نتایج جستجو برای: optic nerve hypoplasia

تعداد نتایج: 201064  

Journal: :iranian journal of otorhinolaryngology 0
jeanette saenz- pinones department of otorhinolaryngology, hospital puerta de hierro majadahonda, madrid, spain. yolanda garcia-hidalgo department of neuroradiology, hospital puerta de hierro majadahonda, madrid, spain. beatriz arellano-rodríguez department of otorhinolaryngology, hospital puerta de hierro majadahonda, madrid, spain.

cochlear nerve (cn) aplasia refers to the absence of a visible cn on oblique sagittal magnetic resonance images of the lateral aspect of the inner auditory canal (iac). magnetic resonance (mr) is the preferred technique in patients with sensorineural hearing loss and/or vertigo; however, computed tomography (ct) is used to evaluate the iac or facial nerve canal. three types of aplasia or hypopl...

Journal: :Investigative ophthalmology & visual science 2006
Don Julian De Silva Ken D Cocker Gordon Lau Simon T Clay Alistair R Fielder Merrick J Moseley

PURPOSE Few studies have assessed optic disk and retinal morphology in infants. Here the optic disk and optic disk-to-fovea distance were measured in preterm and full-term infants in vivo. METHODS Optic disk (OD) dimensions and the center-to-center distance between the OD and the macula were measured using digital imaging in infants undergoing routine ophthalmic examinations. Postmenstrual ag...

Journal: :Human molecular genetics 2003
Claus Rodemer Thanh-Phuong Thai Britta Brugger Thomas Kaercher Hauke Werner Klaus-Armin Nave Felix Wieland Karin Gorgas Wilhelm W Just

Although known for almost 80 years, the physiological role of plasmalogens (PLs), the major mammalian ether lipids (ELs), is still enigmatic. Humans that lack ELs suffer from rhizomelic chondrodysplasia punctata (RCDP), a peroxisomal disorder usually resulting in death in early childhood. In order to learn more about the functions of ELs, we generated a mouse model for RCDP by a targeted disrup...

Journal: :Investigative ophthalmology & visual science 2007
Key Hwan Lim Elizabeth C Engle Joseph L Demer

PURPOSE High-resolution magnetic resonance imaging (MRI) can now directly demonstrate innervation to extraocular muscles and quantify optic nerve size. A quantitative MRI technique was developed to study the oculomotor nerve (CN3) and applied to congenital fibrosis of extraocular muscles (CFEOM) and congenital oculomotor palsy. METHODS The subarachnoid portions of the CN3s were imaged with a ...

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