The multi-module, multi-resolution system (M3 R): A novel small-animal SPECT system

Jacob Y. Hesterman, Matthew A. Kupinski, Lars R. Furenlid, Donald W. Wilson, Harrison H. Barrett

Research output: Contribution to journalReview articlepeer-review

43 Scopus citations


We have designed and built an inexpensive, high-resolution, tomographic imaging system, dubbed the multi-module, multi-resolution system, or M3 R. Slots machined into the system shielding allow for the interchange of pinhole plates, enabling the system to operate over a wide range of magnifications and with virtually any desired pinhole configuration. The flexibility of the system allows system optimization for specific imaging tasks and also allows for modifications necessary due to improved detectors, electronics, and knowledge of system construction (e.g., system sensitivity optimization). We provide an overview of M3 R, focusing primarily on system design and construction, aperture construction, and calibration methods. Reconstruction algorithms will be described and reconstructed images presented.

Original languageEnglish (US)
Pages (from-to)987-993
Number of pages7
JournalMedical physics
Issue number3
StatePublished - 2007


  • Hardware optimization
  • Multi-pinhole apertures
  • Pinhole apertures
  • Small-animal SPECT

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging


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