Development and testing of a restraint free small animal SPECT imaging system with infrared based motion tracking

A. G. Weisenberger, B. Kross, S. S. Gleason, J. Goddard, S. Majewski, S. R. Meikle, M. J. Paulus, M. Pomper, V. Popov, M. F. Smith, B. L. Welch, R. Wojcik

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations


The development and initial evaluation of a high-resolution single photon emission tomography (SPECT) based system to image the biodistribution of radiolabeled tracers such as Tc-99m and I-125 in unrestrained/un-anesthetized mice. An infrared (IR) based position tracking apparatus has been developed and integrated into a SPECT gantry. The tracking system is designed to measure the spatial position of a mouse's head at a rate of 10-15 frames per second with sub-millimeter accuracy. The High resolution, gamma imaging detectors are based on pixellated Nal(Tl) crystal scintillator arrays, arrays of compact position-sensitive photomultiplier tubes and novel readout circuitry for lower device cost while retaining high spatial resolution. Two SPECT gamma camera detector heads based on a 4 × 8 array of Hamamatsu R8520-C12 position sensitive photomultiplier tubes have been built and installed onto the gantry. The IR landmark-based pose measurement and tracking system is under development to provide animal position data during a SPECT scan. The animal position and orientation data acquired by the IR tracking system is used for motion correction during the tomographic image reconstruction.

Original languageEnglish (US)
Article numberM6-47
Pages (from-to)2090-2094
Number of pages5
JournalIEEE Nuclear Science Symposium Conference Record
StatePublished - Dec 1 2003
Event2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States
Duration: Oct 19 2003Oct 25 2003

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging


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