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Portal film quality: A multiple institutional study
Author(s) -
Reinstein L. E.,
Durham M.,
Tefft M.,
Yu A.,
Glicksman A. S.,
Eaton W.
Publication year - 1984
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.595527
Subject(s) - quality assurance , medical physics , quality (philosophy) , medicine , radiation therapy , image quality , nuclear medicine , computer science , radiology , artificial intelligence , external quality assessment , pathology , physics , quantum mechanics , image (mathematics)
The variation in quality of the several thousand portal films submitted to the Quality Assurance Review Center (QARC) has been substantial. To ascertain the nature and severity of this problem, a detailed study of “whole brain” portal films which were taken at 23 different radiotherapy departments for patients entered on three national leukemia studies was performed. Each film was analyzed in two ways: (a) independent subjective evaluation by four experienced radiotherapists and (b) measurement of objective parameters. Scores from 416 evaluations together with measured parameters were stored in a data base system for easy statistical manipulation. The dependence of perceived film quality on these objective parameters has been correlated and is the subject of this report.