Dose efficiency and the effects of resolution and noise on detail perceptibility in radiographic magnification

Louis K. Wagner; Gerald Cohen; WaiÃ¢â¬Âhoi Wong; Sharad R. Amtey

doi:10.1118/1.594902

Dose efficiency and the effects of resolution and noise on detail perceptibility in radiographic magnification

Louis K. Wagner, Gerald Cohen, WaiÃ¢â¬Âhoi Wong, Sharad R. Amtey

Cancer Systems Imaging

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

11 Scopus citations

Abstract

The detail signalÃ¢â‚¬â€œtoÃ¢â‚¬â€œnoise ratio model of radiographic imaging is quantitatively analyzed in terms of its accuracy in describing observer threshold perceptibility of radiographic detail. The model is found to adequately describe the effects of magnification, scatter radiation, and system resolution on observer threshold perceptibility. However, it is shown that the model does not apply in screen/film radiography for very low contrasts and high scatter conditions due to insufficient optical density contrast. The doseÃ¢â‚¬Â�toÃ¢â‚¬Â�information conversion efficiency of a radiographic imaging system is defined and the effects of magnification, scatter, resolution, image processing, detector efficiency, grids, patient table support, field size, and geometry on the dose efficiency of the imaging system are investigated.

Original language	English (US)
Pages (from-to)	24-32
Number of pages	9
Journal	Medical physics
Volume	8
Issue number	1
DOIs	https://doi.org/10.1118/1.594902
State	Published - Jan 1981

Keywords

BIOMEDICAL RADIOGRAPHY
EFFICIENCY
IMAGE PROCESSING
NOISE
RESOLUTION

ASJC Scopus subject areas

Biophysics
Radiology Nuclear Medicine and imaging

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abstract = "The detail signal{\~A}¢{\^a}‚¬{\^a}€{\oe}to{\~A}¢{\^a}‚¬{\^a}€{\oe}noise ratio model of radiographic imaging is quantitatively analyzed in terms of its accuracy in describing observer threshold perceptibility of radiographic detail. The model is found to adequately describe the effects of magnification, scatter radiation, and system resolution on observer threshold perceptibility. However, it is shown that the model does not apply in screen/film radiography for very low contrasts and high scatter conditions due to insufficient optical density contrast. The dose{\~A}¢{\^a}‚¬{\^A}�to{\~A}¢{\^a}‚¬{\^A}�information conversion efficiency of a radiographic imaging system is defined and the effects of magnification, scatter, resolution, image processing, detector efficiency, grids, patient table support, field size, and geometry on the dose efficiency of the imaging system are investigated.",

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AU - Cohen, Gerald

AU - Wong, WaiÃ¢â¬Âhoi

AU - Amtey, Sharad R.

PY - 1981/1

Y1 - 1981/1

N2 - The detail signalÃ¢â‚¬â€œtoÃ¢â‚¬â€œnoise ratio model of radiographic imaging is quantitatively analyzed in terms of its accuracy in describing observer threshold perceptibility of radiographic detail. The model is found to adequately describe the effects of magnification, scatter radiation, and system resolution on observer threshold perceptibility. However, it is shown that the model does not apply in screen/film radiography for very low contrasts and high scatter conditions due to insufficient optical density contrast. The doseÃ¢â‚¬Â�toÃ¢â‚¬Â�information conversion efficiency of a radiographic imaging system is defined and the effects of magnification, scatter, resolution, image processing, detector efficiency, grids, patient table support, field size, and geometry on the dose efficiency of the imaging system are investigated.

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KW - BIOMEDICAL RADIOGRAPHY

KW - EFFICIENCY

KW - IMAGE PROCESSING

KW - NOISE

KW - RESOLUTION

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Dose efficiency and the effects of resolution and noise on detail perceptibility in radiographic magnification

Abstract

Keywords

ASJC Scopus subject areas

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