Referenced Items are not available for this document.
A multi-energy data acquisition system based on the Macintosh II computer and a commercial ADC subsystem has been developed to allow the application of sophisticated Compton-scatter correction procedures. The system digitizes position and energy signals from the camera to 12 bits, bins the data into images, and transfers the data via an Ethernet interface to a computer network for reconstruction and analysis. The system also provides the necessary gantry control signals for tomographic acquisition. In a preliminary application, the system has been used along with polynomial nonlinear spectral fitting, which can account for shifts in the energy spectrum, to estimate scatter fractions for a hot, off-axis sphere in a cold, cylindrical phantom. The radioisotope was 99mTc. The resultant scatter fractions displayed the expected symmetry with camera angle, and dependence on the amount of scattering material between the source and camera
Published in:
Nuclear Science, IEEE Transactions on
(Volume:39
,
Issue:
4
)
Date of Publication: Aug 1992
- Page(s):
- 864 - 868
- ISSN :
- 0018-9499
- INSPEC Accession Number:
- 4316268
- Digital Object Identifier :
- 10.1109/23.159722
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Aug 1992
- Sponsored by :
- IEEE Nuclear and Plasma Sciences Society
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