Workflow Information
IV Injection*
The administration of a contrast medium depends on the indication and on the delay times to be used during the examination. The patients weight and circulatory situation also play a role. In general, no more than 3 ml per kg of body weight for adults and 2 ml per kg of body weight for children should be applied.
For CTA studies (arterial phase), the principle is to keep contrast injection throughout the duration of the scan. Thus, the total amount of contrast medium needed should be calculated with the following formula:
CM = (start delay time + scan time) x flow rate.
CARE Bolus or Test Bolus may be used for optimal con- trast bolus timing. Please refer to the special protocols.
To achieve optimal results in contrast studies, the use of CARE Bolus is recommended. In case it is not avail- able, use Test Bolus. Once completed, load images into Dynamic Evaluation for calculation of Time to Peak enhancement.
*For more information regarding the general use of drugs and doses mentioned in this guide, please refer to page 2.
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