Reduced motion artifacts in magnetic resonance imaging by adaptive spatiotemporal multiresolution reconstruction

Dennis M. Healy Jr.; Tim E. Olson; John B. Weaver

doi:10.1117/12.170071

15 March 1994 Reduced motion artifacts in magnetic resonance imaging by adaptive spatiotemporal multiresolution reconstruction

Dennis M. Healy Jr., Tim E. Olson, John B. Weaver

Author Affiliations +

Proceedings Volume 2242, Wavelet Applications; (1994) https://doi.org/10.1117/12.170071
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

In this paper we introduce an algorithm for imaging a time- varying object from its projections at different fixed times. We show that the reconstruction of coarse features, corresponding to low spatial-frequency data, can be made nearly instantaneously in time from the evolving data. A temporal sequence of these low spatial-frequency reconstructions can be used to estimate the motion of the object. Once the motion is estimated, we may use the estimate to compensate for some of the motion of fine scale features. This enables accurate reconstructions of the time varying fine structure in several cases. The algorithm is demonstrated for a selection of phantoms and actual MRI studies. In general, this technique shows promise for a wide variety of applications in MRI, as well as for heart imaging using X-ray CT. Clinical applications should include both functional MRI such as dynamic imaging of oxygen usage and blood flow in the brain, and motion imaging of joints, angiography in the lungs, and heart imaging.

Citation Download Citation

Dennis M. Healy Jr., Tim E. Olson, and John B. Weaver "Reduced motion artifacts in magnetic resonance imaging by adaptive spatiotemporal multiresolution reconstruction", Proc. SPIE 2242, Wavelet Applications, (15 March 1994); https://doi.org/10.1117/12.170071

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available