Klinische Monatsblätter für Augenheilkunde
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Klin Monbl Augenheilkd · Apr 2015
Comparative StudyMeasurement of Optic Nerve Sheath Diameter: Differences between Methods? A Pilot Study.
Quantification of the optic nerve sheath diameter is a promising approach for the detection of elevated intracranial pressure. The comparability of current methods is unclear. The objective of this study was to assess the relationship between optic nerve sheath diameter as measured with computed tomography, magnetic resonance tomography and ultrasound in patients without known optic nerve disease or increased intracranial pressure. ⋯ The comparability of optic nerve sheath diameter measurements in patients without known optic nerve disease and assumed normal intracranial pressure appears to be given between computed tomography and magnetic resonance tomography, while comparability between ultrasound and computed tomography or magnetic resonance tomography seems to be less reliable.
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Retrobulbar anaesthesia is a valuable alternative not only for polymorbid and haemodynamically compromised patients. Complications are rare but may be devastating. ⋯ Based on the recent literature, the present review compares techniques, describes possible complications and in the absence of evidence-based studies provides suggestions for the handling of patients under thrombocyte aggregation inhibitor and vitamin K antagonist therapy and anticoagulation.
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Klin Monbl Augenheilkd · Dec 2014
Review[Ophthalmological imaging with ultrahigh field magnetic resonance tomography: technical innovations and frontier applications].
This review documents technical progress in ophthalmic magnetic resonance imaging (MRI) at ultrahigh fields (UHF, B(0) ≥ 7.0 T). The review surveys frontier applications of UHF-MRI tailored for high spatial resolution in vivo imaging of the eye, orbit and optic nerve. Early examples of clinical ophthalmic UHF-MRI including the assessment of melanoma of the choroid membrane and the characterisation of intraocular masses are demonstrated. A concluding section ventures a glance beyond the horizon and explores research promises along with future directions of ophthalmic UHF-MRI.