Less Radiation During Interventions

Foto: Catheter

This technology has great potential to save radiation dose during long procedures as the patient does not need to be scanned repeatedly with the angiography system in order to track the catheter. Navigation with the MediGuide Technology from St. Jude Medical utilizes a special electromagnetic tracking procedure to determine the position of medical devices during minimallyinvasive interventions.

Siemens is the first manufacturer to integrate MediGuide Technology into its Artis zee systems to provide improved navigation of catheters during electrophysiology procedures without having to subject the patient to continuous fluoroscopy. During the intervention, a miniaturized sensor integrated into the catheter can be located by receiving electromagnetic positioning signals from the MediGuide transmitters, which are incorporated into the detector housing of the Artis zee system. The MediGuide Technology then calculates the respective position and orientation of the catheter and displays it in real-time on fluoroscopic images of the patient that were recorded earlier. To display the catheter’s position precisely, the technology also compensates for patient movement caused by respiration and heart motion.

The MediGuide Technology may provide significant benefits especially during longer interventions or examinations in the cath lab. The cardiologist no longer has to take fluoroscopic images of the patient each time the catheter is re-positioned, as is the case with current technology. As a result, less radiation and less contrast agent use is expected.

The Heart Center Leipzig, Germany, has already performed the first interventions with Artis zee and the MediGuide Technology. “The low-radiation, precise localization of the catheter tip onto the pre-recorded fluoroscopy image is a most impressive function, because the system is able to compensate the motion from heart beat and breathing,” said Professor Gerhard Hindricks, Director of the Rhythmology Department.

COMPAMED.de; Source: Siemens Healthcare