• Ludo F M Beenen, Joanne C Sierink, Saskia Kolkman, C Yung Nio, Teun Peter Saltzherr, Marcel G W Dijkgraaf, and J Carel Goslings.
• Department of Radiology, Academic Medical Center, Amsterdam, The Netherlands l.f.beenen@amc.uva.nl.
• Acta Radiol. 2015 Jul 1;56(7):873-80.

BackgroundFor the evaluation of severely injured trauma patients a variety of total body computed tomography (CT) scanning protocols exist. Frequently multiple pass protocols are used. A split bolus contrast protocol can reduce the number of passes through the body, and thereby radiation exposure, in this relatively young and vitally threatened population.PurposeTo evaluate three protocols for single pass total body scanning in 64-slice multidetector CT (MDCT) on optimal image quality.Material And MethodsThree total body CT protocols were prospectively evaluated in three series of 10 consecutive trauma patients. In Group A unenhanced brain and cervical spine CT was followed by chest-abdomen-pelvis CT in portovenous phase after repositioning of the arms. Group B underwent brain CT followed without arm repositioning by a one-volume contrast CT from skull base to the pubic symphysis. Group C was identical to Group A, but the torso was scanned with a split bolus technique. Three radiologists independently evaluated protocol quality scores (5-point Likert scale), parenchymal and vascular enhancement and artifacts.ResultsOverall image quality was good (4.10) in Group A, more than satisfactory (3.38) in Group B, and nearly excellent (4.75) in Group C (P < 0.001). Interfering artifacts were mostly reported in Group B in the liver and spleen.ConclusionIn single pass total body CT scanning a split bolus technique reached the highest overall image quality compared to conventional total body CT and one-volume contrast CT.© The Foundation Acta Radiologica 2014 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.

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