Meetings » 9th CTUG Meeting » Initial Experiences of Dual Source Cardiac CT

Initial Experiences of Dual Source Cardiac CT

Stuart Yates

East Anglian Regional Radiation Protection Service
Box 191,
Addenbrooke’s Hospital,
Hills Road,
Cambridge CB2 0QQ


The Siemens Somatom Definition uses two x-ray tubes and two banks of detectors to acquire CT images in only ¼ of a rotation. In this presentation we will summarise the potential benefits for Cardiac imaging, with particular reference to the effect on patient dose. At Papworth Hospital, we have been using dual source CT since early 2007. We will discuss the implications of having two tubes, both in terms of radiation protection requirements and equipment quality assurance. We will also present the results of an initial dose audit, in which patient doses are compared with those from an equivalent single-source scanner.

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