Improvement of spatial resolution of keyhole effect images

Magnetic Resonance in Medicine

Volumn 39, Issue 2, 1998, Pages 244-250

  Oesterle, Claudia ^a,b   Hennig, Jürgen ^a  

^a UNIVERSITY OF FREIBURG   (Germany)

^b UNIVERSITY OF FREIBURG   (Germany)

Author keywords

Functional MRI; Keyhole imaging; Spatial resolution

Indexed keywords

IMAGE RESOLUTION; MAGNETIC RESONANCE IMAGING;

FUNCTIONAL MRI; HIGH RESOLUTION; KEYHOLE EFFECTS; PRIORI INFORMATION; RECONSTRUCTION ALGORITHMS; SAMPLING STRATEGIES; SHARP STRUCTURE; SPATIAL RESOLUTION;

IMAGE ENHANCEMENT;

ARTICLE; FOURIER ANALYSIS; IMAGE QUALITY; NUCLEAR MAGNETIC RESONANCE IMAGING; OPTICAL RESOLUTION;

EID: 0031908942     PISSN: 07403194     EISSN: None     Source Type: Journal    
DOI: 10.1002/mrm.1910390211     Document Type: Article

References (16)

1. P. Mansfield, A. A. Maudsley, Planar spin imaging by NMR. J. Magn. Res. 27, 101-119 (1977).
2. Z.-P. Liang, F. E. Boada, R. T. Constable, E. M. Haacke, P. C. Lauterbur, M. R. Smith, Constrained Reconstruction Methods in MR Imaging. Rev. Magn. Res. Med. 4, 67-185 (1992).
3. J. J. van Vaals, M. E. Brummer, W. T. Dixon, H. H. Tuithof, H. Enges, R. C. Nelson, B. M. Gerety, J. L. Chezmar, J. A. den Boer, "Keyhole" method for accelerating imaging of contrast agent uptake. J. Magn. Res. Imaging 3, 671-675 (1993).
4. R. A. Jones, O. Haraldseth, T. B. Müller, P. A. Rinck, A. N. Oksendal, K-space substitution: a novel dynamic imaging technique. Mag. Reson. Med. 29, 830-834 (1993).
5. C. Oesterle, J. Hennig, Improvement of spatial resolution of keyhcle effect images, in "Proc., ISMRM, 4th Scientific Meeting, New York, 1996," p. 1527.
6. A. Haase, J. Frahm, W. Hänicke, K. D. Merboldt, FLASH imaging. Rapid NMR imaging using low flip angle pulses. J. Magn. Res. 67, 257-266 (1986).
7. A. G. Webb, Z.-P. Liang, R. L. Magin, P. C. Lauterbur, Applications of reduced-encoding MR imaging with generalized-series reconstruction (RIGR). J. Magn. Reson. Imaging 3, 925-928 (1993).
8. Z.-P. Liang, P. C. Lauterbur, An efficient method for dynamic magnetic resonance imaging, IEEE Trans, Med. Imaging 13, 677-686 (1994).
9. Z.-P. Liang, P. C. Lauterbur, A generalized series approach to MR spectroscopic imaging, IEEE Trans. Med. Imaging MI-10, 132-137 (1991).
10. S. Chandra, Z.-P. Liang, A. G. Webb, H. Lee, H. D. Morris, P. C. Lauterbur, Application of reduced-encoding imaging with generalized-series reconstruction (RIGR) in dynamic MR imaging, J. Magn. Reson. Imaging 6, 783-797 (1996).
11. J. Bishop, I. Soutar, G. E. Santyr, F. Kelcz, D. B. Plewes, Quantitative evaluation of errors in keyhole breast images in "Proc., SMR, 2nd Annual Meeting, San Francisco, 1994," p. 785.
12. T. Roths, C. Oesterle, J. Honerkamp, J. Hennig, D. Maier, Enhancement of spatial resolution of keyhole effect images using regularization methods, in "Proc., ESMRMB, 13th Annual Meeting, Prague, 1996," p. 186.
13. J. Honerkamp, "Stochastic Dynamical Systems," VCH Publishers, New York, 1994.
14. J.-H. Gao, J. Xiong, S. Lai, E. M. Haacke, M. G. Woldorff, J. Li, P. T. Fax, Analytical comparison of keyhole, full k-space, and zero-padding approaches to functional MRI. in "Proc., ISMRM, 4th Scientific Meeting, Now York, 1996," p. 1803.
15. J.-H. Gao, J. Xiong, S. Lai, E. M. Haacke, M. G. Woldorff, J. Li, P. T. Fox, Improving the temporal resolution of functional MR imaging using keyhole techniques, Mag. Reson. Med. 35, 854-860 (1996).
16. J. Tintera, G. Schauss, J. Gawehn, P. Stoeter, Functional MRI with keyhole technique, in "Proc., 1st International Conference on Functional Mapping of the Human Brain, Paris, 1995," p. 124.