Share Email Print
cover

Proceedings Paper

HYPR: constrained reconstruction for enhanced SNR in dynamic medical imaging
Author(s): C. Mistretta; O. Wieben; J. Velikina; Y. Wu; K. Johnson; F. Korosec; O. Unal; G. Chen; S. Fain; B. Christian; O. Nalcioglu; R. A. Kruger; W. Block; A. Samsonov; M. Speidel; M. Van Lysel; H. Rowley; M. Supanich; P. Turski; Yan Wu; J. Holmes; S. Kecskemeti; C. Moran; R. O'Halloran; L. Keith; A. Alexander; E. Brodsky; J. E. Lee; T. Hall; J. Zagzebski
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

During the last eight years our group has developed radial acquisitions with angular undersampling factors of several hundred that accelerate MRI in selected applications. As with all previous acceleration techniques, SNR typically falls as least as fast as the inverse square root of the undersampling factor. This limits the SNR available to support the small voxels that these methods can image over short time intervals in applications like time-resolved contrast-enhanced MR angiography (CE-MRA). Instead of processing each time interval independently, we have developed constrained reconstruction methods that exploit the significant correlation between temporal sampling points. A broad class of methods, termed HighlY Constrained Back PRojection (HYPR), generalizes this concept to other modalities and sampling dimensions.

Paper Details

Date Published: 18 March 2008
PDF: 9 pages
Proc. SPIE 6913, Medical Imaging 2008: Physics of Medical Imaging, 691305 (18 March 2008); doi: 10.1117/12.771413
Show Author Affiliations
C. Mistretta, Univ. of Wisconsin-Madison (United States)
O. Wieben, Univ. of Wisconsin-Madison (United States)
J. Velikina, Univ. of Wisconsin-Madison (United States)
Y. Wu, Univ. of Wisconsin-Madison (United States)
K. Johnson, Univ. of Wisconsin-Madison (United States)
F. Korosec, Univ. of Wisconsin-Madison (United States)
O. Unal, Univ. of Wisconsin-Madison (United States)
G. Chen, Univ. of Wisconsin-Madison (United States)
S. Fain, Univ. of Wisconsin-Madison (United States)
B. Christian, Univ. of Wisconsin-Madison (United States)
O. Nalcioglu, Univ. of California-Irvine (United States)
R. A. Kruger, OptoSonics, Inc. (United States)
W. Block, Univ. of Wisconsin-Madison (United States)
A. Samsonov, Univ. of Wisconsin-Madison (United States)
M. Speidel, Univ. of Wisconsin-Madison (United States)
M. Van Lysel, Univ. of Wisconsin-Madison (United States)
H. Rowley, Univ. of Wisconsin-Madison (United States)
M. Supanich, Univ. of Wisconsin-Madison (United States)
P. Turski, Univ. of Wisconsin-Madison (United States)
Yan Wu, Univ. of Wisconsin-Madison (United States)
J. Holmes, Univ. of Wisconsin-Madison (United States)
S. Kecskemeti, Univ. of Wisconsin-Madison (United States)
C. Moran, Univ. of Wisconsin-Madison (United States)
R. O'Halloran, Univ. of Wisconsin-Madison (United States)
L. Keith, Univ. of Wisconsin-Madison (United States)
A. Alexander, Univ. of Wisconsin-Madison (United States)
E. Brodsky, Univ. of Wisconsin-Madison (United States)
J. E. Lee, Univ. of Wisconsin-Madison (United States)
T. Hall, Univ. of Wisconsin-Madison (United States)
J. Zagzebski, Univ. of Wisconsin-Madison (United States)


Published in SPIE Proceedings Vol. 6913:
Medical Imaging 2008: Physics of Medical Imaging
Jiang Hsieh; Ehsan Samei, Editor(s)

© SPIE. Terms of Use
Back to Top