Measuring nonconstant flow in magnetic resonance imaging

Author

Izen, Steven H. ; Haacke, E. Mark

Author_Institution

Case Western Reserve Univ., Cleveland, OH, USA

Volume

9

Issue

4

fYear

1990

fDate

12/1/1990 12:00:00 AM

Firstpage

450

Lastpage

460

Abstract

An attempt is made to quantify rapid flow using magnetic resonance imaging techniques. An analysis is presented in which it is assumed that constant velocity gradients are present. A deconvolution scheme which can remove the blurring from motion with acceleration is developed. This allows improved resolution and velocity determination. Computer experiments were performed on simulated data, where the velocity drops from 100 cm/s to 50 cm/s over a distance of 5 cm. In noise-free data, velocities were recovered to within 2% of the lower velocity and, for data with 5% white noise, to within 6%

Keywords

biomedical NMR; biomedical measurement; flow measurement; constant velocity gradients; deconvolution scheme; magnetic resonance imaging; motion blurring removal; noise-free data; nonconstant flow measurement; rapid flow quantification; simulated data; velocity determination; white noise; Acceleration; Computational modeling; Computer simulation; Deconvolution; Fluid flow measurement; Image reconstruction; Magnetic noise; Magnetic resonance imaging; Signal analysis; Velocity measurement;

fLanguage

English

Journal_Title

Medical Imaging, IEEE Transactions on

Publisher

ieee

ISSN

0278-0062

Type

jour

DOI

10.1109/42.61761

Filename

61761