaging.The international journal of cardiovascular imaging · 2015Review
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7 authors.
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Abstract
purposeTo determine the influence of dose reduction on coronary calcium scoring using hybrid and model-based iterative reconstruction (IR) techniques.
methodsFifteen ex vivo hearts were scanned in a phantom representing an average adult person at routine dose and three levels of dose reduction; 27, 55 and 82% reduced-dose, respectively. All images were reconstructed using filtered back-projection (FBP), hybrid IR (iDose4, levels 1, 4 and 7) as well as model-based IR iterative model reconstruction (IMR, levels 1, 2 and 3). Agatston, mass and volume scores found with iDose4 and IMR were compared to FBP reconstruction (routine dose) as well as objective image quality.
resultsWith FBP calcium scores remained unchanged at 82% reduced dose. With IR Agatston scores differed significantly at routine dose, using IMR level 3 and iDose4 level 7, and at 82% reduced dose, using IMR levels 1-3 and iDose4 level 7. The maximum median difference was 5.3%. Mass remained unchanged at reduced dose levels while volume was significantly lower at 82% reduced dose with IMR (maximum median difference 5.0%). Objective image quality improved with IR, at 82% reduced dose the CNR of iDose4 level 7 was similar to the reference dose CNR, and IMR levels 1-3 resulted in an even higher CNR.
conclusionCalcium scores were not affected by radiation-dose reduction with FBP and low levels of hybrid IR. Objective image quality increased significantly using hybrid and model-based IR. Therefore low level hybrid IR has the potential to reduce radiation-dose of coronary calcium scoring with up to 82%.
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