PMID: 2488151Feb 1, 1989Paper

Impact of image size on effectiveness of digital imaging systems

Journal of Digital Imaging
P D Fisher, G W Brauer

Abstract

Radiologists detect small diagnostic signals in radiographic film images by altering the distance between the eye and the image, effectively zooming in on a particular detail. Details thus enlarged are more perceptible to the viewer. Considering that conventional film images are nearly life-size, the potential for increasing the detection of small signals in this manner is high. Digital images, however, presented in video format are usually smaller than life-size, sometimes more than 50% smaller. While local enlargements using computer-based imaging systems are extremely useful, the radiologist cannot examine a whole, life-size image. The importance of the latter in the diagnostic process is revealed in detection studies using the same images of a chest phantom with small nodular inclusions, in different size formats. A clear positive correlation exists between overall image size and the detection of signals that are of a diagnostically-relevant size. While it is widely accepted that image fidelity is an important determinant in the clinical acceptability of digital radiography, digital image displays should also be large enough to display life-size images.

References

Aug 1, 1978·AJR. American Journal of Roentgenology·J E GrayB B Hobbs
Aug 1, 1977·AJR. American Journal of Roentgenology·C A KelseyJ Hallberg
Feb 1, 1989·Journal of Digital Imaging·G W BrauerG W Ritchie
Feb 1, 1987·AJR. American Journal of Roentgenology·G W SeeleyM P Capp

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Citations

Nov 1, 1990·Journal of Digital Imaging·U P Schmiedl, A H Rowberg
May 1, 1991·Journal of Digital Imaging·G E HoutekamerW J Stut
Jan 1, 1997·Seminars in Roentgenology·M T Freedman, D S Artz
Dec 22, 2007·American Journal of Respiratory Cell and Molecular Biology·Seyed Javad MoghaddamBurton F Dickey
Feb 20, 2016·Journal of Applied Clinical Medical Physics·Hideki FujitaHaruyuki Fukuda

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