Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Reexamination Certificate
2006-03-23
2008-12-16
Porta, David P (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
Reexamination Certificate
active
07465927
ABSTRACT:
For patient transmission data acquired simultaneously with patient emission data, blank transmission data are acquired in the absence of the patient emission and therefore under count rate conditions different from the count rate conditions of the patient transmission data. To prevent the different count rate conditions from causing artifacts in reconstructed tomographic images, a correction is made for spatially varying count rate effects on the attenuation correction. For example, the blank scan data are adjusted according to the count rate at which the patient emission data are acquired, and the adjusted blank scan data and the patient transmission data are used for attenuation correction of the patient emission data used for reconstructing a tomographic image.
REFERENCES:
patent: 5391877 (1995-02-01), Marks
patent: 6399951 (2002-06-01), Paulus et al.
patent: 6490476 (2002-12-01), Townsend et al.
patent: 2005/0189494 (2005-09-01), Conwell
patent: 2006/0214097 (2006-09-01), Wang et al.
Thompson et al, “Simultaneous Transmission and Emission Scans in Positron Emission Tomography”, IEEE Trans. Nuci. Sci, vol. 36, 1989, pp. 1011-1016.
Watson et al., “Design and Performance of a Single Photon Transmission Measurement for the ECAT ART”, 1997 MIC Conf. Rec., M9-02, 1998, pp. 1366-1370.
De Jong et al., Correction for Emission Contamination in Transmission Scans for the High Resolution Research Tomograph, IEEE Transactions on Nuclear Science, vol. 51, No. 3, Jun. 2004, pp. 673-676.
Sibomana et al, “Simultaneous Measurement of Transmission and Emission Contamination Using a Collimated 137Cs Point Source for the HRRT”, Nuclear Science Symposium Conference Record, vol. 4, IEEE, Oct. 16-22, 2004, pp. 2647-2651.
Watson et al., “Clinical Evaluation of Single-Photon Attenuation Correction for 3D Whole-Body PET”, IEEE Trans. on Nuc. Science, vol. 46, No. 4, Aug. 1999, pp. 1024-1031.
Watson et al., “Design and Performance of a Collimated Coincidence Point Sources for Simultaneous Transmission Measurements in 3-D PET”, IEEE Transactions on Nuclear Science, vol. 48, No. 3, Jun. 2001, pp. 673-679.
Casey Michael E.
Conti Maurizio
Panin Vladimir
Kendall Peter L.
Kim Kiho
Porta David P
Siemens Medical Solutions USA , Inc.
LandOfFree
Attenuation correction for nuclear medical imaging scanners... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Attenuation correction for nuclear medical imaging scanners..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Attenuation correction for nuclear medical imaging scanners... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4039246