Abstract #3545

Sato H, Iida H, Iwadate Y, Tsukamoto T, Koshino K, Teramoto N, Yamamoto A, Enmi J, Goto T, Watabe H

FDG-PET is widely used for clinical screening, but its sensitivity for small cancer is insufficient. Previously reported combined PET-MR approaches have same limitations and require massive developments. We propose a cost-effective registration technique of a high sensitive endoscopic scintillation probe on MR images using optical sensor and infrared reflective marker attached on subjects. Dummy probe with point signal source was intubated into the esophagus of a swine and also into a simulated phantom to evaluate accuracy and repeatability of actual locations for MRI and PET fusion imaging. Maximum S.D. of 4mm indicated proposed approach should be feasible.