Iterative image reconstruction for planar small animal imaging with a multipinhole collimator [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy, 2002.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- page(s) R37-R116 : digital, PDF file
- Additional Creators
- Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- A method to reconstruct images from planar multipinhole single photon projection data using the iterative maximum likelihood expectation maximization algorithm has been developed. The projection and backprojection steps in the algorithm are accomplished using raytracing through each of the pinholes. The method was applied to a Tc-99m syringe and box phantom study and to a Tc- 99m sestamibi cardiac study in a Sprague-Dawley rat. Projection data were acquired using a custom-built detector whose key components were a pixellated array of 1x1x5 mm' NaI(Tl) scintillation crystals, a position-sensitive photomultiplier tube and a four pinhole array. For the phantom study the syringe:box activity concentration ratio was 5:1. Syringe contrast with background was 0.22 in the projection image and 0.59 in the reconstructed image. The reconstructed rat cardiac image shows improved visualization of the left ventricular myocardium. These results are a step toward the practicalapplication of high re
- Report Numbers
- E 1.99:jlab-phy-02-130
jlab-phy-02-130 - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
07/01/2002.
"jlab-phy-02-130"
Invited Talk compiled for 2002 IEEE International Symposium on biomedical Imaging.
Smith, Mark. - Funding Information
- AC05-84ER40150
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