Motion compensated generalized reconstruction for free-breathing dynamic contrast-enhanced MRI
نویسندگان
چکیده
منابع مشابه
Motion compensated reconstruction for free breathing dynamic constrast-enhanced MRI
INTRODUCTION: In contrast-enhanced MRI, medical diagnosis is often compromised by the motion, the need for registration and the difficulty of sustaining a breath-hold. A previously published motion correction algorithm GRICS (Generalized Reconstruction by Inversion of Coupled Systems) [1] has proven to correct for motion artefacts successfully in images acquired with a wide set of sequences, th...
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INTRODUCTION The analysis of abdominal and thoracic dynamic contrast-enhanced MRI is often impaired by motion-induced artifacts and misregistration, caused by physiological motion. Breath-holding is too short to cover these long acquisitions and suffers from imperfections. A previously published reconstruction algorithm, GRICS [1], corrects for motion-induced artifacts in a single image reconst...
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PURPOSE: Respiratory motion is a major issue in abdominal MRI, especially for pediatric patients who have difficulty performing breath-holds. The problem is exacerbated in lengthy scans, such as for dynamic contrast enhanced (DCE) MRI. Much of the previous work has been focused on reducing respiratory motion artifacts through reconstruction correction schemes. An alternative approach is resolvi...
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Background Cardiac magnetic resonance imaging (CMR) is affected by both cardiac and respiratory motion. While ECG-gated imaging within a breath hold is often the method of choice to limit motion-related artifacts, free-breathing methods are favorable in patients with limited breath hold capability. Free-breathing approaches require either rapid singleshot scans to reduce respiratory motion arti...
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To develop an efficient motion-compensated reconstruction technique for free-breathing cardiac magnetic resonance imaging (MRI) that allows high-quality images to be reconstructed from multiple undersampled single-shot acquisitions. The proposed method is a joint image reconstruction and motion correction meth-od consisting of several steps, including a non-rigid motion extraction and a motion-...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2010
ISSN: 0740-3194
DOI: 10.1002/mrm.22644