Abstract #3946

Intra-oral flexible coil for improved visibility of dental root canals in MRI

Agazi Samuel Tesfai¹, Andreas Vollmer², Ali Caglar Özen^1,3, Wiebke Semper-Hogg², Ute Ludwig¹, and Michael Bock¹

¹Dept. of Radiology, Medical Physics, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany, ²Department of Oral and Maxillofacial Surgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany, ³German Consortium for Translational Cancer Research Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany

Accurate detection of dental root canals is vital to avoid complications in endodontic therapy; however, it is difficult to locate the root canals with their sub-millimeter diameter in dental CT. To display root canals with MRI, ex-vivo and in-vivo measurements were performed with a newly developed intra-oral flexible coil and were compared to conventional head and surface coil images. Ex-vivo, a minimum SNR gain of 6 could be achieved with the intra-oral coil setup, and in a volunteer a gain of 2.7 was seen with an improved delineation of the root canals.

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