A study on reliability of roentgenographic interpretation; An important of dual reading

The photofluorography is the single best method for mass survey for defection of chest diseases, especially for determination of the pulmonary tuberculosis. However, the reliability of photofluorography as a diagnostic method is mostly depend upon quality of films, reader's perceptual experiences and his knowledge on chest diseases, and upon the process of interpretation, i.e., interpretation by single or dual reading. A statistical analysis and discussion were made on the results of 1,394,581 photofluorograms in the mass survey which had carried out from 1969 to 1971. Results were as follows: 1. The ratio of positive cases to all examines shows a range of 1.45%- 4.05%. 2. The most frequent disease in the positive case was minimal pulmonary tuberculosis. 3. There it showed good expectancy for detecting positive cases at the second reading which was interpreted by experienced radiologist than at the first reading done by the other doctors. It gives an accent one an importance of dual reading by the experienced radiologist for the higher reliability in diagnosis of chest disease