Temporally constrained reconstruction of dynamic cardiac perfusion MRI
نویسندگان
چکیده
منابع مشابه
Temporally constrained reconstruction of dynamic cardiac perfusion MRI.
Dynamic contrast-enhanced (DCE) MRI is a powerful technique to probe an area of interest in the body. Here a temporally constrained reconstruction (TCR) technique that requires less k-space data over time to obtain good-quality reconstructed images is proposed. This approach can be used to improve the spatial or temporal resolution, or increase the coverage of the object of interest. The method...
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The monitoring of thermal ablation procedures would benefit from an acceleration in the rate at which MRI temperature maps are acquired. Constrained reconstruction techniques have been shown to be capable of generating high quality images using only a fraction of the k-space data. Here, we present a temporally constrained reconstruction (TCR) algorithm applied to proton resonance frequency shif...
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Introduction: The fundamental challenge in dynamic MR imaging is the tradeoff between spatial resolution and temporal resolution. Most traditional dynamic image acquisition methods and associated image reconstruction methods have been based on k-space operations. One acquires a temporal sequence of incomplete k-space sample sets, along with one (or two) complete reference datasets, and then emp...
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PURPOSE To assess the accuracy of a model-based approach for registration of myocardial dynamic contrast-enhanced (DCE)-MRI corrupted by respiratory motion. MATERIALS AND METHODS Ten patients were scanned for myocardial perfusion on 3T or 1.5T scanners, and short- and long-axis slices were acquired. Interframe registration was done using an iterative model-based method in conjunction with a m...
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PURPOSE Rapid reconstruction of undersampled multicoil MRI data with iterative constrained reconstruction method is a challenge. The authors sought to develop a new substitution based variable splitting algorithm for faster reconstruction of multicoil cardiac perfusion MRI data. METHODS The new method, split Bregman multicoil accelerated reconstruction technique (SMART), uses a combination of...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2007
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.21248