Scanned projection radiography of the chest versus standard film radiography: a comparison of 250 cases.

Abstract

Two hundred fifty patients who had 240 pathological changes of the lungs or mediastinum were examined using both scanned projection radiography (SPR) and standard film radiography, and the diagnostic accuracy of the procedures was compared. The use of standard film radiography led to diagnostic findings in 90.1% of the cases, while 94% of the images obtained at SPR provided diagnostic findings. The equivalent performance and, in part, the slight superiority obtained with the digital technique is a result of the better contrast resolution for objects with diameters greater than 2 mm. A further improvement in the diagnosis of thoracic disease with digital radiography may occur because of the use of special mathematical algorithms for image reconstruction and with the use of dual-energy subtraction radiography rather than by an increase of spatial resolution.

Efficacy of daily bedside chest radiography as visualized by digital luminescence radiography

“…The positions of tubes, catheters and drains, the diaphragm and retrocardiac areas of the left lung can be assessed more confidently by DLR 19–24 . Digital luminescence technique has been demonstrated to be inferior to conventional film screen biplane chest radiography because of its lower spatial resolution 19,25 . The benefits of DLR in chest radiography to the intensive care patient have been postulated repeatedly but, as yet, neither the diagnostic nor therapeutic efficacy of the method have been definitely determined 26 …”

Radiology services for remote communities: cost minimisation study of telemedicine

“…Though some studies indicate that the diagnostic performance of digitised images and teleradiology systems is just as good as that of analogue images,10 19 20 21 22 23 24 others conclude that it results in an inferior performance 9 25 26 27 28 29. Such conflicting results seem to depend on the type of investigation, the spatial resolution of the systems,30 31 32 33 34 35 and various other factors 36 37 38 39 40 41…”

Multispectral single-scan lung imaging system: initial feasibility

“…Fundamental differences in x-ray attenuation phenomena, such as photon-electric absorption versus scattering, can be leveraged. Investigators have also looked into the potential of narrow-beam approaches for dual-energy chest imaging [10][11][12][13][14][15] . Barnes et al and Morgan et al report on the performance characteristics of a sandwiched pair of x-ray intensifying screens in scanned radiography 11,12 .…”

“…Brody et al research the use of a CT in a "scout-mode" approach 13 and Nudelman describes a slot-scanning design with an image-intensifier 14 . Scanned projection radiography was evaluated clinically in the 1980s, with Huebener reporting at least equivalent performance as compared to standard film-screen radiography 15 .…”