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Continuous radial data acquisition for dynamic MRI
Author(s) -
Rasche Volker,
Boer Ruud W. De,
Holz Dietrich,
Proksa Roland
Publication year - 1995
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910340515
Subject(s) - computer science , dynamic contrast enhanced mri , data acquisition , nuclear magnetic resonance , magnetic resonance imaging , radiology , medicine , physics , operating system
Since image acquisition times in MRI have been reduced considerably over recent years, several new important application areas of MRI have appeared. In addition to pure static anatomic information, the evolution of a dynamic process may be visualized by a sequence of temporal snapshots of the process acquired within a short time period. This makes applications like interactive or interventional MRI as well as the acquisition of additional functional information feasible. For high temporal resolution, all these applications require a quasi real‐time image acquisition during the time the interaction or dynamic process evolves. We present an approach to realtime imaging using a continuous radial acquisition scheme. The intrinsic advantages of radial or projection reconstruction (PR) techniques are used to minimize motion‐related image distortions. Modifications of the acquisition scheme as well as dedicated reconstruction techniques are used to further reduce the temporal blurring due to the finite acquisition time of one entire data set in our approach. So far we have used this technique for the visualization of active joint motion.