Magnetic resonance imaging of the orbit: a preliminary experience
| Autor: | J S Han, C T Bonstelle, J E Benson, R J Alfidi, Benjamin Kaufman, M Levine |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Adult
Male Magnetic Resonance Spectroscopy genetic structures medicine.diagnostic_test business.industry Partial volume Magnetic resonance imaging Computed tomography Middle Aged Mr imaging Orbit Orbital Diseases medicine Humans Orbital Neoplasms Female Radiology Nuclear Medicine and imaging Bony orbit Signal intensity Tomography X-Ray Computed business Nuclear medicine Aged |
| Zdroj: | Radiology. 150:755-759 |
| ISSN: | 1527-1315 0033-8419 |
| DOI: | 10.1148/radiology.150.3.6695076 |
| Popis: | Eleven patients with various space-occupying lesions in the orbit were examined, using a 0.3-tesla superconducting magnet to assess the capabilities and limitations of magnetic resonance (MR) imaging in the investigation of orbital lesions. Although the images provided valuable anatomic data, the bright signal intensity of fat and the partial volume effects of large section thickness resulted in loss of resolution for small, low-signal-intensity structures. The limitations of MR imaging were also reaffirmed by the lack of visualization of calcifications and of the bony orbit. These preliminary results show that MR offers no advantage over x-ray computed tomography except for its lack of ionizing radiation. Further technical improvements are needed before MR imaging will be made useful in this area. |
| Databáze: | OpenAIRE |
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