Home Publications Research Grants Inventions & Patents Awards Additional Research Activities Faculties & Institutions Research Areas

Cardiac C-arm CT: Efficient motion correction for 4D-FBP

Prümmer M, Wigström L, Hornegger J, Boese J, Lauritsch G, Strobel N, Fahrig R (2007)

---

Publication Type: Conference contribution, Conference Contribution

Publication year: 2007

Journal

Original Authors: Prümmer M., Wigström L., Hornegger J., Boese J., Lauritsch G., Strobel N., Fahrig R.

Book Volume: 4

Pages Range: 2620-2628

Event location: San Diego, CA

Journal Issue: null

DOI: 10.1109/NSSMIC.2006.354444

Abstract

Cardiac C-arm CT is a promising technique that enables 3D cardiac image acquisition and real-time fluoroscopy on the same system. The goal is to bring 3D imaging to the interventional suite for improved therapy planning, guidance, and monitoring. For the reconstruction of 3D cardiac image data, a complete set of projections from a specific heart phase is required. One approach to reduce motion blurring caused by the beating heart is to acquire multiple sweeps using the Carm and retrospectively select the projections that are closest to the desired cardiac phase. In order to further improve the temporal resolution, novel image processing algorithms that utilize retrospective motion correction were investigated in this study. The main focus of this work is to extend the well established FDK algorithm to incorporate motion correction during the backprojection step using a subject specific computed motion field. In a simulation study we show that motion blurring can be decreased significantly using the subjects' individual estimated heart motion based on a time series of retrospectively gated FDK reconstructions. In our experiments using an animal model we investigated the following two scenarios: (I) Can the image quality from a single sweep be improved given a subjects' individual prior computed motion field? (II) Can improved image quality be achieved using the full temporal resolution of a multi-sweep scan for motion estimation in combination with motion correction? Our results show that increasing temporal resolution using an first order estimated 4D motion vector field of the subjects' individual heart motion in the FDK-4D algorithm can decrease motion blurring substantially for both investigated scenarios. © 2006 IEEE.

Authors with CRIS profile

Involved external institutions

How to cite

APA:

Prümmer, M., Wigström, L., Hornegger, J., Boese, J., Lauritsch, G., Strobel, N., & Fahrig, R. (2007). Cardiac C-arm CT: Efficient motion correction for 4D-FBP. In Proceedings of the 2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD (pp. 2620-2628). San Diego, CA.

MLA:

Prümmer, Marcus, et al. "Cardiac C-arm CT: Efficient motion correction for 4D-FBP." Proceedings of the 2006 IEEE Nuclear Science Symposium, Medical Imaging Conference and 15th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, Special Focus Workshops, NSS/MIC/RTSD, San Diego, CA 2007. 2620-2628.

BibTeX: Download