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Personal computer equipment for dental digital subtraction radiography vs. industrial computer equipment and conventional radiography
Author(s) -
Möystad Anne,
Svanæs Dagfinn B.,
Larheim Tore A.
Publication year - 1992
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.1992.tb01723.x
Subject(s) - radiography , subtraction , dental radiography , personal computer , digital radiography , medical physics , conventional radiography , computed radiography , nuclear medicine , medicine , dentistry , computer science , radiology , computer vision , mathematics , computer hardware , image quality , arithmetic , image (mathematics)
A “low‐cost” personal computer (PC) system used to digitize dental radiographs was tested by assessing the accuracy of its subtraction images versus those of “high‐cost” industrial equipment and conventional radiography. Subtraction images were made of artificial lesions in human femur bone and subsequently evaluated by students and teachers. The observations were analyzed in terms of true positive and false positive reports. “Low‐cost” and “high‐cost” subtraction images revealed only small differences in diagnostic accuracy. Compared to conventional radiography, the diagnostic accuracy of the subtraction images with the “low‐cost” PC system was significantly higher for all observers. The interexaminer variance was similar for the subtraction and the conventional images for both students and teachers, except for a significantly reduced interexaminer variance for the teachers concerning the true positive reports with the “low‐cost” PC subtraction technique.