Usefulness of MR Imaging in Children without Characteristic Clinical Findings of Duane’s Retraction Syndrome
Jae Hyoung Kima and
Jeong-Min Hwangb
a Departments of Radiology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Sungnam, Korea
b Departments of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Sungnam, Korea
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FIG 1. Normal abducens nerves.
A–C, Three axial MR images show the entire path of the right and left abducens nerves (arrows) as linear dark structures emerging from the pontomedullary sulcus (A), coursing in the superior oblique direction (B), and finally entering into the clivus (C).
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FIG 2. A 6-year-old boy with absence of right abducens nerve.
A, Nine-gaze photograph shows ocular versions demonstrating abduction deficit in the right eye.
B–D, Three axial MR images show the entire path of the left abducens nerve (arrows) as a linear dark structure emerging from the level of pontomedullary junction (A), coursing in the superior oblique direction (B), and finally entering into the clivus (C). The right abducens nerve is not identified.
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FIG 3. A 4-year-old girl with absence of right and left abducens nerves.
A, Nine-gaze photograph shows ocular versions demonstrating abduction deficit in both eyes.
B–D, Right and left abducens nerves are not identified on the three axial MR images obtained from the pontomedullary junction to the lower pons.
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