Low-Scatter Radiography Using Computed Radiography : A New Concept in Improving Image Quality

Our aim in this study was to evaluate the effect of the grid variations on the imaging performance for a computed radiographic system under identical exposure condition. Digital radiographies using a 20-cm Lucite phantom were performed without grid and with grid ratios of 5:1, 8:1, 10:1, 12:1, and 14:1. The scatter fraction, the incident dose to the image receptor, the Wiener spectrum (WS), and the noise-equivalent quanta (NEQ) were measured. Visibility of low-contrast signals was evaluated using a contrast-detail phantom. The scatter fractions decreased considerably with an increase in the grid ratio. On the other hand, the WSs were increased (the noise property deteriorated) as the grid ratio increased due to a decreased incident dose to the image receptor under the identical exposure condition. The NEQs were improved as the grid ratio increased. The high grid ratios provided higher low-contrast detectability compared to the low grid ratios. Our results indicated that the removal of scattered radiation was very effective in improvement of the NEQ in the digital system under the identical exposure condition.

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Investigation of optimum anti-scatter grid selection for digital radiography: physical imaging properties and detectability of low-contrast signals

Tanaka

Naka

Saito

et al. 2012

Radiol Phys Technol

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Optimization of Patient Skin Dose and Image Quality for Hysterosalpingography(HSG)

Nagashima

Sano

Ikenaga

et al. 2001

Nippon Hoshasen Gijutsu Gakkai Zasshi

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Influence of X-ray Detector of Automatic Exposure Control Unit(AEC)on Digital Chest Radiography

Kawata

Ookubo

Hyoudou

et al. 2001

Nippon Hoshasen Gijutsu Gakkai Zasshi

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Low-Scatter Radiography Using Computed Radiography : A New Concept in Improving Image Quality

Abstract: Anew concept found successful for improving the image quality of computed radiography ( CR ) is presented ， It is shown theoretically and experimentally that radiographic contrast and sharpness can be improved by reduction

Cited by 3 publications

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Investigation of optimum anti-scatter grid selection for digital radiography: physical imaging properties and detectability of low-contrast signals

Investigation of optimum anti-scatter grid selection for digital radiography: physical imaging properties and detectability of low-contrast signals

Optimization of Patient Skin Dose and Image Quality for Hysterosalpingography(HSG)

Influence of X-ray Detector of Automatic Exposure Control Unit(AEC)on Digital Chest Radiography

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