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Abstract #0067

Active Catheter Tracking in Air Cavities Using a Semisolid Signal Source

Stefan Alt1, Reiner Umathum1, Wolfhard Semmler1, Michael Bock1

1Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany

An active tracking catheter using a semisolid rubber as signal source was constructed to be used for MRI-guided interventions in air-filled cavities of the body. Exploiting the short relaxation time of the material and providing suppression of interfering signals, a special tracking sequence and algorithm is shown. Results from phantom and animal experiments with a tracking catheter prototype are presented.