latitude

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latitude

 [lat´ĭ-tood]
the recording capability of x-ray film.
contrast latitude the ability of a film to record differences in density.
film latitude the ability of an emulsion to record a wide range of densities.

lat·i·tude

(la'ti-tūd),
The range of light or x-ray exposure acceptable with a given photographic emulsion. See: latitude film.
[L. latitudo, width, fr. latus, wide]

latitude

Etymology: L, latitudio, breadth
the ability of an x-ray imaging system to produce acceptable images over a range of exposures. If a system has wide latitude, it is possible to image parts of the body that vary in thickness or density with only one exposure. A system of lesser latitude would require a lower exposure over the thin section and a greater exposure where the absorption was greater.

lat·i·tude

(lat'i-tūd)
The range of light or x-ray exposure acceptable with a given photographic emulsion.
[L. latitudo, width, fr. latus, wide]

lat·i·tude

(lat'i-tūd)
The range of light or x-ray exposure acceptable with a given photographic emulsion.
[L. latitudo, width, fr. latus, wide]

latitude (lat´itood),

n the range between the minimum and maximum film exposures to radiation that yields images of structures of which photographic density differences are discernible under normal viewing conditions. Latitude mainly varies directly with kilovoltage and inversely with contrast. See also contrast.
References in periodicals archive ?
Circles of longitude are demonstrated in the cases described above and illustrated by Figures 1 and 2.
In Longitude (originally published in 1995), Dava Sobel invented a new genre of popular historical writing: the short "biography" of a single, relatively obscure discovery in science, technology, or medicine.
And y - 53 times (longitude "branch" - longitude "account")
After attending an academic symposium on longitude, navigation east and west, Sobel was eager to tell the story of John Harrison, the eighteenth-century British clock-maker.
While he did receive encouragement from Astronomer Royal Edmund Halley (John Wood), the Board of Longitude was prejudiced against the problem being solved by a mechanical method.
The Board of Longitude was established in 1714 to encourage development of a `practical and useful' method for finding longitude at sea and adjudicate the award of a prize for success on a voyage to the West Indies.
To measure longitude meridians one needs to know what time it is aboard ship and also the time at the home port or another place of known longitude - at the very same moment.
Longitude is well-timed too, as the new Umberto Eco novel The Island of the Day Before features a protagonist marooned on an 18th-century vessel stocked with bizarre longitude instruments.
The signals indicate the latitude, longitude and elevation of the receiver.
NEW YORK -- Longitude LLC (Longitude), a wholly owned subsidiary of International Securities Exchange Holdings, Inc.
Travel Service, the largest Czech Republic-based airline, will add the Longitude to its fleet of four Cessna Citation Sovereign aircraft used for business jet charter services.