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Optimizing image quality in MRI: on the evaluation of k-space trajectories for under-sampled MR acquisition

Quang Luong UGent, Bart Goossens UGent, Jan Aelterman UGent, Ljiljana Platisa UGent and Wilfried Philips UGent (2012) Proceedings 2012 Fourth International Workshop on Quality of Multimedia Experience (QoMEX 2012). p.25-26
abstract
Modern magnetic resonance (MR) applications require high-speed acquisitions. One of the possible ways to accelerate the process is to acquire the data along a k-space trajectory at sub-Nyquist rate and then reconstruct the image by an iterative non-linear reconstruction algorithm. The choice of k-space trajectory and its parameters has a large influence on the image quality. For physicians it is more important to optimize the reconstructed image and thus the trajectory for diagnostic tasks than creating aesthetically pleasing images. Task-specific model observers have been proposed in order to replace the time-consuming and costly human observer experiments. Very recently, we have developed a novel model observer for signal-known-statistically tasks, which can also measure several image quality factors such as noise, blur and contrast without reference images. In this paper, we discuss the image quality for several k-space trajectories in a pilot study. We find that traditionally used measures such as RMSE or PSNR do not correlate with the diagnostic image quality. Alternative measures are brought through our newly developed model observers.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
Proceedings 2012 Fourth International Workshop on Quality of Multimedia Experience (QoMEX 2012)
pages
25 - 26
publisher
IEEE
place of publication
Piscataway, NJ, USA
conference name
Fourth International Workshop on Quality of Multimedia Experience (QOMEX - 2012)
conference location
Yarra Valley, Melbourne, Australia
conference start
2012-07-05
conference end
2012-07-07
Web of Science type
Conference Paper
Web of Science id
12932542
ISBN
9781467307246
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
3000460
handle
http://hdl.handle.net/1854/LU-3000460
date created
2012-09-27 15:08:00
date last changed
2012-10-02 14:00:54
@inproceedings{3000460,
  abstract     = {Modern magnetic resonance (MR) applications require high-speed acquisitions. One of the possible ways to accelerate the process is to acquire the data along a k-space trajectory at sub-Nyquist rate and then reconstruct the image by an iterative non-linear reconstruction algorithm. The choice of k-space trajectory and its parameters has a large influence on the image quality. For physicians it is more important to optimize the reconstructed image and thus the trajectory for diagnostic tasks than creating aesthetically pleasing images. Task-specific model observers have been proposed in order to replace the time-consuming and costly human observer experiments. Very recently, we have developed a novel model observer for signal-known-statistically tasks, which can also measure several image quality factors such as noise, blur and contrast without reference images. In this paper, we discuss the image quality for several k-space trajectories in a pilot study. We find that traditionally used measures such as RMSE or PSNR do not correlate with the diagnostic image quality. Alternative measures are brought through our newly developed model observers.},
  author       = {Luong, Quang and Goossens, Bart and Aelterman, Jan and Platisa, Ljiljana and Philips, Wilfried},
  booktitle    = {Proceedings 2012 Fourth International Workshop on Quality of Multimedia Experience (QoMEX 2012)},
  isbn         = {9781467307246},
  language     = {eng},
  location     = {Yarra Valley, Melbourne, Australia},
  pages        = {25--26},
  publisher    = {IEEE},
  title        = {Optimizing image quality in MRI: on the evaluation of k-space trajectories for under-sampled MR acquisition},
  year         = {2012},
}

Chicago
Luong, Quang, Bart Goossens, Jan Aelterman, Ljiljana Platisa, and Wilfried Philips. 2012. “Optimizing Image Quality in MRI: On the Evaluation of K-space Trajectories for Under-sampled MR Acquisition.” In Proceedings 2012 Fourth International Workshop on Quality of Multimedia Experience (QoMEX 2012), 25–26. Piscataway, NJ, USA: IEEE.
APA
Luong, Q., Goossens, B., Aelterman, J., Platisa, L., & Philips, W. (2012). Optimizing image quality in MRI: on the evaluation of k-space trajectories for under-sampled MR acquisition. Proceedings 2012 Fourth International Workshop on Quality of Multimedia Experience (QoMEX 2012) (pp. 25–26). Presented at the Fourth International Workshop on Quality of Multimedia Experience (QOMEX - 2012), Piscataway, NJ, USA: IEEE.
Vancouver
1.
Luong Q, Goossens B, Aelterman J, Platisa L, Philips W. Optimizing image quality in MRI: on the evaluation of k-space trajectories for under-sampled MR acquisition. Proceedings 2012 Fourth International Workshop on Quality of Multimedia Experience (QoMEX 2012). Piscataway, NJ, USA: IEEE; 2012. p. 25–6.
MLA
Luong, Quang, Bart Goossens, Jan Aelterman, et al. “Optimizing Image Quality in MRI: On the Evaluation of K-space Trajectories for Under-sampled MR Acquisition.” Proceedings 2012 Fourth International Workshop on Quality of Multimedia Experience (QoMEX 2012). Piscataway, NJ, USA: IEEE, 2012. 25–26. Print.