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KMID : 1151820140080060279
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Journal of the Korean Society of Radiology
2014 Volume.8 No. 6 p.279 ~ p.285
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Optimization of the Empirical Method to the Enhancement Image of the Four Chambers at the Same Time in the Pediatric Cardiac Computed Tomography
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Park Chan-Hyuk
Lee Jae-Seung
Im In-Chul
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Abstract
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This study is to have dose reduction and minimization of excessive use of contrast medium in the pediatric cardiac computed tomography and to suggest the optimization plan to acquire the enhancement image of the 4 chambers at the same time by formulating scan delay time in empirical method with considering variables such as contrast medium injection velocity and cardiac approaching time. Quantitative, qualitative and dose assessment were carried out for 30 pediatric patients who had taken the cardiac examination. In conclusion, image enhancement in 4 chambers of the cardiac shows over 300 HU which is proper to pediatric cardiac reading by applying the empirical method with calculating scan delay time according to weight and contrast medium volume and injection velocity. Qualitative image assessments in confidence sharpness and noise have excellence qualitatively. Exposure dose to pediatrics also decreases precisely. Therefore this study is judged to take a important role of making optimization images with advantages of dose reduction and less side effects caused by it's excessive use in clinic.
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KEYWORD
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Contrast medium(CM), Cardiac CT angiography(CTA), Empirical method, Radiation exposure
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