Superior Vena Cava Syndrome

Intravascular contrast medium is essential for enhancement of vessels and parenchyma. In this way the relation between vessels and tumours can be detected. Factors that influence the time required for a contrast bolus are the cardiac output of a patient, body weight, hydration status and the condition of the vessels. When a main vessel is occluded because of thrombosis, embolia or trauma a collateral circulation will form. The blood is supplied to the organs via sidebranches. This has an effect on the contrast arrival and in case of a fixed scan delay time this will result in mis-timing. Bolus triggering is a very reliable method to determine the scan delay. SureStart® is standard on the Toshiba Aquilion 16 systems. A Region of Interest is placed in a vessel where the enhancement is not only measured, but also monitored real time. When the right level of enhancement is reached, the helical scan will start. In this special case SureStart® ensured that the right scan delay was used despite of the collateral circulation.

Volume rendered images showing the collateral circulation
Volume rendered images showing the collateral circulation

This article was first published in the VISIONS, issue 6/2004, a publication of Toshiba Medical Systems


Read all latest stories

Related articles


Sponsored • Computed Tomography

Mobile Imaging Solutions: Clinical Confidence Anywhere

To bridge new equipment installations in radiology, temporary high workloads, or long-term additional capacity, Canon Medical provides mobile solutions according to customers’ needs and wishes.


Video • Redesign & refresh

Canon Medical updates Aplio ultrasound systems

Canon Medical announced the commercial launch of the Aplio i-series / Prism Edition, a complete redesign of its premium ultrasound series. In addition, Aplio a-series, Canon Medical’s…


Sponsored • All-in-one imaging trailer

Mobile solutions for the COVID-19 frontline

With public health issues continuing to make daily mainstream news headlines across the world, it is clear how much change the healthcare environment is going through. Not only are there existing…

Related products

Subscribe to Newsletter