k-t BLAST andk-t SENSE: Dynamic MRI with high frame rate exploiting spatiotemporal correlations
نویسندگان
چکیده
منابع مشابه
k-t BLAST and k-t SENSE: dynamic MRI with high frame rate exploiting spatiotemporal correlations.
Dynamic images of natural objects exhibit significant correlations in k-space and time. Thus, it is feasible to acquire only a reduced amount of data and recover the missing portion afterwards. This leads to an improved temporal resolution, or an improved spatial resolution for a given amount of acquisition. Based on this approach, two methods were developed to significantly improve the perform...
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M. Lustig, J. M. Santos, D. L. Donoho, J. M. Pauly Electrical Engineering, Stanford University, Stanford, CA, United States, Statistics, Stanford University, Stanford, CA, United States Introduction Recently rapid imaging methods that exploit the spatial sparsity of images using under-sampled randomly perturbed spirals and non-linear reconstruction have been proposed [1,2]. These methods were i...
متن کاملImproved k-t BLAST and k-t SENSE using FOCUSS.
The dynamic MR imaging of time-varying objects, such as beating hearts or brain hemodynamics, requires a significant reduction of the data acquisition time without sacrificing spatial resolution. The classical approaches for this goal include parallel imaging, temporal filtering and their combinations. Recently, model-based reconstruction methods called k-t BLAST and k-t SENSE have been propose...
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A. Sigfridsson, J-P. E. Kvitting, L. Wigström, H. Knutsson Division of Clinical Physiology, Linköping University, Linköping, Sweden, Biomedical Engineering, Linköping University, Linköping, Sweden Introduction: The recently introduced k-t BLAST technique [1] for accelerating acquisition of dynamic imaging has shown promising results. By exploiting lower temporal frequency content in parts of th...
متن کاملAccelerating cine phase-contrast flow measurements using k-t BLAST and k-t SENSE.
Conventional phase-contrast velocity mapping in the ascending aorta was combined with k-t BLAST and k-t SENSE. Up to 5.3-fold net acceleration was achieved, enabling single breath-hold acquisitions. A standard phase-contrast (PC) sequence with interleaved acquisition of the velocity-encoded segments was modified to collect data in 2 stages, a high-resolution under sampled and a low-resolution f...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2003
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.10611