HIGH-CONTRAST AND FAST 3-DIMENSIONAL MAGNETIC-RESONANCE-IMAGING AT HIGH FIELDS

Citation
Jh. Lee et al., HIGH-CONTRAST AND FAST 3-DIMENSIONAL MAGNETIC-RESONANCE-IMAGING AT HIGH FIELDS, Magnetic resonance in medicine, 34(3), 1995, pp. 308-312
Citations number
11
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
ISSN journal
07403194
Volume
34
Issue
3
Year of publication
1995
Pages
308 - 312
Database
ISI
SICI code
0740-3194(1995)34:3<308:HAF3MA>2.0.ZU;2-J
Abstract
A new three-dimensional imaging strategy based on magnetization prepar ed ultrafast gradient recalled echo technique that demonstrates pronou nced T-1 contrast at high fields is introduced, High-resolution three- dimensional image sets of human brain showing high contrast between wh ite and gray matter areas are presented, The ratio of contrast-to-nois e was examined as a function of the relevant parameters in the imaging sequence; calculations based on high-field T-1 values as well as the experimental data demonstrated that maximal contrast-to-noise ratio is attained under the same magnetization preparation conditions both for cortical and subcortical gray matter relative to white matter, leadin g to approximately equivalent appearance of all gray matter areas in t he same image. In addition, the images displayed clear visualization o f subtle anatomical structures such as the subthalamic nuclei (ventral tier nuclei, dorsomedial nucleus, and pulvinar) and mammillothalamic tracts.