University of Chicago

Beth Israel Deaconess Medical Center, Inc.

Keigo Kawaji

Reza Nezafat

Timothy J Carroll

Warren J Manning

Amit Patel

Charles G Cantrell

An apparatus to jointly measure oxygen utilization and tissue strain includes an imaging system and a computer processor operatively coupled to the imaging system. The computer processor is configured to control the imaging system to perform a pulse sequence on tissue of a subject. The computer processor also acquires oxygen utilization data and strain data responsive to the pulse sequence. The computer processor further determines an amount of strain on the tissue of the subject based at least in part on the strain data and an amount of oxygen utilization of the tissue of the subject based at least in part on the oxygen utilization data.

Combined oxygen utilization, strain, and anatomic imaging with magnetic resonance imaging

A method and apparatus for MRI retrospective reconstruction determines a period of minimal coronary artery motion within the acquired temporal window with a rotation angle optimized for a K-space four-dimensional (4D) volume by a segmented 4D radial stack-of-stars (SOS) acquisition during a temporal acquisition window (taw). Radial stacks of the image of an object are acquired by performing the radial (SOS) acquisition to determine a plurality of kplane samples of the object, in which each kplane is repeatedly determined during a sub-window of the temporal acquisition window. Consecutive volumes of kcentric slices of the image at each temporal sub-window of the temporal acquisition window are generated and summed to fill a 3D k-space volume. The radial (SOS) acquisition of the image is determined utilizing a customized rotation angle &#x3b8; providing a uniform distribution of k-space spokes of the kcentric slices for each sub-window of the (taw).

MRI methods and apparatus for flexible visualization of any subset of an enlarged temporal window

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Chicago, IL, United States of America

Keigo Kawaji