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Abstract #2311

Dental Imaging with PETRA

Andreas J. Hopfgartner1, David M. Grodzki2, Julian Boldt3, Kurt Rottner3, Ernst Jrgen Richter3, Peter Michael Jakob1

1Experimental Physics 5, University of Wrzburg, Wrzburg, Germany; 2Siemens, Erlangen, Germany; 3Prosthodontics, Dental School, University of Wrzburg, Wrzburg, Germany

Dental imaging can offer new applications for MRI. Without ionizing radiation, carious lesions and the shape of teeth can be detected with MRI, as it has recently been shown in a couple of publications. The T2 relaxation in rigid bodies is very short (enamel 14-240s and dentine 12s-1ms, at 1.5T). In this work, an ultra-short echo time sequence (PETRA) is investigated to characterize its performance in extracted teeth at 1.5T . An in-vivo measurement is presented as well.