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KMID : 1151820220160010007
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Journal of the Korean Society of Radiology
2022 Volume.16 No. 1 p.7 ~ p.14
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A Study on Radiation Dose and Image Quality using Dual Energy Computed Tomography ECG Gating High Pitch Chest Pain Protocol Mode
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Kim Gyeong-Rip
Sung Soon-Ki
Kim Chang-Hyeun
Kwak Jong-Hyeok
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Abstract
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This study compared the aortic root image by using the ECG gating and non-ECG gating methods. We observed the presence or absence of progression of the aortic root image in the images examined by the high pitch (flash) chest pain protocol method and in the patients tested without ECG gating by the conventional method. The AAPM phantom was scanned by using high pitch (flash) chest pain protocol and general chest pain protocol. CTDI values were compared. By ECG gating, the blurring of ascending aorta was significantly reduced compared to the existing non-ECG gating test method, and the image quality of the aortic root was improved. Within the parametar range that did not show differences in noise, uniformity, and high contrast resolution, CTDI values were lower when tested with the high-pitch chest pain protocol. It was found that there is an advantage in dose reduction, and if it is applied and applied to diagnostic fields such as dissection using the dose reduction mode in the cardiac field, it is a very important test for patients who need rapid diagnosis and prompt treatment as well as a dramatic reduction in exposure dose. It is presumed to be a method.
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KEYWORD
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ECG gating, , high pitch(flash) chest pain protocol, ascending aorta dissection, CTDI
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