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An Exophthalmometer. An exophthalmometer is an instrument used for measuring the degree of forward displacement of the eye in exophthalmos.The device allows measurement of the forward distance of the lateral orbital rim to the front of the cornea. [1]
Exophthalmos (also called exophthalmus, exophthalmia, proptosis, or exorbitism) is a bulging of the eye anteriorly out of the orbit. Exophthalmos can be either bilateral (as is often seen in Graves' disease ) or unilateral (as is often seen in an orbital tumor).
Fish bone pierced in the upper esophagus. Right image without contrast medium, left image during swallowing with contrast medium. To obtain an image with any type of image detector the part of the patient to be X-rayed is placed between the X-ray source and the image receptor to produce a shadow of the internal structure of that particular part of the body.
Instruments used specially in radiology are as follows: [1] [2] [3] This list is incomplete; you can help by adding missing items. (August 2008) Instrument Uses
Pages in category "Measuring instruments" The following 200 pages are in this category, out of approximately 375 total. This list may not reflect recent changes .
The MDA established a risk-based framework for the classification of medical devices and a regulatory pathway for medical devices to get to the market, created a regulatory pathway for medical device clinical trials, and established several post-market requirements including manufacturer registration and device listing with the FDA, good ...
Many measurement devices outside this section may be used or at least become part of an identification process. For identification and content concerning chemical substances, see also Analytical chemistry , List of chemical analysis methods , and List of materials analysis methods .
Radiation safety authorities including the National Council on Radiation Protection and Measurements, The Health Physics Society and the American College of Radiology, have stated that there is no specific evidence that full-body scans are unsafe. [47] The Secure 1000 Backscatter X-ray scanner was developed in 1992 by Dr. Steve Smith. [9]