Nuclear magnetic resonance imaging in multiple sclerosis
| Autor: | Leon Kaufman, David Norman, Catherine M. Mills, Michael J. Aminoff, Lawrence E. Crooks, Steven A. Lukes, Hillel S. Panitch |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Adult
Male Magnetic Resonance Spectroscopy Multiple Sclerosis Materials science Computed tomography Inversion recovery Signal Signal acquisition White matter Nuclear magnetic resonance Sampling (signal processing) medicine Humans False Negative Reactions medicine.diagnostic_test Pulse (signal processing) business.industry Multiple sclerosis Brain medicine.disease medicine.anatomical_structure Neurology Evaluation Studies as Topic Female Neurology (clinical) Tomography X-Ray Computed Nuclear medicine business |
| Zdroj: | Annals of Neurology. 13:592-601 |
| ISSN: | 1531-8249 0364-5134 |
| DOI: | 10.1002/ana.410130603 |
| Popis: | Ten patients with definite multiple sclerosis underwent hydrogen nuclear magnetic resonance imaging with a 3.5 kilogauss superconducting magnet, using the inversion recovery and spin-echo techniques of signal acquisition. Results were compared with high-resolution x-ray computed tomography. Spin-echo images demonstrated abnormal regions as areas of variably increased signal intensity. The contrast between abnormal and normal white matter improved as the intervals between sequential radiofrequency pulses and between pulse administration and signal sampling were increased. Inversion recovery images demonstrated abnormal areas as regions of decreased signal intensity but did not visualize lesions as well as spin-echo imaging. Spin-echo and inversion recovery imaging each demonstrated more extensive abnormalities than did computed tomography. |
| Databáze: | OpenAIRE |
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