Abstract
SPECT (single photon emission computed tomography) is a non-invasive, cost-effective means for assessment of tissue/organ functions in nuclear medicine. For more accurate diagnosis, quantitative reconstruction of radiotracer concentration at any location inside the body is desired. To achieve this goal, we have to address a number of factors that significantly degrade the acquired projection data. The cone-beam SPECT system has higher resolution comparing with parallel-beam and fan-beam SPECT, which is highly advantageous in small object detection. In this paper, we used four analytical reconstruction schemes for cone-beam SPECT that allow simultaneous compensation for non-uniform attenuation and distance-dependent resolution variation (DDRV), as well as accurate treatment of Poisson noise. The simulation results show that the reconstruction scheme 1 and 4 both can obtain good reconstruction results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
