Keywords:
Multicentre study, Observational, Prospective, Haemodynamics / Flow dynamics, Drugs / Reactions, Diagnostic procedure, Contrast agent-intravenous, CT, Radiographers, Liver, Contrast agents
Authors:
R. M. S. C. Pereira1, A. D. Gomes1, M. C. Couto1, M. A. SANTOS2, R. C. M. C. R. Gaspar3, R. M. Cardoso1, N. M. F. Campos3, N. M. M. Neves1, M. Santos1; 1Aveiro/PT, 2ARAZEDE/PT, 3Coimbra/PT
DOI:
10.26044/ecr2020/C-14682
Conclusion
Despite similar patients’ anthropomorphic measurements and age distribution, CT injection protocol used in multiphase hepatic CT studies, mainly injection flow rate and ICM dose, was very different between the two analysed health facilities. Those differences resulted in strong differences in structures enhancement, especially in portal venous phase acquisition.
Concerning to delays, analysed health facilities showed no differences between them neither in arterial, neither in portal venous delays. However, it was important to mention that Hospital_B showed larger distribution (higher SD) in arterial delays in relation with a better adaption of the arterial delay to patient conditions, expected when delay optimization tools were used.
In this work also was noted that delay definition methodology influenced the structures' enhancement. However, considering the differences in injection protocol between health facilities, those differences could affect this enhancement analysis.
Well-optimized pre-established delays or scan delays’ optimization tools resulted in an adequate enhancement in multiphase hepatic CT studies. Latter ones resulted in a well-personalized delay. More importance should be directed to injection protocol parameters since those could strongly influence the structures' enhancement.