Bolus-tracking techniques

When a true angiogram is needed we use a bolus tracking technique. Our protocol is to do serial low mAs scans on the vessel of interest (in the case of... 

Bae KT (2005) Test-bolus versus bolus-tracking techniques for CT angiographic timing. Radiology 236 369-370 author reply 370... 

Cademartiri F, Nieman K, van der Lugt A, Raaijmakers RH, Mollet N, Pattynama PM, de Feyter PJ, Krestin GP (2004b) Intravenous contrast material administration at 16-detec-tor row helical CT coronary angiography test bolus versus bolus-tracking technique. Radiology 233 817-823... 

As an alternative to bolus tracking, a smartscan type function can be used, in which a test bolus is administered to determine the scan delay [64]. A region of interest is selected, typically in the proximal ICA, and 10 mL of contrast is injected. This region is scanned continuously using a low mAs/kVp technique, and the prep delay is chosen as the time corresponding to... 

In addition to injection duration, variable cardiac output parameters of individual patients will have to be addressed. In principle, the two methods to assess the contrast arrival are test bolus techniques and so-called bolus tracking. Both approaches measure Carr and therefore adapt for varying cardiac output. The... 

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