title: Evaluation of the mastascanelite image analysis system for measuring zones of inhibition in disc diffusion susceptibility tests.
abstract: In this evaluation a mastascanelite image analysis system is compared with manual measurement of disc diffusion inhibition zones. Data for 213 diverse organisms and a total of 1679 organism/antibiotic combinations gave an overall correlation coefficient of 0.988. The mean difference between readings was +0.425 mm, with 95% confidence limits of +/-2.94 mm, and the majority of scanned zones (97.51%) fell within +/-3 mm of the manual measurement. The mastascanelite system forms part of a laboratory suite and was found to be objective, accurate and rapid, reading and interpreting each plate in less than a second. Interfacing to the laboratory computer system facilitated data handling and performance control.
authors.affiliation: Department of Microbiology, Royal Hallamshire Hospital, Glossop Road, Sheffield S10 2JF, UK.
authors.forename: R E H
authors.initials: RE
authors.lastname: Clarke
authors.forename: T G
authors.initials: TG
authors.lastname: Winstanley
authors.forename: E J
authors.initials: EJ
authors.lastname: Ridgway
mesh_terms: D001419:Bacteria / Q000187:drug effects; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008826:Microbial Sensitivity Tests / Q000295:instrumentation / Q000379:methods*