Artifact analysis and reconstruction improvement in helical cardiac cone beam CT

IEEE Transactions on Medical Imaging
R ManzkeD Hawkes

Abstract

With the introduction of cone beam (CB) scanners, cardiac volumetric computed tomography (CT) imaging has the potential to become a noninvasive imaging tool in clinical routine for the diagnosis of various heart diseases. Heart rate adaptive reconstruction schemes enable the reconstruction of high-resolution volumetric data sets of the heart. Artifacts, caused by strong heart rate variations, high heart rates and obesity, decrease the image quality and the diagnostic value of the images. The image quality suffers from streak artifacts if suboptimal scan and reconstruction parameters are chosen, demanding improved gating techniques. In this paper, an artifact analysis is carried out which addresses the artifacts due to the gating when using a three-dimensional CB cardiac reconstruction technique. An automatic and patient specific cardiac weighting technique is presented in order to improve the image quality. Based on the properties of the reconstruction algorithm, several assessment techniques are introduced which enable the quantitative determination of the cycle-to-cycle transition smoothness and phase homogeneity of the image reconstruction. Projection data of four patients were acquired using a 16-slice CBCT system in low pi...Continue Reading

References

Feb 1, 1968·Circulation·A M WeisslerC D Schoenfeld
Jun 7, 2000·Medical Physics·K Taguchi, H Anno
Oct 6, 2000·IEEE Transactions on Medical Imaging·H HuiY Shen
Dec 29, 2000·IEEE Transactions on Medical Imaging·R ProksaJ Timmer
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Oct 8, 2003·Physics in Medicine and Biology·M GrassG Shechter
Jan 18, 2005·Medical Physics·R ManzkeM Grass

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Citations

Jan 18, 2005·Medical Physics·R ManzkeM Grass
Mar 15, 2006·Medical Physics·Katsuyuki TaguchiIlmar A Hein
Jan 17, 2008·Medical Physics·A N PrimakE L Ritman
Jul 3, 2013·Dento Maxillo Facial Radiology·A NemtoiA Gahleitner
Aug 22, 2006·Expert Review of Cardiovascular Therapy·Martin H Hoffmann, Jonathan Lessick
Mar 17, 2010·European Journal of Radiology·Ali HassanHatem Alkadhi
Jan 24, 2009·IEEE Transactions on Medical Imaging·Chong ZhangAlejandro F Frangi
Mar 31, 2005·Physics in Medicine and Biology·R ManzkeM Grass
Feb 14, 2006·Coronary Artery Disease·Mani VembarPeter C Johnson
Aug 25, 2019·Medical Physics·Sergej LebedevMarc Kachelrieß

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