Orbital lesions: proton spectroscopic phase-dependent contrast MR imaging.
Publication/Presentation Date
8-1-1987
Abstract
Thirteen orbital lesions in 12 patients were evaluated with both conventional spin-echo magnetic resonance (MR) imaging and phase-dependent proton spectroscopic imaging. This technique, which makes use of small differences in the resonant frequencies of water and fat protons, provides excellent high-resolution images with simultaneous chemical shift information. In this method, there is 180 degrees opposition of phase between fat protons and water protons at the time of the gradient echo, resulting in signal cancellation in voxels containing equal signals from fat and water. In this preliminary series, advantages of spectroscopic images in orbital lesions included better lesion delineation, with superior anatomic definition of orbital apex involvement; more specific characterization of high-intensity hemorrhage with a single pulse sequence; elimination of potential confusion from chemical shift misregistration artifact; further clarification of possible intravascular flow abnormalities; and improved apparent intralesional contrast.
Volume
164
Issue
2
First Page
510
Last Page
514
ISSN
0033-8419
Published In/Presented At
Atlas, S. W., Grossman, R. I., Axel, L., Hackney, D. B., Bilaniuk, L. T., Goldberg, H. I., & Zimmerman, R. A. (1987). Orbital lesions: proton spectroscopic phase-dependent contrast MR imaging. Radiology, 164(2), 510–514. https://doi.org/10.1148/radiology.164.2.3602394
Disciplines
Medicine and Health Sciences | Pediatrics
PubMedID
3602394
Department(s)
Department of Pediatrics
Document Type
Article