Digital chest radiography with a large image intensifier: Evaluation of diagnostic performance and patient exposure

L. G. Månsson; S. Kheddache; D. Schlossman; J. Börjesson; E. Håkansson; S. Mattsson; Ulf Tylen

doi:10.1177/028418518903000401

Digital chest radiography with a large image intensifier: Evaluation of diagnostic performance and patient exposure

L. G. Månsson, S. Kheddache, D. Schlossman, J. Börjesson, E. Håkansson, S. Mattsson, Ulf Tylen

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A digital system for chest radiography based on a large image intensifier was compared with a conventional film-screen system. The diagnostic performance was evaluated with special reference to the digital monitor images with a modified version of receiver operating characteristic (ROC) analysis—free response ROC (FROC) analysis—on a chest equivalent phantom. Measurements of spatial resolution and energy imparted were also performed. The detectability of low-contrast objects as well as spatial resolution was better for the full-size film-screen radiographs than for both the digital monitor images and the 100 mm photofluorograms. The image-intensifier system has a potential for considerable dose savings in relation to the conventional technique provided that fluoroscopy is excluded in the positioning of the patients.

Original language	English (US)
Pages (from-to)	337-342
Number of pages	6
Journal	Acta Radiologica
Volume	30
Issue number	4
DOIs	https://doi.org/10.1177/028418518903000401
State	Published - 1989
Externally published	Yes

Keywords

Diagnostic radiology, observer performance
patient exposure
receiver operating characteristic curve (ROC)
spatial resolution
thorax, radiography, digital

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging

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10.1177/028418518903000401

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abstract = "A digital system for chest radiography based on a large image intensifier was compared with a conventional film-screen system. The diagnostic performance was evaluated with special reference to the digital monitor images with a modified version of receiver operating characteristic (ROC) analysis—free response ROC (FROC) analysis—on a chest equivalent phantom. Measurements of spatial resolution and energy imparted were also performed. The detectability of low-contrast objects as well as spatial resolution was better for the full-size film-screen radiographs than for both the digital monitor images and the 100 mm photofluorograms. The image-intensifier system has a potential for considerable dose savings in relation to the conventional technique provided that fluoroscopy is excluded in the positioning of the patients.",

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AU - Schlossman, D.

AU - Börjesson, J.

AU - Håkansson, E.

AU - Mattsson, S.

AU - Tylen, Ulf

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