Comparison of a-Si:H/CsI flat-panel digital imaging systems with CR and CCD based systems - Image quality measurements

X. Liu; C. C. Shaw; X. J. Rong; M. Lemacks

doi:10.1117/12.430951

Comparison of a-Si:H/CsI flat-panel digital imaging systems with CR and CCD based systems - Image quality measurements

X. Liu, C. C. Shaw, X. J. Rong, M. Lemacks

Imaging Physics

Research output: Contribution to journal › Conference article › peer-review

9 Scopus citations

Abstract

The amorphous silicon/cesium iodide (a-Si:H/CsI:Tl) flat-panel imaging systems have recently become commercially available for both chest and mammographic imaging applications. This new detector technology is considered to be a significant improvement over CR techniques. In this work, we measured the image properties for two commercial flat-panel systems and compared them with those measured for CR and CCD based imaging systems. Image quality measurements related to detector properties such as linearity, MTF, NPS and DQE are presented and compared at selected chest and mammographic imaging techniques. Factors and issues related to these measurements are discussed. For chest imaging, the flat-panel system was found to have slightly lower MTFs but significantly higher DQEs than the CR system. For mammographic imaging, the CCD-based system was found to have the highest MTF, followed in order by the flat-panel and CR systems. The flat-panel system was found to have the highest DQEs, followed in the order by the CCD-based and CR systems. The DQEs of the flat-panel systems were found to increase with exposure while those of the CR systems decrease slightly with the exposure in both chest and mammographic imaging. The DQEs of the CCD-based system were found to vary little for exposures ranging from 1 to 30 mR.

Original language	English (US)
Pages (from-to)	389-398
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4320
DOIs	https://doi.org/10.1117/12.430951
State	Published - 2001
Event	Medical Imaging 2001: Physics of Medical Imaging - San Diego, CA, United States Duration: Feb 18 2001 → Feb 20 2001

Keywords

CCD
Computed radiography
Detective quantum efficiency
Digital mammography
Digital radiography
Flat panel
Modulation transfer function
Noise power spectra

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.430951

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title = "Comparison of a-Si:H/CsI flat-panel digital imaging systems with CR and CCD based systems - Image quality measurements",

abstract = "The amorphous silicon/cesium iodide (a-Si:H/CsI:Tl) flat-panel imaging systems have recently become commercially available for both chest and mammographic imaging applications. This new detector technology is considered to be a significant improvement over CR techniques. In this work, we measured the image properties for two commercial flat-panel systems and compared them with those measured for CR and CCD based imaging systems. Image quality measurements related to detector properties such as linearity, MTF, NPS and DQE are presented and compared at selected chest and mammographic imaging techniques. Factors and issues related to these measurements are discussed. For chest imaging, the flat-panel system was found to have slightly lower MTFs but significantly higher DQEs than the CR system. For mammographic imaging, the CCD-based system was found to have the highest MTF, followed in order by the flat-panel and CR systems. The flat-panel system was found to have the highest DQEs, followed in the order by the CCD-based and CR systems. The DQEs of the flat-panel systems were found to increase with exposure while those of the CR systems decrease slightly with the exposure in both chest and mammographic imaging. The DQEs of the CCD-based system were found to vary little for exposures ranging from 1 to 30 mR.",

keywords = "CCD, Computed radiography, Detective quantum efficiency, Digital mammography, Digital radiography, Flat panel, Modulation transfer function, Noise power spectra",

author = "X. Liu and Shaw, {C. C.} and Rong, {X. J.} and M. Lemacks",

year = "2001",

doi = "10.1117/12.430951",

language = "English (US)",

volume = "4320",

pages = "389--398",

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T1 - Comparison of a-Si:H/CsI flat-panel digital imaging systems with CR and CCD based systems - Image quality measurements

AU - Liu, X.

AU - Shaw, C. C.

AU - Rong, X. J.

AU - Lemacks, M.

PY - 2001

Y1 - 2001

N2 - The amorphous silicon/cesium iodide (a-Si:H/CsI:Tl) flat-panel imaging systems have recently become commercially available for both chest and mammographic imaging applications. This new detector technology is considered to be a significant improvement over CR techniques. In this work, we measured the image properties for two commercial flat-panel systems and compared them with those measured for CR and CCD based imaging systems. Image quality measurements related to detector properties such as linearity, MTF, NPS and DQE are presented and compared at selected chest and mammographic imaging techniques. Factors and issues related to these measurements are discussed. For chest imaging, the flat-panel system was found to have slightly lower MTFs but significantly higher DQEs than the CR system. For mammographic imaging, the CCD-based system was found to have the highest MTF, followed in order by the flat-panel and CR systems. The flat-panel system was found to have the highest DQEs, followed in the order by the CCD-based and CR systems. The DQEs of the flat-panel systems were found to increase with exposure while those of the CR systems decrease slightly with the exposure in both chest and mammographic imaging. The DQEs of the CCD-based system were found to vary little for exposures ranging from 1 to 30 mR.

AB - The amorphous silicon/cesium iodide (a-Si:H/CsI:Tl) flat-panel imaging systems have recently become commercially available for both chest and mammographic imaging applications. This new detector technology is considered to be a significant improvement over CR techniques. In this work, we measured the image properties for two commercial flat-panel systems and compared them with those measured for CR and CCD based imaging systems. Image quality measurements related to detector properties such as linearity, MTF, NPS and DQE are presented and compared at selected chest and mammographic imaging techniques. Factors and issues related to these measurements are discussed. For chest imaging, the flat-panel system was found to have slightly lower MTFs but significantly higher DQEs than the CR system. For mammographic imaging, the CCD-based system was found to have the highest MTF, followed in order by the flat-panel and CR systems. The flat-panel system was found to have the highest DQEs, followed in the order by the CCD-based and CR systems. The DQEs of the flat-panel systems were found to increase with exposure while those of the CR systems decrease slightly with the exposure in both chest and mammographic imaging. The DQEs of the CCD-based system were found to vary little for exposures ranging from 1 to 30 mR.

KW - CCD

KW - Computed radiography

KW - Detective quantum efficiency

KW - Digital mammography

KW - Digital radiography

KW - Flat panel

KW - Modulation transfer function

KW - Noise power spectra

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JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Medical Imaging 2001: Physics of Medical Imaging

Y2 - 18 February 2001 through 20 February 2001

ER -

Comparison of a-Si:H/CsI flat-panel digital imaging systems with CR and CCD based systems - Image quality measurements

Abstract

Keywords

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