Record Display for the EPA National Library Catalog


Main Title Variability in the Automatic Processing of Medical X-Ray Film.
Author Ferguse, John P. ; Schad, Warren W. ;
CORP Author Bureau of Radiological Health, Rockville, Md.
Year Published 1970
Report Number DEP-70-13;
Stock Number PB-192 702
Additional Subjects ( Photographic film ; Processing) ; ( X-ray photography ; Photographic film) ; Automation ; Medicine ; Diagnostic agents ; Radiography ; X rays ; Health physics ; Public health ; Periodic variations ;
Library Call Number Additional Info Location Last
NTIS  PB-192 702 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 44p
Equally exposed films were developed in 26 automatic processors. Films were developed in 22 of these processors, one film per week for 3 consecutive weeks. The percent standard deviations of the film base-fogs, relative speeds, and average gradients were respectively 18, 12, and 4 percent. Films were developed in the other four processors on a daily basis for one-month period. During this time, two of the processors required major servicing because of mechanical and chemical malfunctions. The percent standard deviations of the base-fog for the films developed in these two processors were 39 and 51 percent. For the other two processors, the percent standard deviations in the base-fog were both 11 percent. (Author)