A compact CT/SPECT system for small-object imaging

Y. Zingerman, H. Golan, A. Gersten, A. Moalem

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We report herein on a low-cost, high-performance dual imaging modality CT/SPECT system for small objects or animals. The system is realized from a commercial micro-focus X-ray tube, a Gd2O2S:Tb phosphor screen and a CCD camera. SPECT/planar imaging is obtained using a pinhole collimator with the same camera module as for X-ray/CT. Fusion of anatomic and functional images from the two modalities is easily accomplished by adjusting the magnification of the two modalities. Using an X-ray tube of 15 μm focal spot size, an image magnification of 1:1500, a field of view of 110 mm×110 mm, and adopting variable gamma detection geometry, the system may serve for numerous imaging applications and can be expanded into high-sensitivity (300 cpm/μCi), sub-millimeter (0.86 mm) SPECT resolution over a field of view of 20 mm in diameter.

Original languageEnglish
Pages (from-to)135-148
Number of pages14
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
StatePublished - 1 Jan 2008


  • Dual-modality system
  • Molecular imaging
  • Small-animal imaging
  • X-ray CCD detector

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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