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Feasibility of a low concentration test bolus in CT angiography
W H Nijhof1, M M Jansen2, G J Jager3
1University of Twente, MIRA-Institute for Biomedical Technology and Technical Medicine, Drienerlolaan 5, 7522 NB Enschede, The Netherlands; Department of Radiology, Jeroen Bosch Hospital, Henri Dunantstraat 1, 5223 GZ, 's-Hertogenbosch, The Netherlands.
Aim:
To investigate the feasibility of using a low-concentration test bolus in abdominal aorta computed tomography (CT) angiography (CTA).
Materials And Methods:
In 10 patients referred for CTA of the abdominal aorta with a body mass index (BMI) ≤28 kg/m2, a standard test bolus of 10 ml contrast medium (CM; 350 mg iodine/ml) was compared with a low-concentration test bolus (5 ml CM; 350 mg iodine/ml; 1:1 diluted with saline) in terms of time to peak enhancement (tPE) and peak enhancement (PE).
Results:
No significant differences were found between the standard and low-concentration test bolus in terms of tPE and PE.
Conclusions:
A low-concentration test bolus (5 ml, 1:1 diluted with saline) is feasible in patients with a BMI ≤28 kg/m2.
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