New design of a structured CsI(Tl) screen for digital mammography

Vivek V. Nagarkar; Sameer V. Tipnis; Valeriy B. Gaysinskiy; Stuart R. Miller; Andrew Karellas; Srinivasan Vedantham

doi:10.1117/12.480249

New design of a structured CsI(Tl) screen for digital mammography

Vivek V. Nagarkar, Sameer V. Tipnis, Valeriy B. Gaysinskiy, Stuart R. Miller, Andrew Karellas, Srinivasan Vedantham

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

29 Scopus citations

Abstract

Columnar CsI(Tl) screens are now routinely used for digital x-ray imaging in a wide variety of applications such as mammography, dental radiography, and non-destructive testing. While commercially available CsI(Tl) screens exhibit excellent properties, it is possible to significantly improve their performance. Here, we report on a new design of a columnar CsI(Tl) screen. Specifically, columnar CsI(Tl) screens were subjected to mechanical pixelation for minimizing the long range spread of scintillation light within the film, thus enhancing spatial and contrast resolution, and increasing the detective quantum efficiency (DQE(f)) of the digital imaging detector. To date we have fabricated up to 200 μm thick pixelated CsI(Tl) screens for mammography, and characterized their performance using a CCD camera. This paper presents a comparison of the new pixelated CsI(Tl) screens, conventional columnar CsI(Tl) screens, and Gd₂O₂S(Tb) screens. The data show that pixelated screens substantially improve the DQE(f) of the digital imaging system.

Original language	English (US)
Pages (from-to)	541-546
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5030 II
DOIs	https://doi.org/10.1117/12.480249
State	Published - 2003
Externally published	Yes
Event	Medical Imaging 2003: Physics of Medical Imaging - San Diego, CA, United States Duration: Feb 16 2003 → Feb 18 2003

Keywords

CsI(Tl) scintillator screen
Digital radiography
Mammography

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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10.1117/12.480249

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title = "New design of a structured CsI(Tl) screen for digital mammography",

abstract = "Columnar CsI(Tl) screens are now routinely used for digital x-ray imaging in a wide variety of applications such as mammography, dental radiography, and non-destructive testing. While commercially available CsI(Tl) screens exhibit excellent properties, it is possible to significantly improve their performance. Here, we report on a new design of a columnar CsI(Tl) screen. Specifically, columnar CsI(Tl) screens were subjected to mechanical pixelation for minimizing the long range spread of scintillation light within the film, thus enhancing spatial and contrast resolution, and increasing the detective quantum efficiency (DQE(f)) of the digital imaging detector. To date we have fabricated up to 200 μm thick pixelated CsI(Tl) screens for mammography, and characterized their performance using a CCD camera. This paper presents a comparison of the new pixelated CsI(Tl) screens, conventional columnar CsI(Tl) screens, and Gd2O2S(Tb) screens. The data show that pixelated screens substantially improve the DQE(f) of the digital imaging system.",

keywords = "CsI(Tl) scintillator screen, Digital radiography, Mammography",

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year = "2003",

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AU - Nagarkar, Vivek V.

AU - Tipnis, Sameer V.

AU - Gaysinskiy, Valeriy B.

AU - Miller, Stuart R.

AU - Karellas, Andrew

AU - Vedantham, Srinivasan

PY - 2003

Y1 - 2003

N2 - Columnar CsI(Tl) screens are now routinely used for digital x-ray imaging in a wide variety of applications such as mammography, dental radiography, and non-destructive testing. While commercially available CsI(Tl) screens exhibit excellent properties, it is possible to significantly improve their performance. Here, we report on a new design of a columnar CsI(Tl) screen. Specifically, columnar CsI(Tl) screens were subjected to mechanical pixelation for minimizing the long range spread of scintillation light within the film, thus enhancing spatial and contrast resolution, and increasing the detective quantum efficiency (DQE(f)) of the digital imaging detector. To date we have fabricated up to 200 μm thick pixelated CsI(Tl) screens for mammography, and characterized their performance using a CCD camera. This paper presents a comparison of the new pixelated CsI(Tl) screens, conventional columnar CsI(Tl) screens, and Gd2O2S(Tb) screens. The data show that pixelated screens substantially improve the DQE(f) of the digital imaging system.

AB - Columnar CsI(Tl) screens are now routinely used for digital x-ray imaging in a wide variety of applications such as mammography, dental radiography, and non-destructive testing. While commercially available CsI(Tl) screens exhibit excellent properties, it is possible to significantly improve their performance. Here, we report on a new design of a columnar CsI(Tl) screen. Specifically, columnar CsI(Tl) screens were subjected to mechanical pixelation for minimizing the long range spread of scintillation light within the film, thus enhancing spatial and contrast resolution, and increasing the detective quantum efficiency (DQE(f)) of the digital imaging detector. To date we have fabricated up to 200 μm thick pixelated CsI(Tl) screens for mammography, and characterized their performance using a CCD camera. This paper presents a comparison of the new pixelated CsI(Tl) screens, conventional columnar CsI(Tl) screens, and Gd2O2S(Tb) screens. The data show that pixelated screens substantially improve the DQE(f) of the digital imaging system.

KW - CsI(Tl) scintillator screen

KW - Digital radiography

KW - Mammography

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New design of a structured CsI(Tl) screen for digital mammography

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Keywords

ASJC Scopus subject areas

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