Use of adjoint Monte Carlo calculations in the simulation of SPECT systems
- Brookhaven National Lab., Upton, NY (United States)
- Massachusetts Institute and Technology, Cambridge, MA (United States)
Monte Carlo simulations of single photon emission computed tomography (SPECT) systems are used to facilitate the evaluation of the effects of physical processes such as scatter and attenuation that degrade the quality of the acquired images. As part of image analysis, it is of interest to identify the specific scatter and attenuation contributions to the detected image from differential regions within the source. The source for SPECT systems is characterized by a patient with an injected radiopharmaceutical labeled with a photon-emitting radioisotope. To better isolate the factors contributing to image degradation, it is useful to determine the sensitivities of tomographic images to changes in the radio nuclide source distribution and to the patient-collimator configuration. In particular, it is significant to establish relationships between variations in a given patient`s anatomy and the quality of the acquired images, such as those used for tumor detection. By determining the sensitivities of scatter and attenuation to the final images as a function of different source-detector configurations, the quality of tomographic images may be improved.
- OSTI ID:
- 552580
- Report Number(s):
- CONF-971125-; ISSN 0003-018X; TRN: 98:001780
- Journal Information:
- Transactions of the American Nuclear Society, Vol. 77; Conference: 1997 American Nuclear Society (ANS) winter meeting, Albuquerque, NM (United States), 16-20 Nov 1997; Other Information: PBD: 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Inverse Monte Carlo: a unified reconstruction algorithm for SPECT
SU-F-J-08: Quantitative SPECT Imaging of Ra-223 in a Phantom