Method and apparatus for correcting scattering in SPECT imaging

Details Method and apparatus for correcting scattering in SPECT imaging Method and apparatus for correcting scattering in SPECT imaging

2011-03-29

2011-03-29

Porta, David P (Department: 2884)

Radiant energy

Calibration or standardization methods

Reexamination Certificate

active

07915578

ABSTRACT:
A method and apparatus for correcting scattering in SPECT I-123 imaging. The method generally includes: accessing list mode data for a plurality of pixels corresponding to a first SPECT I-123 image generated using a gamma camera; generating a raw energy spectrum for at least some of the pixels utilizing the acquired list mode data; acquiring a gamma camera model corresponding to the gamma camera; utilizing the gamma camera model and an iterative algorithm to apply a first scattering correction to the raw energy spectrum; utilizing a Compton window to apply a second scattering correction to the raw energy spectrum; and generating a correction table with the corrected raw energy spectrum.

REFERENCES:
patent: 2007/0075248 (2007-04-01), Case et al.
Ichihara T., Ogawa K., Motomura N., Kubo A., Hashimoto S.; Compton Scatter Compensation Using the Triple-Energy Window Method for Single and Dual Isotope SPECT; Dec. 1993; The Journal of Nuclear Medicine; vol. 34, No. 12; pp. 2216-2221.
Du Y., Stumpf M., Frey E.; Efficient Monte Carlo Based Scatter Estimation for SPECT Imaging with Photon Track Reuse; May 1, 2007; The Journal of Nuclear Medicine; vol. 48, Supplement 2; p. 334.

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