Apparatus and methods for determining a system matrix for...

Details Apparatus and methods for determining a system matrix for... Apparatus and methods for determining a system matrix for...

2009-03-31

2010-11-09

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

C250S363040

Reexamination Certificate

active

07829856

ABSTRACT:
Apparatus and methods for determining a system matrix for pinhole collimator imaging systems are provided. One method includes using a closed form expression to determine a penetration term for a collimator of the medical imaging system and determining a point spread function of the collimator based on the penetration term. The method further includes calculating the system matrix for the medical imaging system based on the determined point spread function.

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Girish Bal and Paul D Acton, Analytical Derivation of the Point Spread Function for Pinhole Collimators, Institute of Physics Publishing, Physics in Medicine and Biology, Phys. Med. Biol. 51 (2006) 4923-4950. 28 pages.
van der Have et al., “System Calibration and Statistical Image Reconstruction for Ultra-High Resolution Stationary Pinhole SPECT”, IEEE Transactions on Medical Imaging, vol. 27, No. 7, pp. 960-971, Jul. 2008.

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