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Analysis of the relation between contrast phases and attenuation of the kidneys and liver in manual contrast injection in Computed Tomography of dogs

Grant number: 23/06891-6
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): September 01, 2023
Effective date (End): August 31, 2024
Field of knowledge:Agronomical Sciences - Veterinary Medicine - Animal Clinics and Surgery
Principal Investigator:Stefano Carlo Filippo Hagen
Grantee:Letícia Maciel Guimarães
Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil


In the Computed Tomography exam, the HU values and scanning time to obtain each contrast phase depend directly on the administration rate. The use of a contrast power injector standardizes the iodinated contrast injection rate and reduces the technician's exposure to radiation. However, contrast power injector is still not used in the Brazilian veterinary routine, leading to less accuracy and a dependence on manual injection. Thereby, analyzing possible relationships between the liver and kidneys in terms of attenuation and Hounsfield Units and analyzing the organs behavior in each contrast phase with manual administration may contribute to future research and enlightenment in the area.

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