Müller K, Rohkohl C, Lauritsch G, Schwemmer C, Heidbüchel H, De Buck S, Nuyens D, Kyriakou Y, Köhler C, Hornegger J (2012)
Publication Status: Accepted
Publication Type: Conference contribution, Conference Contribution
Publication year: 2012
Original Authors: Müller Kerstin, Rohkohl Christopher, Lauritsch Günter, Schwemmer Chris, Heidbüchel Hein, De Buck Stijn, Nuyens Dieter, Kyriakou Yiannis, Köhler Christoph, Hornegger, Joachim
Pages Range: 3707-3712
Conference Proceedings Title: 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC)
URI: http://www5.informatik.uni-erlangen.de/Forschung/Publikationen/2012/Mueller12-4MF.pdf
In interventional cardiology three-dimensionalanatomical and functional information of the cardiac chamberswould have an important impact on diagnosis and therapy. Withthe technology of C-arm CT it is possible to reconstruct intraprocedural3-D images from angiographic projection data. Inorder to generate accurate and artifact-free reconstructions fromdynamic cardiac projections, the motion needs to be taken intoaccount. We present the novel Combined Multiple Heart PhaseRegistration (CMHPR) method. CMHPR is an iterative motionestimation and compensation algorithm that uses projection dataacquired during a single C-arm sweep. Filtered-backprojection(FBP) volumes from electrocardiogram (ECG)-gated data are reconstructedfor different motion states of the heart. According toan unknown 4-D motion vector field the ECG-gated FBP imagesare deformed and accumulated to a sum volume for representingthe status of a particular heart phase. In an iterative optimizationprocedure the 4-D motion vector field is computed by registeringthe sum volume to a reference volume of the same heart phase.The negative normalized cross correlation (NCC) of both volumesis used as a cost function. In this paper, the reference image isgenerated using the prior image constrained compressed sensing(PICCS) algorithm combined with the improved total variation(iTV). First preliminary experiments on clinical porcine datasets show promising results. CMHPR reduces streak artifactsand simultaneously preserves sharp edges without producing theartificial comic-like appearance of the PICCS + iTV referencevolume.
APA:
Müller, K., Rohkohl, C., Lauritsch, G., Schwemmer, C., Heidbüchel, H., De Buck, S.,... Hornegger, J. (2012). 4-D Motion Field Estimation by Combined Multiple Heart Phase Registration (CMHPR) for Cardiac C-arm Data. In IEEE (Eds.), 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC) (pp. 3707-3712). Anaheim, CA, US.
MLA:
Müller, Kerstin, et al. "4-D Motion Field Estimation by Combined Multiple Heart Phase Registration (CMHPR) for Cardiac C-arm Data." Proceedings of the IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), Anaheim, CA Ed. IEEE, 2012. 3707-3712.
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