Patent ID: 8934692
Filing Date: 2015-01-13
Classification: A61B

Abstract:
1. A method for determining a PET image data record of a target area from PET image data recorded during a period using a combined PET device provided with an additional imaging modality, at least one attenuation map describing absorption of photons in the imaging area being used for attenuation correction of the PET image data, the method comprising: dividing the PET image data, as a function of at least one change in the attenuation in the imaging area during the period due to an administered contrast medium, into at least two PET image data groups of different time domains of the period, wherein different attenuation maps are used for attenuation correction for at least two PET image data groups and at least one secondary image data record of the additional imaging modality is recorded for the at least two PET image data groups, the different attenuation maps being determined using the secondary image data record; and evaluating the at least two PET image data groups differently with respect to consideration of the attenuation, wherein when using magnetic resonance as the additional imaging modality, an influence of the contrast medium on the attenuation of the photons is determined with the aid of at least one magnetic resonance subtraction image.