Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1995-11-22
1997-05-27
Tokar, Michael J.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
25036309, G01T 1161
Patent
active
056335008
ABSTRACT:
A method of scatter correction for use with gamma cameras includes the steps of detecting and producing a first count value indicative of gamma radiation falling within a first energy range generally associated with a radionuclide photopeak. Gamma radiation falling within second and third energy ranges is also detected and a corresponding count produced. The second and third ranges are above and below the photopeak, respectively. The location of the second and third energy ranges is determined based on the energy resolution of the gamma camera such that a predetermined percentage of the radiation falling within the second and third ranges results from primary radiation. The second and third energy ranges may be located such that they are non-contiguous with the first energy range. Based on the count of radiation falling within the second and third ranges, the scatter radiation falling within the first energy range can be estimated, and the first count value corrected. The method is suitable for use with radionuclides having multiple closely spaced photopeaks as well as with multiple widely spaced photopeaks.
REFERENCES:
patent: 5371672 (1994-12-01), Motomura et al.
Ogawa, et al.; "A Practical Method for Position-Dependent Compton-Scatter Correction in Single Photon Emission CT"; IEEE Transactions on Medical Imaging, vol. 10, No. 3, Sep. 1991.
King, et al.; "A Dual-Photopeak Window Method for Scatter Correction"; The Journal of Nuclear Medicine, vol. 33, No. 4, Apr. 1992.
Jaszczak, et al.; "Improved SPECT Quantification Using Compensation for Scatter Photons"; The Journal of Nuclear Medicine; vol. 25, No. 8, pp. 893-900, 1984.
Ichihara, et al.; "Compton Scatter Compensation Using the Triple-Energy Window Method for Single-and Dual-Isotope SPECT"; The Journal of Nuclear Medicine, vol. 34, No. 12, Dec. 1993.
Ljungberg, et al.; "Comparison of Four Scatter Correction Methods Using Monte Carlo Simulated Source Distributions"; The Journal of Nuclear Medicine, vol. 35, No. 1, Jan. 1994.
Jarkewicz Gary G.
Maniawski Piotr J.
Miller Stephen D.
Morgan Hugh T.
Fry John J.
Gurin Timothy B.
Hanig Richard
Picker International Inc.
Tokar Michael J.
LandOfFree
Split window scatter correction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Split window scatter correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Split window scatter correction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2331001