PMID: 107365Jan 1, 1979

The use of computerized axial x-ray-tomography (EMI-scan) in ophthalmology (author's transl)

Klinische Monatsblätter für Augenheilkunde
A BronnerH Ammerich

Abstract

There now exist protocols for specific scanning which make it possible to obtain tranverse sections of a few millimetres in thickness of the orbits and their contents, with minimum sweep and with a very low dose of radiation for the lens. Normal scanner anatomical findings in the orbit may thus be defined for the eyeball (outer coats, vitreous, lens) as well as retrobulbar structures (optic nerve, oculomotor muscles in particular). Intraocular tumours (e.g. retinoblastoma) are visible on enlarged scan films. The value of scannings lies above all in the determination of the site, size and shape of orbital lesions and, where applicable, their relations with neighbouring extra- and intra-cerebral structures. In addition, certain conditions such as exophthalmos during hyperthyroidism have characteristic scan findings. It nevertheless remains difficult to attempt to predict a histological diagnosis on the basis of scan findings, the risk of a false positive being particularly significant. Particular emphasis must be placed upon the contribution of techniques of treatment of the films obtained (enlargement, contrast media, histograms, lateral views) as well as the complementary use of other methods of radiological investigation (in p...Continue Reading

Related Concepts

Eye
Eye Abnormalities
Disorder of Eye
Eye Injuries
Graves Disease
Ocular Orbit
Orbital Neoplasms
Tomography, X-Ray Computerized Axial

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Systemic Juvenile Idiopathic Arthritis

Systemic juvenile idiopathic arthritis is a rare rheumatic disease that affects children. Symptoms include joint pain, but also fevers and skin rashes. Here is the latest on this disease.

Chromatin Regulation and Circadian Clocks

The circadian clock plays an important role in regulating transcriptional dynamics through changes in chromatin folding and remodelling. Discover the latest research on Chromatin Regulation and Circadian Clocks here.

Central Pontine Myelinolysis

Central Pontine Myelinolysis is a neurologic disorder caused most frequently by rapid correction of hyponatremia and is characterized by demyelination that affects the central portion of the base of the pons. Here is the latest research on this disease.

Myocardial Stunning

Myocardial stunning is a mechanical dysfunction that persists after reperfusion of previously ischemic tissue in the absence of irreversible damage including myocardial necrosis. Here is the latest research.

Pontocerebellar Hypoplasia

Pontocerebellar hypoplasias are a group of neurodegenerative autosomal recessive disorders with prenatal onset, atrophy or hypoplasia of the cerebellum, hypoplasia of the ventral pons, microcephaly, variable neocortical atrophy and severe mental and motor impairments. Here is the latest research on pontocerebellar hypoplasia.

Cell Atlas Along the Gut-Brain Axis

Profiling cells along the gut-brain axis at the single cell level will provide unique information for each cell type, a three-dimensional map of how cell types work together to form tissues, and insights into how changes in the map underlie health and disease of the GI system and its crosstalk with the brain. Disocver the latest research on single cell analysis of the gut-brain axis here.

Chronic Traumatic Encephalopathy

Chronic Traumatic Encephalopathy (CTE) is a progressive degenerative disease that occurs in individuals that suffer repetitive brain trauma. Discover the latest research on traumatic encephalopathy here.