Effects of quantum noise and binocular summation on dose requirements in stereoradiography
(2003) In Medical Physics 30(12). p.3061-3071- Abstract
In the case of a quantum-noise limited detector, signal detection theory suggests that stereoradiographic images can be acquired with one half of the per-image dose needed for a standard radiographic projection, as information from the two stereo images can be combined. Previously, film-screen stereoradiography has been performed using the same per-image dose as in projection radiography, i.e., doubling the total dose. In this paper, the assumption of a possible decrease in dose for stereoradiography was tested by a series of contrast-detail experiments, using phantom images acquired over a range of exposures. The number of visible details, the effective reduction of the dose, and the effective decrease in the threshold signal-to-noise... (More)
In the case of a quantum-noise limited detector, signal detection theory suggests that stereoradiographic images can be acquired with one half of the per-image dose needed for a standard radiographic projection, as information from the two stereo images can be combined. Previously, film-screen stereoradiography has been performed using the same per-image dose as in projection radiography, i.e., doubling the total dose. In this paper, the assumption of a possible decrease in dose for stereoradiography was tested by a series of contrast-detail experiments, using phantom images acquired over a range of exposures. The number of visible details, the effective reduction of the dose, and the effective decrease in the threshold signal-to-noise ratio were determined using human observers under several display and viewing conditions. These results were averaged over five observers and compared with multiple readings by a single observer and with the results of an additional observer with limited stereoscopic acuity. Experimental results show that the total dose needed to produce a stereoradiographic image pair is approximately 1.1 times the dose needed for a single projection in standard radiography, indicating that under these conditions the human visual system demonstrates almost ideal binocular summation.
(Less)
- author
- Maidment, Andrew D.A. ; Bakic, Predrag R. LU and Albert, Michael
- publishing date
- 2003-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Digital radiography, Dose, Human perception, Observer study, Stereoradiographic technique
- in
- Medical Physics
- volume
- 30
- issue
- 12
- pages
- 11 pages
- publisher
- American Association of Physicists in Medicine
- external identifiers
-
- pmid:14713072
- scopus:0347625754
- ISSN
- 0094-2405
- DOI
- 10.1118/1.1621869
- language
- English
- LU publication?
- no
- id
- bb8d981a-75fb-4d83-a604-1e81970a82e1
- date added to LUP
- 2020-11-07 13:23:40
- date last changed
- 2024-03-05 14:13:05
@article{bb8d981a-75fb-4d83-a604-1e81970a82e1,
abstract = {{<p>In the case of a quantum-noise limited detector, signal detection theory suggests that stereoradiographic images can be acquired with one half of the per-image dose needed for a standard radiographic projection, as information from the two stereo images can be combined. Previously, film-screen stereoradiography has been performed using the same per-image dose as in projection radiography, i.e., doubling the total dose. In this paper, the assumption of a possible decrease in dose for stereoradiography was tested by a series of contrast-detail experiments, using phantom images acquired over a range of exposures. The number of visible details, the effective reduction of the dose, and the effective decrease in the threshold signal-to-noise ratio were determined using human observers under several display and viewing conditions. These results were averaged over five observers and compared with multiple readings by a single observer and with the results of an additional observer with limited stereoscopic acuity. Experimental results show that the total dose needed to produce a stereoradiographic image pair is approximately 1.1 times the dose needed for a single projection in standard radiography, indicating that under these conditions the human visual system demonstrates almost ideal binocular summation.</p>}},
author = {{Maidment, Andrew D.A. and Bakic, Predrag R. and Albert, Michael}},
issn = {{0094-2405}},
keywords = {{Digital radiography; Dose; Human perception; Observer study; Stereoradiographic technique}},
language = {{eng}},
number = {{12}},
pages = {{3061--3071}},
publisher = {{American Association of Physicists in Medicine}},
series = {{Medical Physics}},
title = {{Effects of quantum noise and binocular summation on dose requirements in stereoradiography}},
url = {{http://dx.doi.org/10.1118/1.1621869}},
doi = {{10.1118/1.1621869}},
volume = {{30}},
year = {{2003}},
}