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• W2009071405 abstract "Multislice helical computed tomography (CT) is a promising noninvasive technique for coronary artery imaging. Various factors can cause inconsistencies in cardiac CT data, which can result in degraded image quality. These inconsistencies may be the result of the patient physiology (e.g., heart rate variations), the nature of the data (e.g., cone‐angle), or the reconstruction algorithm itself. An algorithm which provides the best temporal resolution for each slice, for example, often provides suboptimal image quality for the entire volume since the cardiac temporal resolution (TRc) changes from slice to slice. Such variations in TRc can generate strong banding artifacts in multi‐planar reconstruction images or three‐dimensional images. Discontinuous heart walls and coronary arteries may compromise the accuracy of the diagnosis. A ‐blocker is often used to reduce and stabilize patients' heart rate but cannot eliminate the variation. In order to obtain robust and optimal image quality, a software solution that increases the temporal resolution and decreases the effect of heart rate is highly desirable. This paper proposes an ECG‐correlated direct cone‐beam reconstruction algorithm (TCOT‐EGR) with cardiac banding artifact correction (CBC) and disconnected projections redundancy compensation technique (DIRECT). First the theory and analytical model of the cardiac temporal resolution is outlined. Next, the performance of the proposed algorithms is evaluated by using computer simulations as well as patient data. It will be shown that the proposed algorithms enhance the robustness of the image quality against inconsistencies by guaranteeing smooth transition of heart cycles used in reconstruction." @default.
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• W2009071405 date "2006-01-31" @default.
• W2009071405 modified "2023-10-04" @default.
• W2009071405 title "Direct cone-beam cardiac reconstruction algorithm with cardiac banding artifact correction" @default.
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• W2009071405 doi "https://doi.org/10.1118/1.2163247" @default.
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