The multi-module, multi-resolution system (M3R): a novel small-animal SPECT system.
We have designed and built an inexpensive, high-resolution, tomographic imaging system, dubbed the multi-module, multi-resolution system, or M3R. 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 M3R, focusing primarily on system design and construction, aperture construction, and calibration methods. Reconstruction algorithms will be described and reconstructed images presented.
Hesterman
Jacob Y
JY
College of Optical Sciences, University of Arizona, 1630 E. University Blvd., Tucson, Arizona 85721, USA.
Kupinski
Matthew A
MA
Furenlid
Lars R
LR
Wilson
Donald W
DW
Barrett
Harrison H
HH
D000465:Algorithms; D000818:Animals; D002138:Calibration; D003952:Diagnostic Imaging / Q000379:methods*; D004581:Electronics; D004867:Equipment Design; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D019047:Phantoms, Imaging; D017785:Photons; D019275:Radiopharmaceuticals; D012984:Software; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*
D019275:Radiopharmaceuticals