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Application of double low dose combined low flow injection in coronary dual‐source coronary computed tomography angiography
Author(s) -
Tang Zhenhua
Publication year - 2018
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/echo.14036
Subject(s) - medicine , nuclear medicine , contrast medium , artery , coronary artery disease , radiology
Purpose This study was aimed to explore the feasibility of lower tube voltage, low volumes of contrast medium, and low flow injection in prospective electrocardiogram (ECG)‐triggered high‐pitch dual‐source coronary computed tomography angiography (CCTA) for coronary artery imaging. Material and Methods A total of 140 patients with body mass index (BMI) ranging from 18.5 to 24.3 kg/m 2 and heart rate (HR) lower than 65 times/min underwent CCTA were divided randomly into two groups. The enhanced CT value and noise as well as signal‐to‐noise ratio (SNR) and contrast‐to‐noise ratio (CNR) were calculated. Coronary artery was evaluated by double‐blind method using a four‐point grading scale. Results No significant differences were found in the average enhanced CT value, noise, SNR, and CNR of all segments between the two groups ( P > .05). Meanwhile, effective radiation dosages in group A were markedly lower than those in group B ( P < .01). Conclusion The prospective ECG‐triggered high‐pitch dual‐source CCTA with low voltage, contrast medium, and flow rate injection using sinogram affirmed iterative reconstruction is feasible which can observably reduce radiation and obtain satisfactory images.