Evaluation of contrast in duplicated radiographs

Journal Article · Tue Nov 30 23:00:00 EST 1982 · Oral Surg., Oral Med., Oral Pathol.; (United States)

DOI:https://doi.org/10.1016/0030-4220(82)90086-X· OSTI ID:5855115

Thunthy, K H; Weinberg, R

This investigation evaluated changes in the contrast of duplicated radiographs made at different ultraviolet light exposures. Increasing ultraviolet light exposure had different effects on the duplicates of originals of different background densities. When correctly exposed, a duplicate radiograph enhanced contrast. When originals had the same contrast but different background densities, their duplicates did not have the same contrast. It was not possible to duplicate accurately all the different contrasts measured on an original. It was possible, however, to produce duplicates with all contrasts greater than those of the original.

• Research Organization: Louisiana State Univ. School of Dentistry, New Orleans
• OSTI ID: 5855115
• Journal Information: Oral Surg., Oral Med., Oral Pathol.; (United States), Journal Name: Oral Surg., Oral Med., Oral Pathol.; (United States) Vol. 54:6; ISSN OSOMA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
BIOMEDICAL RADIOGRAPHY
DIAGNOSTIC TECHNIQUES
IMAGE PROCESSING
IMAGES
MEDICINE
NUCLEAR MEDICINE
PHOTOCOPYING
PHOTOGRAPHIC FILMS
PROCESSING
RADIOLOGY