Portable chest imaging: comparison of storage phosphor digital, asymmetric screen-film, and conventional screen-film systems.

Abstract:

:The quality of chest images obtained with portable radiography was evaluated for a conventional screen-film system, a new asymmetric screen-film chest system, and computed radiography (CR). Sixty chest images were obtained in 20 patients in an intensive care unit. The CR system was ranked by all three evaluating radiologists as substantially better in overall diagnostic quality, interpretability of the lungs, and musculoskeletal detail and by two of the three observers as better for the visibility of catheters and lines. In the upper abdomen and mediastinum, there was not a clear preference. Standard deviations of film density were +/- 0.12, +/- 0.41, and +/- 0.39 for the CR, conventional, and asymmetric systems, respectively. For the same systems, phantom results indicated the relative lung contrast values were 1.2, 1.0, and 0.89, respectively. Similarly, the limiting resolution values in the lung were 2.0, 4.2, and 6.3 line pairs per millimeter. The CR system had twice the root-mean-square noise of the screen-film systems. Overall, the preferred system for portable chest imaging was the CR system.

journal_name

Radiology

journal_title

Radiology

authors

Niklason LT,Chan HP,Cascade PN,Chang CL,Chee PW,Mathews JF

doi

10.1148/radiology.186.2.8421740

subject

Has Abstract

pub_date

1993-02-01 00:00:00

pages

387-93

issue

2

eissn

0033-8419

issn

1527-1315

journal_volume

186

pub_type

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