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Detector in a 7-T Magnet 1 Purpose: Materials and

By Martin S. Judenhofer, Ciprian Catana Phd, Brian K. Swann, Stefan B. Siegel, Wulf-ingo Jung Phd, Robert E. Nutt, Simon R. Cherry, Claus D. Claussen and Bernd J. Pichler


To prospectively use compact avalanche photodiodes instead of photomultiplier tubes to integrate a positron emission tomographic (PET) detector and a 7-T magnetic resonance (MR) imager. All animal experiments were performed in accordance with the University of Tübingen guidelines and the German law for the protection of animals. A compact lutetium oxyorthosilicate–avalanche photodiode PET detector was built and optimized to operate within a 7-T MR imager. The detector performance was investigated both outside and inside the magnet, and MR image quality was evaluated with and without the PET detector. Two PET detectors were set up opposite each other and operated in coincidence to acquire PET images in the step-and-shoot mode in a mouse head specimen after injection of fluorine 18 fluorodeoxyglucose

Year: 2006
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