Related Experiment Videos
[Dose and contrast medium reduction in intravenous digital subtraction angiography by bolus sequence]
J Rückforth1, K Schürmann, D Vorwerk
1Klinik für Radiologische Diagnostik, RWTH Aachen.
Purpose:
This study evaluates the dose area product, the amount of contrast media and the examination quality of the bolus chasing technique compared to the single-step technique in intravenous digital subtraction angiography.
Material And Methods:
15 examinations each with bolus chasing and single-step technique were compared. The dose area product and the volume of contrast media were recorded. The examination quality was scored by two examiners.
Results:
With bolus chasing the volume of the administered contrast media could be decreased on average by 114 ml (43%). The difference between the dose area product of bolus chasing (722 dGy/cm2) and single-step technique (1910 dGy/cm2) was significant. No significant difference in examination quality was found.
Conclusions:
The intravenous bolus chasing technique is a practicable method. Compared to the single-step technique it allows a remarkable dose reduction and a low consumption of contrast media without restriction of examination quality.