Echo-volume imaging.
Journal Article (Journal Article)
Two single-shot volume imaging techniques are described. The first, single-echo echo-volume imaging, is essentially the echo-volume imaging (EVI) sequence suggested by Mansfield (J. Phys. C. 10, L55 (1977)). The second is a multi-spin-echo approach in which one plane of k-space is collected during each spin echo. In both techniques, phase encoding gradients are applied in the z direction, and three-dimensional k-space is filled by a raster pattern in Cartesian coordinates. Spatial saturation is used to avoid aliasing in the y direction, and a selctive pulse is applied to excite the desired slab of tissue and eliminate aliasing in z. The average echo-times, measured from the center of the 90 degrees pulse to the center of the acquisition k-space (kx = ky = kz = 0), were 45 and 104 ms for single echo and multi-echo methods, respectively. Images of the human brain using both sequences are shown.
Full Text
Duke Authors
Cited Authors
- Song, AW; Wong, EC; Hyde, JS
Published Date
- November 1994
Published In
Volume / Issue
- 32 / 5
Start / End Page
- 668 - 671
PubMed ID
- 7808270
International Standard Serial Number (ISSN)
- 0740-3194
Digital Object Identifier (DOI)
- 10.1002/mrm.1910320518
Language
- eng
Conference Location
- United States