Hammersmith Imanet Limited

General Electric Company

Charalampos Panos Tsoumpas

Kris Filip Johan Jules Thielemans

Floribertus P M Heukensfeldt Jansen

The method calculates a scatter estimate for scatter correction of detection data from a subject in a positron emission tomographic scanner. The detection data represent the scattered events and unscattered events of annihilation photons emitted in the subject. The method uses the following steps:

Method of and software for calculating a scatter estimate for tomographic scanning and system for tomographic scanning

The method calculates a scatter estimate for annihilation photons in a subject having a distribution of attenuation. The method can be used for scatter correction of detection data from a positron emission tomographic scanner. The method uses the following steps: &#x2014;select a first scatter point Sand a second scatter point S, &#x2014;determine a first scatter probability for scattering of a photon at scatter point Sand a second scatter probability for scattering of a photon at scatter point S, &#x2014;determine an integral of the attenuation over a line connecting Sand S, &#x2014;multiply the integral and the scatter probabilities and use the product in the calculation of the scatter estimate.

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London, United Kingdom

Charalampos Panos Tsoumpas