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Radiology, Vol 153, 409-414, Copyright © 1984 by Radiological Society of North America

ARTICLES

Cerebral magnetic resonance: comparison of high and low field strength imaging

LT Bilaniuk, RA Zimmerman, FW Wehrli, HI Goldberg, RI Grossman, PA Bottomley, WA Edelstein, GH Glover, JR MacFall and RW Redington

Low field strength (0.12 Tesla resistive) and high field strength (1.0, 1.4, or 1.5 Tesla superconductive) magnetic resonance imagers were compared for their ability to detect central nervous system lesions. Sixteen adult patients with known lesions and three normal volunteers were studied. Contrast-enhanced computed tomography was used as the standard. The data demonstrate that imaging at high magnetic field strength is superior to low field strength imaging for the detection and delineation of lesions. This finding can be explained by the superior signal-to-noise ratio achievable at the higher magnetic field strengths. High field MR imaging was also found to outperform CT in demonstrating anatomic details and relationships. It is predicted that the use of low saturation (e.g., long TR spin echo technique) will make the gain in contrast-to-noise ratio even more significant.


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A. J. Maubon, J.-M. Ferru, V. Berger, M. C. Soulage, M. DeGraef, P. Aubas, P. Coupeau, E. Dumont, and J.-P. Rouanet
Effect of Field Strength on MR Images: Comparison of the Same Subject at 0.5, 1.0, and 1.5 T
RadioGraphics, July 1, 1999; 19(4): 1057 - 1067.
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