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• W3042213986 abstract "Abstract Background Iodine concentration is one of the main determinants of arterial enhancement in CTA, and current low-osmolar and iso-osmolar nonionic CM for intravascular administration still come in a handful of molecules, but a relatively wide range of different iodine concentrations. This gives the opportunity to optimize CTA protocols as a function of several factors such as patient characteristics, CT technology, and CM features in an attempt to maximize the diagnostic yield of CTA examinations while considering patient safety and avoiding unnecessary extra costs. Objective To compare image quality and attenuation values of multidetector CT coronary angiography (MDCT) between iopromide 300 and iopromide 370 and to evaluate whether the higher iodine contrast material has better image quality or not. Material and Methods Patients were prospectively enrolled and were randomized into two groups (group A, 30 patients received iopromide 300, iodine flux 1.2g I/s; group B, 30 patients received iomeprol 370, iodine flux 1.48g I/s). CT attenuation values were measured in the proximal end coronary arteries,ascending aorta and main pulmonary artery. The image quality of 15 coronary artery segments was graded by cardiologist in consensus with the use of a four-point scale (1 excellent enhancement to 4 poor enhancement). Non-parametric statistical approaches were used to compare the two groups. Results No statistically significant differences were found between the mean attenuation values (302 HU for iopromide 300 and 326 HU for iopromide 370, P = 0.175) in the coronary arteries in the two groups. The mean attenuation value of the proximal ascending aorta (AA)and main pulmonary artery (MPA) was found to be 345+/-63 HU and 241+/- 89 in group A respectively, whereas the mean attenuation value in proximal ascending aorta and main pulmonary artery in group B was found to be 348+/-74 and 238+/- 50 respectively. No significant difference was found between iopromide 300 and iopromide 370 in terms of contrast enhancement at the level of great arteries, P value AA = 0.826 and P value for MPA = 0.884. 92.9% of coronary arterial segments got score (range 1–2) in group A whereas 93.6 of coronary arterial segments got score (range 1-2) in group with no statistically significant difference P value = 0.755. Conclusion With the current CT technology iopromide 300 is not inferior to iopromide 370 in terms of coronary artery attenuation values and image quality. Iopromide 300 provides similar enhancement of coronary arteries and excellent image quality as compared with iopromide 370 using identical amount of total iodine with fewer cost and less estimated adverse effects owing to low iodine concentration of iopromide 300." @default.
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• W3042213986 date "2020-03-01" @default.
• W3042213986 modified "2023-09-27" @default.
• W3042213986 title "Image quality and attenuation values of multidetector CT coronary angiography using high iodine-concentration contrast material: A comparison of the use of iopromide 300 and iopromide 370" @default.
• W3042213986 doi "https://doi.org/10.1093/qjmed/hcaa041.018" @default.
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