Contrast Medium Volume Optimization in Abdominal CT on Basis of Lean Body Weight
Rodrigues, L; Sampaio, R; Coimbra, M
Date: 2013
Journal
American Journal of Biomedical Engineering
Publisher
Scientific and Academic Publishing
Publisher DOI
Abstract
Computed tomography (CT) in abdominal imaging has undergone great advances in recent years. The
administration of iodinated contrast media (CM) has evolved along with the evolution of the CT equipment. The most
common method for calculation of the CM volume in abdominal CT is based on total body weight (TBW), but in this way
some ...
Computed tomography (CT) in abdominal imaging has undergone great advances in recent years. The
administration of iodinated contrast media (CM) has evolved along with the evolution of the CT equipment. The most
common method for calculation of the CM volume in abdominal CT is based on total body weight (TBW), but in this way
some patients get a lower dose and some other patients get a higher dose that the optimal dose they need. In the literature there
are many formulas to calculate the CM volume to be administered in abdominal CT, but practice shows that the variability of
enhancement is wide. The main objective of this study is to verify that the volume of intravenous CM in abdominal CT
calculated on basis of lean body weight (LBW) allows good liver enhancement with small amplitude of variation around the
mean, that is, with less variability in enhancement than CM volume calculated on basis of TBW. In conclusion the calculation
of the volume of CM on basis of LBW translates into a low variability of liver enhancement–25.50 HU. In our results 96.05%
of sample belongs to a good hepatic enhancement. If we stratify sample by groups of BMI, we also verify no significative
differences between slims and fat patients when analysed mean hepatic enhancement.
Institute of Medical Education
Collections of Former Colleges
Item views 0
Full item downloads 0