Determination of the temporal and spatial resolution in retrospectively gated cardiac cone-beam CT

Udo van Stevendaal; Philipp G. C. Begemann; Joern Borgert; Ruediger Grewer; Sascha Krueger; Holger Timinger; Michael Grass

doi:10.1117/12.534772

12 May 2004 Determination of the temporal and spatial resolution in retrospectively gated cardiac cone-beam CT

Udo van Stevendaal, Philipp G. C. Begemann, Joern Borgert, Ruediger Grewer, Sascha Krueger, Holger Timinger, Michael Grass

Author Affiliations +

Proceedings Volume 5370, Medical Imaging 2004: Image Processing; (2004) https://doi.org/10.1117/12.534772
Event: Medical Imaging 2004, 2004, San Diego, California, United States

Abstract

In this contribution, we investigate the spatial and temporal resolution of retrospectively gated cardiac cone-beam CT. Data of a static and a dynamic resolution phantom are acquired for various heart rates, table speeds and scanner rotation times. The projection data are reconstructed in different motion states with the help of a retrospectively gated helical cardiac cone-beam reconstruction method. This multi-cycle method automatically adapts the number of heart cycles used for the reconstruction, based on the scan parameters and the ECG data. The spatial resolution is derived from a resolution phantom by multi-planar reformation (MPR) along the scan direction.

Citation Download Citation

Udo van Stevendaal, Philipp G. C. Begemann, Joern Borgert, Ruediger Grewer, Sascha Krueger, Holger Timinger, and Michael Grass "Determination of the temporal and spatial resolution in retrospectively gated cardiac cone-beam CT", Proc. SPIE 5370, Medical Imaging 2004: Image Processing, (12 May 2004); https://doi.org/10.1117/12.534772

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