Wisconsin Alumni Research Foundation

Jason A Polzin

Charles Anthony Mistretta

Thomas M Grist

Frank R Korosec

Richard Frayne

Marc T Alley

A dynamic MRA study of a subject is performed using a 3D fast gradient-recalled echo pulse sequence. The frame rate of the resulting series of reconstructed images is increased by sampling a central region of k-space at a higher rate than the peripheral regions of k-space. Image frames are reconstructed at each sampling of the central k-space region using the temporally nearest samples from the peripheral k-space regions.

Method for producing a time-resolved series of 3D magnetic resonance

NMR image data is acquired with velocity encoding gradients applied and both a phase difference image array and a complex difference image array are produced. A flow image is produced from the complex difference image array after it is corrected for spin saturation effects and calibrated using information derived from the phase difference image array. Total blood flow through vessels can be measured from the flow image.

Growing community of inventors

Madison, WI, United States of America

Jason A Polzin