BJR
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Efstathopoulos, E P
Right arrow Articles by Panayiotakis, G
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Efstathopoulos, E P
Right arrow Articles by Panayiotakis, G
British Journal of Radiology 74 (2001),841-846 © 2001 The British Institute of Radiology

Full paper

A protocol-based evaluation of medical image digitizers

E P Efstathopoulos, MSc, L Costaridou, PhD, O Kocsis, MSc and G Panayiotakis, PhD

Department of Medical Physics, School of Medicine, University of Patras, GR 26500 Patras, Greece

Correspondence: George Panayiotakis

Medical film digitizers play an important transitory role as digital-to-analogue bridges in radiology. Their use requires performance evaluation to assure medical image quality. A complete quality control protocol is presented, based on a set of test objects adaptable to the specification of various digitizers. The protocol includes parameters such as uniformity, input–output response, noise, geometric distortion, spatial resolution, low contrast discrimination, film slippage and light leakage, as well as associated measurement methods. The applicability of the protocol is demonstrated with two types of medical film digitizers; a charge-coupled device (CCD) digitizer and a laser digitizer. The potential value of the protocol is also discussed.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
BJR DMFR IMAGING  ALL BIR JOURNALS 
Copyright © 2001 by the British Institute of Radiology.