contrast compression - ορισμός. Τι είναι το contrast compression
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Τι (ποιος) είναι contrast compression - ορισμός

SUBSTANCE USED IN MEDICAL IMAGING TO ENHANCE THE CONTRAST OF STRUCTURES OR FLUIDS WITHIN THE BODY
Contrast media; Contrast Medium; Contrast agents; Contrast substance; Contrast material; Intravenous contrast; Contrast enhancement; Contrast medium

Contrast agent         
A contrast agent (or contrast medium) is a substance used to increase the contrast of structures or fluids within the body in medical imaging. Contrast agents absorb or alter external electromagnetism or ultrasound, which is different from radiopharmaceuticals, which emit radiation themselves.
contrast medium         
¦ noun Medicine a substance introduced into a part of the body in order to improve the visibility of internal structures during radiography.
Reverse-contrast typefaces         
  • Centaur]], based on 1470s Venetian printing. The narrowest part of the stroke is at top left/bottom right, so the axis is diagonal.
  • A Didone type, [[Bodoni]], from the late eighteenth century. The contrast has been increased and the axis of the contrast made more purely vertical.
  • access-date=14 August 2015}}</ref>}} The serifs have been thickened and the contrast is minimal.
  • French Clarendon type on a 1914 poster from [[Ljubljana]].
  • French Clarendon type (top) compared to a conventional Clarendon design.
  • French Clarendon wood type, showing its highly condensed design.
TYPE OF TYPEFACE OR CUSTOM LETTERING
Reverse-contrast typeface; Caslon's Italian; Caslon Italian
A reverse-contrast or reverse-stress letterform is a design in which the stress is reversed from the norm: a typeface or custom lettering where the horizontal lines are the thickest. This is the reverse of the vertical lines being the same width or thicker than horizontals, which is normal in Latin-alphabet writing and especially printing.

Βικιπαίδεια

Contrast agent

A contrast agent (or contrast medium) is a substance used to increase the contrast of structures or fluids within the body in medical imaging. Contrast agents absorb or alter external electromagnetism or ultrasound, which is different from radiopharmaceuticals, which emit radiation themselves. In x-ray imaging, contrast agents enhance the radiodensity in a target tissue or structure. In magnetic resonance imaging, contrast agents shorten (or in some instances increase) the relaxation times of nuclei within body tissues in order to alter the contrast in the image.

Contrast agents are commonly used to improve the visibility of blood vessels and the gastrointestinal tract.

The types of contrast agent are classified according their intended imaging modalities.