Abstract.
To develop an improved investigation protocol for MRI studies of intraocular lesions, imaging with a small surface coil (diameter 6 cm) was compared with a standard surface coil (diameter 11 cm). Both coils were assessed initially on an eye phantom and then by studying 22 patients with uveal melanoma and similar lesions of the eye. The influence of bandwidth and field or view (FOV) were systematically studied and evaluated quantitatively. A smaller bandwidth improved image quality independent of surface coil size. The subsequent secondary increase in chemical shift artefact was acceptable. Smaller FOVs (60–80 mm) necessitated the use of a smaller surface coil. A smaller bandwidth also proved to be advantageous with the use of the smaller surface coil. In conclusion, a smaller-diameter surface coil improves MR imaging of ocular lesions. Pulse sequences with a small bandwidth maintain an acceptable signal-to-noise ratio when the FOV is reduced.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received 27 December 1995; Revision received 29 July 1996; Accepted 3 September 1996
Rights and permissions
About this article
Cite this article
Hosten, N., Lemke, A., Sander, B. et al. MR anatomy and small lesions of the eye: improved delineation with a special surface coil. Eur Radiol 7, 459–463 (1997). https://doi.org/10.1007/s003300050183
Issue Date:
DOI: https://doi.org/10.1007/s003300050183