Corporate Update
Siemens: 3D Images for Cardiovascular Imaging
Siemens: 3D Images for Cardiovascular Imaging
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By eHealth Network - 02 September 2009
A demonstration is to be given by Siemens at Siemens HealthcareAt the ESC (European Society of Cardiology) Congress 2009. This demonstration would be given on a new cardiac application for the syngo DynaCT Cardiac imaging application. During transfemoral aortic valve replacement, a heart valve prosthesis gets implanted via peripheral artery access. To position aortic valve prostheses accurately, the cardiologist must have very precise knowledge of the individual anatomy of the patient’s aorta. That’s where syngo DynaCT Cardiac comes in: During the intervention, it generates CT-like cross-sectional images on an angiographic C-arm system and offers 3D reconstruction of the aortic root. These 3D images can be overlaid on actual fluoroscopic images and provide a kind of three-dimensional roadmap for the examiner. Thus, with syngo DynaCT Cardiac, the cardiologist can position the valve prosthesis more accurate and more quickly than before.
Usually, open heart surgery is performed for the placement of an aortic valve prosthesis. The most frequent reason for this intervention is the constriction of the valve, so-called aortic valve stenosis, which occurs primarily in elderly persons. In the course of time the valve loses elasticity and no longer fully opens. This decreases the flow of blood, and the organs no longer receive a sufficient supply of oxygen. Normally, the operation requires opening the sternum. However, new procedures have been developed in which the the aortic valve prosthesis is implanted in the heart using a catheter rather than through the usual open heart surgery. This involves an intervention often performed jointly by the cardiologist and the heart surgeon. Prior to such interventions it is imperative that the cardiologist gets a comprehensive picture of the heart and vessels. Previously, this normally required imaging with CT scanners or MRI systems, which led to additional costs. It is due to the same reason that Siemens developed an application that can generate CT-like 3D images directly on an angiography system: Syngo DynaCT. The application has been continually fine-tuned and developed, so that today it combines the advantages of three-dimensional CT imaging with live X-ray imaging of the beating heart in one examination and on a single system.
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