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01.02.2012 | Head and Neck

Near-real time oculodynamic MRI: a feasibility study for evaluation of diplopia in comparison with clinical testing

verfasst von: Isabelle Berg, Anja Palmowski-Wolfe, Katja Schwenzer-Zimmerer, Cornelia Kober, Ernst-Wilhelm Radue, Hans-Florian Zeilhofer, Klaus Scheffler, Christoph Kunz, Carlos Buitrago-Tellez

Erschienen in: European Radiology | Ausgabe 2/2012

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Abstract

Objective

To demonstrate feasibility of near-real-time oculodynamic magnetic resonance imaging (od-MRI) in depicting extraocular muscles and correlate quantitatively the motion degree in comparison with clinical testing in patients with diplopia.

Methods

In 30 od-MRIs eye movements were tracked in the horizontal and sagittal plane using a a TrueFISP sequence with high temporal resolution. Three physicians graded the visibility of extraocular muscles by a qualitative scale. In 12 cases, the maximal monocular excursions in the horizontal and vertical direction of both eyes were measured in od-MRIs and a clinical test and correlated by the Pearson test.

Results

The medial and lateral rectus muscles were visible in the axial plane in 93% of the cases. The oblique, superior and inferior rectus muscles were overall only in 14% visible. Horizontal (p = 0,015) and vertical (p = 0,029) movements of the right eye and vertical movement of the left eye (p = 0,026) measured by od-MRI correlated positively to the clinical measurements.

Conclusions

Od-MRI is a feasible technique. Visualization of the horizontal/vertical rectus muscles is better than for the superior/inferior oblique muscle. Od-MRI correlates well with clinical testing and may reproduce the extent of eye bulb motility and extraocular muscle structural or functional deteriorations.

Key Points

• Oculodynamic MRI technique helps clinicians to assess eye bulb motility disorders

• MRI evaluation of eye movement provides functional information in cases of diplopia

• Oculodynamic MRI reproduces excursion of extraocular muscles with good correlation with clinical testing

• Dynamic MRI sequence supplements static orbital protocol for evaluation of motility disorders

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Titel: Near-real time oculodynamic MRI: a feasibility study for evaluation of diplopia in comparison with clinical testing
verfasst von: Isabelle Berg
Anja Palmowski-Wolfe
Katja Schwenzer-Zimmerer
Cornelia Kober
Ernst-Wilhelm Radue
Hans-Florian Zeilhofer
Klaus Scheffler
Christoph Kunz
Carlos Buitrago-Tellez
Publikationsdatum: 01.02.2012
Verlag: Springer-Verlag
Erschienen in: European Radiology / Ausgabe 2/2012
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-011-2232-1

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Near-real time oculodynamic MRI: a feasibility study for evaluation of diplopia in comparison with clinical testing