Photodensitometric tracing of mach bands and its significance
10.3348/jkrs.1984.20.2.355
- Author:
Shi Joon YOO
;
Kyung Sik CHO
;
Heung Sik KANG
;
Byung Jae CHO
- Publication Type:Original Article
- MeSH:
Diagnosis;
Optical Illusions;
Retina
- From:Journal of the Korean Radiological Society
1984;20(2):355-360
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Mach bands, a visual phenomenon resulting from lateral inhibitory impulsess in the retina, are recognized aslucent or dense lines at the borders of different radiographic densities. A number of clinical situations have been described in which Mach bands may cause difficulty in radiographic diagnosis. Photodensitometric measurement of the film can differentiate the true change in film density from the Mach band which is an optical illusion. Authors present several examples of photodensitometric tracings of Mach bands, with the brief review of themechanism of their production.
