Retrobulbar vasculature using 7-T magnetic resonance imaging with dedicated eye surface coil

John B Christoforidis, Peter A. Wassenaar, Greg A. Christoforidis, Vincent Y. Ho, Michael V. Knopp, Petra M. Schmalbrock

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Purpose: To determine the resolution and utility of using a dedicated, single-loop eye coil at 7 T to image the posterior ocular structures and vascular anatomy. Methods: Imaging was performed on eight subjects (age range 26-54 years, four female, four male) with 7 T using a transmit head coil for excitation and a dedicated 5-cm eye surface receive coil. Acquisition parameters at 7 T for 3D spoiled gradient echo (3D-SPGR) sequences were optimized. Results: It was possible to delineate the retina, sclera, and choroid, and fine details within the anterior and posterior segments of the eye. Retro-orbital and posterior ocular anatomy remained well visualized despite motion and susceptibility artifacts of anterior ocular structures. The ophthalmic arteries and their first-order branches were consistently visualized and improved with registration and summation of repeat scans. Furthermore, the central retinal vessels could be visualized. Intravenous gadolinium contrast reagent did not noticeably improve image quality. Conclusions: High-resolution 7-T MRI with a dedicated eye coil can provide unique high-resolution noninvasive images of retro-orbital and posterior ocular structural and vascular anatomy and is able to resolve structures as small as the central retina vein.

Original languageEnglish (US)
Pages (from-to)271-277
Number of pages7
JournalGraefe's Archive for Clinical and Experimental Ophthalmology
Volume251
Issue number1
DOIs
StatePublished - Jan 2013
Externally publishedYes

Fingerprint

Magnetic Resonance Imaging
Anatomy
Blood Vessels
Retina
Posterior Eye Segment
Anterior Eye Segment
Ophthalmic Artery
Retinal Vessels
Sclera
Choroid
Gadolinium
Artifacts
Veins
Head

Keywords

  • Magnetic resonance imaging
  • Orbital vessels
  • Surface coil

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

Cite this

Retrobulbar vasculature using 7-T magnetic resonance imaging with dedicated eye surface coil. / Christoforidis, John B; Wassenaar, Peter A.; Christoforidis, Greg A.; Ho, Vincent Y.; Knopp, Michael V.; Schmalbrock, Petra M.

In: Graefe's Archive for Clinical and Experimental Ophthalmology, Vol. 251, No. 1, 01.2013, p. 271-277.

Research output: Contribution to journalArticle

Christoforidis, John B ; Wassenaar, Peter A. ; Christoforidis, Greg A. ; Ho, Vincent Y. ; Knopp, Michael V. ; Schmalbrock, Petra M. / Retrobulbar vasculature using 7-T magnetic resonance imaging with dedicated eye surface coil. In: Graefe's Archive for Clinical and Experimental Ophthalmology. 2013 ; Vol. 251, No. 1. pp. 271-277.
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