PT  - JOURNAL ARTICLE
AU  - Greer, Kim L.
AU  - Harris, C. Craig
AU  - Jaszczak, Ronald J.
AU  - Coleman, R. Edward
AU  - Hedlund, Laurence W.
AU  - Floyd, Carey E.
AU  - Manglos, Stephen H.
TI  - Transmission Computed Tomography Data Acquisition with a SPECT System
DP  - 1987 Jun 01
TA  - Journal of Nuclear Medicine Technology
PG  - 53--56
VI  - 15
IP  - 2
4099  - http://tech.snmjournals.org/content/15/2/53.short
4100  - http://tech.snmjournals.org/content/15/2/53.full
SO  - J. Nucl. Med. Technol.1987 Jun 01; 15
AB  - Phantom and animal transmission computed tomography (TCT) scans were performed with a camera-based single photon emission computed tomography (SPECT) system to determine system linearity as a function of object density, which is important in the accurate determination of attenuation coefficients for SPECT attenuation compensation. Results from phantoms showed promise in providing a linear relationship (R = 0.997) in measuring density while maintaining good image resolution (FWHM = 10.5 mm). Animal images were essentially free of artifacts. Transmission computed tomography scans derived from a SPECT system appear to have the potential to provide data suitable for incorporation in an attenuation compensation algorithm at relatively low (calculated) radiation doses to the subjects.