Abstract
MRI of uveal melanoma using 1.5-T technology and surface coils has developed into a standard procedure. The purpose of the study was to evaluate the feasibility of 3.0-T technology in eye imaging. To optimize the MRI sequences for clinical eye imaging with 3.0-T, six healthy volunteers were conducted using a 4.0-cm surface coil. Evaluation criteria were the signal-to-noise-ratio (SNR), contrast-to-noise-ratio (CNR) and image quality. A further six patients with uveal melanoma were examined with 1.5- and 3.0-T under retrobulbar anesthesia. During 3.0-T examinations of volunteers, eye movements caused significant artifacts. On the contrary, excellent imaging quality was reached in examinations of patients under retrobulbar anesthesia at 3.0 T. Subjective assessment showed no significant difference between 1.5 and 3.0 T in patients. Due to the increased SNR, the 3.0-T technique has the potential to improve eye imaging, but the higher susceptibility to motion artifacts limits the clinical use of this technique to patients receiving retrobulbar anesthesia.
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Acknowledgements
This paper was supported by the following projects: Graduate college 331 ‘‘Temperature-depending effects in therapy and diagnostics’’ of the German Research Council (GRK 331) and Special Program ‘‘3-T MRI for the whole body’’ of the German Research Council. The results of this paper are part of the thesis of Minouche Alai-Omid. The results of this paper have been presented at the ECR 2004.
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Lemke, AJ., Alai-Omid, M., Hengst, S.A. et al. Eye imaging with a 3.0-T MRI using a surface coil – a study on volunteers and initial patients with uveal melanoma. Eur Radiol 16, 1084–1089 (2006). https://doi.org/10.1007/s00330-005-0087-z
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DOI: https://doi.org/10.1007/s00330-005-0087-z