Now showing items 1-3 of 3
Covariance of Kinetic Parameter Estimators Based on Time Activity Curve Reconstructions: Preliminary Study on 1D Dynamic Imaging
(IEEE, 2004-04-15)
We provide approximate expressions for the covariance matrix of kinetic parameter estimators based on time activity curve (TAC) reconstructions when TACs are modeled as a linear combination of temporal basis functions such ...
Incremental Optimization Transfer Algorithms: Application to Transmission Tomography
(IEEE, 2004-10-16)
No convergent ordered subsets (OS) type image
reconstruction algorithms for transmission tomography have been
proposed to date. In contrast, in emission tomography, there
are two known families of convergent OS algorithms: ...
Emission Image Reconstruction for Randoms-Precorrected PET Allowing Negative Sinogram Values
(IEEE, 2004-05-04)
Most positron emission tomography (PET) emission scans are corrected for accidental coincidence (AC) events by real-time subtraction of delayed-window coincidences, leaving only the randoms-precorrected data available for ...