Keywords:
Performed at one institution, Observational, Prospective, Haemodynamics / Flow dynamics, Drugs / Reactions, Diagnostic procedure, Contrast agent-intravenous, CT, Radiographers, Liver, Contrast agents
Authors:
A. D. Gomes1, M. C. Couto1, R. M. S. C. Pereira1, R. M. Cardoso1, N. M. M. Neves1, R. C. M. C. R. Gaspar2, M. Santos1; 1Aveiro/PT, 2Coimbra/PT
DOI:
10.26044/ecr2020/C-14517
Conclusion
In this work, shorter arterial delays (35 seconds) presented a better aortic arterial enhancement and a reduced portal vein and hepatic parenchyma arterial enhancement. Therefore, 35 seconds scan delay resulted in an early hepatic arterial phase standard [10]. Also, the patient's left side venous puncture reduced portal vein arterial enhancement. In this institution, early hepatic arterial delays were preferred, however late hepatic arterial phases should be considered in hypervascular lesions studies [5][10] (achieved when 40 seconds delay was used).
Regarding portal venous structures enhancement, minimal diagnostic hepatic parenchyma enhancement (50 HU)[4][9] required a more considerable portal venous delay (80 seconds) with the used injection conditions. On the other hand, early portal venous delays (70 seconds) resulted in higher portal vein enhancement and better differentiation between hepatic parenchyma and portal vein vessels.
The main limitations of the study were the sample size and the fact that it was not considered the implications of the patient’s comorbidities on the structure's degree of impregnation.
An optimization of ICM dose to patient BMI or BW was desirable, namely because it could influence aortic arterial enhancement.