Radiant energy – Calibration or standardization methods
Reexamination Certificate
2011-02-15
2011-02-15
Porta, David P (Department: 2884)
Radiant energy
Calibration or standardization methods
C250S363090
Reexamination Certificate
active
07888632
ABSTRACT:
A method for co-registering attenuation data of MR coils in a MR/PET imaging system with PET emission data includes computing a likelihood of PET emission data on a grid in a parameter space based on an algorithm, wherein the algorithm defines L(λ, μbody, μcoils{p}) as a log-likelihood of measured PET data, where λ is an emitter distribution (image), μbody is a known linear attenuation coefficient (LAC) distribution of the body from MRI, μcoils is a linear attenuation coefficient map of MRI coils, and {p} is a set of parameters governing the position of each coil, wherein if μcoils is assumed, then λ can be reconstructed and forward projected and L can be computed. The method includes adjusting the estimated position of the MR coils to maximize the likelihood of emission data based on the computed L.
REFERENCES:
patent: 7218112 (2007-05-01), Ladebeck et al.
patent: 2006/0237652 (2006-10-01), Kimchy et al.
patent: 2008/0088309 (2008-04-01), Eberler et al.
patent: 2009/0105583 (2009-04-01), Martin et al.
Kops et al, “Attenuation correction of PET scanning based on MR images,” IEEE Science Symposium and Medical Imaging Conference 2006 (San Diego).
Nuyts et al., “Simultaneous maximum a-psoteriori reconstruction of attenuation and activity distributions from emission sinograms,” IEEE Transactions on Medical Imaging, vol. 18, No. 5, pp. 393-403, 1999.
Ladebeck Ralf
Michel Christian J.
Watson Charles C.
Kendall Peter L.
Porta David P
Siemens Medical Solutions USA , Inc.
Taningco Marcus H
LandOfFree
Co-registering attenuation data and emission data in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Co-registering attenuation data and emission data in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Co-registering attenuation data and emission data in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2641158