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KMID : 1151820190130050683
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Journal of the Korean Society of Radiology
2019 Volume.13 No. 5 p.683 ~ p.689
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Evaluation of the Availability of the Wide Coverage Volume Axial Mode in Pediatric Cardiac CT
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Park Ki-Seok
Kim Dong-Hyun
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Abstract
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We are trying to evaluate usefulness of Wide Coverage Volume Axial Mode by comparing and analyzing for exposure doses to patients and video quality extracted from two materials. First material is a computer tomography scanning of paediatric cardiac made by using High Pitch Mode, which is designed for diagnosing Congenital cardiac diseases. Second material is computer tomography scanning of paediatric cardiac made by using Wide Coverage Volume Axial Mode. When we did computer tomography scanning of paediatric cardiac, we used High Pitch Mode and Wide Coverage Volume Axial Mode to 50 patients of each, overall 100 patients. Also, we compared exposure doses to patients using videos got from each protocol. Then we compared video quality by calculating SNR and CNR by setting ROI of each. Not only exposure doses to patients were reduced by 13.07 %, but also SNR and CNR were improved when testing used Wide Coverage Volume Axial Mode rather than using High Pitch Mode. Wide Coverage Volume Axial Mode reduced testing time by using high-speed scanner. Furthermore, we can find out that Wide Coverage Volume Axial Mode is an useful method through improving video quality and reducing exposure doses to patients than using High Pitch Mode from ASiR-V, which is low-dose technology.
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KEYWORD
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Congenital cardiac diseases, High Pitch Mode, Wide Coverage Volume Axial Mode, exposure dose, SNR, CNR
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