A Simplified Pipeline for Motion Correction in Dual Gated Cardiac PET

Lars Ruthotto, Fabian Gigengack, Martin Burger, Carsten H. Wolters, Xiaoyi Jiang, Klaus P. Schäfers, Jan Modersitzki


Positron Emission Tomography (PET) is a nuclear imaging technique of increasing importance e.g. in cardiovascular investigations. However, cardiac and respiratory motion of the patient degrade the image quality due to acquisition times in the order of minutes. Reconstructions without motion compensation are prone to spatial blurring and affected attenuation correction. These effects can be reduced by gating, motion correction and finally summation of the transformed images. This paper describes a new and systematic approach for the correction of both cardiac and respiratory motion. Key contribution is the splitting of the motion into respiratory and cardiac components, which are then corrected individually. For the considered gating scheme the number of registration problems is reduced by a factor of 3, which considerably simplifies the motion correction pipeline compared to previous approaches. The subproblems are stabilized by averaging cardiac gates for respiratory motion estimation and vice versa. The potential of the novel pipeline is evaluated in a group study on data of 21 human patients.
Original languageEnglish
Title of host publicationBildverarbeitung für die Medizin 2012
EditorsThomas Tolxdorff, Thomas Martin Deserno, Heinz Handels, Hans-Peter Meinzer
Number of pages6
Place of PublicationBerlin, Heidelberg
PublisherSpringer Berlin Heidelberg
Publication date16.03.2012
ISBN (Print)978-3-642-28501-1
ISBN (Electronic)978-3-642-28502-8
Publication statusPublished - 16.03.2012
EventWorkshop on Bildverarbeitung fur die Medizin 2012 - Berlin, Germany
Duration: 18.03.201220.03.2012


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