Efficiency of Lu2SiO5:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions

S. David; C. Michail; I. Valais; D. Nikolopoulos; P. Liaparinos; N. Kalivas; I. Kalatzis; A. Toutountzis; N. Efthimiou; G. Loudos; I. Sianoudis; D. Cavouras; N. Dimitropoulos; C. D. Nomicos; I. Kandarakis; G. S. Panayiotakis

doi:10.1016/j.nima.2006.10.106

Efficiency of Lu₂SiO₅:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions

S. David
, C. Michail
, I. Valais
, D. Nikolopoulos
, P. Liaparinos
, N. Kalivas
, I. Kalatzis
, A. Toutountzis
, N. Efthimiou
, G. Loudos
, I. Sianoudis
, D. Cavouras
, N. Dimitropoulos
, C. D. Nomicos
, I. Kandarakis^*
, G. S. Panayiotakis

^*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

The aim of the present study was to examine the light emission efficiency of Lu₂SiO₅:Ce (LSO) powder scintillator under X-ray mammographic imaging conditions. Powder LSO scintillator has never been used in X-ray imaging. For the purposes of the present study, a 25 mg/cm² thick scintillating screen was prepared in our laboratory, by sedimentation of Lu₂SiO₅:Ce powder. Absolute luminescence efficiency measurements were performed within the range of X-ray tube voltages (22-49 kVp) used in mammographic applications. Parameters related to X-ray detection, i.e. the energy absorption efficiency (EAE) and the quantum detection efficiency (QDE) were calculated. A theoretical model, describing radiation and light transfer, was employed to fit experimental data and to estimate values of the intrinsic conversion efficiency and the light attenuation coefficients of the screen. The spectral compatibility of the LSO powder scintillator to mammographic X-ray films and to various electronic optical detectors was determined by performing light emission spectrum measurements and by taking into account the spectral sensitivity of the optical detectors. Results in the voltage range used in mammography showed that Lu₂SiO₅:Ce powder scintillator has approximately 10% higher values of QDE and 4.5% higher values of EAE than Gd₂O₂S:Tb.

Original language	English
Pages (from-to)	346-349
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	571
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nima.2006.10.106
Publication status	Published - 1-Feb-2007
Externally published	Yes

Keywords

Inorganic scintillators
LSO:Ce
Luminescence efficiency
Radiation detectors

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David, S., Michail, C., Valais, I., Nikolopoulos, D., Liaparinos, P., Kalivas, N., Kalatzis, I., Toutountzis, A., Efthimiou, N., Loudos, G., Sianoudis, I., Cavouras, D., Dimitropoulos, N., Nomicos, C. D., Kandarakis, I., & Panayiotakis, G. S. (2007). Efficiency of Lu₂SiO₅:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 571(1-2 SPEC. ISS.), 346-349. https://doi.org/10.1016/j.nima.2006.10.106

@article{3c8fec45c3564b84899d12923c87c750,

title = "Efficiency of Lu2SiO5:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions",

abstract = "The aim of the present study was to examine the light emission efficiency of Lu2SiO5:Ce (LSO) powder scintillator under X-ray mammographic imaging conditions. Powder LSO scintillator has never been used in X-ray imaging. For the purposes of the present study, a 25 mg/cm2 thick scintillating screen was prepared in our laboratory, by sedimentation of Lu2SiO5:Ce powder. Absolute luminescence efficiency measurements were performed within the range of X-ray tube voltages (22-49 kVp) used in mammographic applications. Parameters related to X-ray detection, i.e. the energy absorption efficiency (EAE) and the quantum detection efficiency (QDE) were calculated. A theoretical model, describing radiation and light transfer, was employed to fit experimental data and to estimate values of the intrinsic conversion efficiency and the light attenuation coefficients of the screen. The spectral compatibility of the LSO powder scintillator to mammographic X-ray films and to various electronic optical detectors was determined by performing light emission spectrum measurements and by taking into account the spectral sensitivity of the optical detectors. Results in the voltage range used in mammography showed that Lu2SiO5:Ce powder scintillator has approximately 10\% higher values of QDE and 4.5\% higher values of EAE than Gd2O2S:Tb.",

keywords = "Inorganic scintillators, LSO:Ce, Luminescence efficiency, Radiation detectors",

author = "S. David and C. Michail and I. Valais and D. Nikolopoulos and P. Liaparinos and N. Kalivas and I. Kalatzis and A. Toutountzis and N. Efthimiou and G. Loudos and I. Sianoudis and D. Cavouras and N. Dimitropoulos and Nomicos, \{C. D.\} and I. Kandarakis and Panayiotakis, \{G. S.\}",

year = "2007",

month = feb,

day = "1",

doi = "10.1016/j.nima.2006.10.106",

language = "English",

volume = "571",

pages = "346--349",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "ELSEVIER SCIENCE BV",

number = "1-2 SPEC. ISS.",

}

David, S, Michail, C, Valais, I, Nikolopoulos, D, Liaparinos, P, Kalivas, N, Kalatzis, I, Toutountzis, A, Efthimiou, N, Loudos, G, Sianoudis, I, Cavouras, D, Dimitropoulos, N, Nomicos, CD, Kandarakis, I & Panayiotakis, GS 2007, 'Efficiency of Lu₂SiO₅:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 571, no. 1-2 SPEC. ISS., pp. 346-349. https://doi.org/10.1016/j.nima.2006.10.106

Efficiency of Lu₂SiO₅:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions. / David, S.; Michail, C.; Valais, I. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 571, No. 1-2 SPEC. ISS., 01.02.2007, p. 346-349.

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

TY - JOUR

T1 - Efficiency of Lu2SiO5:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions

AU - David, S.

AU - Michail, C.

AU - Valais, I.

AU - Nikolopoulos, D.

AU - Liaparinos, P.

AU - Kalivas, N.

AU - Kalatzis, I.

AU - Toutountzis, A.

AU - Efthimiou, N.

AU - Loudos, G.

AU - Sianoudis, I.

AU - Cavouras, D.

AU - Dimitropoulos, N.

AU - Nomicos, C. D.

AU - Kandarakis, I.

AU - Panayiotakis, G. S.

PY - 2007/2/1

Y1 - 2007/2/1

N2 - The aim of the present study was to examine the light emission efficiency of Lu2SiO5:Ce (LSO) powder scintillator under X-ray mammographic imaging conditions. Powder LSO scintillator has never been used in X-ray imaging. For the purposes of the present study, a 25 mg/cm2 thick scintillating screen was prepared in our laboratory, by sedimentation of Lu2SiO5:Ce powder. Absolute luminescence efficiency measurements were performed within the range of X-ray tube voltages (22-49 kVp) used in mammographic applications. Parameters related to X-ray detection, i.e. the energy absorption efficiency (EAE) and the quantum detection efficiency (QDE) were calculated. A theoretical model, describing radiation and light transfer, was employed to fit experimental data and to estimate values of the intrinsic conversion efficiency and the light attenuation coefficients of the screen. The spectral compatibility of the LSO powder scintillator to mammographic X-ray films and to various electronic optical detectors was determined by performing light emission spectrum measurements and by taking into account the spectral sensitivity of the optical detectors. Results in the voltage range used in mammography showed that Lu2SiO5:Ce powder scintillator has approximately 10% higher values of QDE and 4.5% higher values of EAE than Gd2O2S:Tb.

AB - The aim of the present study was to examine the light emission efficiency of Lu2SiO5:Ce (LSO) powder scintillator under X-ray mammographic imaging conditions. Powder LSO scintillator has never been used in X-ray imaging. For the purposes of the present study, a 25 mg/cm2 thick scintillating screen was prepared in our laboratory, by sedimentation of Lu2SiO5:Ce powder. Absolute luminescence efficiency measurements were performed within the range of X-ray tube voltages (22-49 kVp) used in mammographic applications. Parameters related to X-ray detection, i.e. the energy absorption efficiency (EAE) and the quantum detection efficiency (QDE) were calculated. A theoretical model, describing radiation and light transfer, was employed to fit experimental data and to estimate values of the intrinsic conversion efficiency and the light attenuation coefficients of the screen. The spectral compatibility of the LSO powder scintillator to mammographic X-ray films and to various electronic optical detectors was determined by performing light emission spectrum measurements and by taking into account the spectral sensitivity of the optical detectors. Results in the voltage range used in mammography showed that Lu2SiO5:Ce powder scintillator has approximately 10% higher values of QDE and 4.5% higher values of EAE than Gd2O2S:Tb.

KW - Inorganic scintillators

KW - LSO:Ce

KW - Luminescence efficiency

KW - Radiation detectors

UR - https://www.scopus.com/pages/publications/33846504010

U2 - 10.1016/j.nima.2006.10.106

DO - 10.1016/j.nima.2006.10.106

M3 - Article

AN - SCOPUS:33846504010

SN - 0168-9002

VL - 571

SP - 346

EP - 349

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 1-2 SPEC. ISS.

ER -

David S, Michail C, Valais I, Nikolopoulos D, Liaparinos P, Kalivas N et al. Efficiency of Lu₂SiO₅:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2007 Feb 1;571(1-2 SPEC. ISS.):346-349. doi: 10.1016/j.nima.2006.10.106

Efficiency of Lu₂SiO₅:Ce (LSO) powder phosphor as X-ray to light converter under mammographic imaging conditions

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Keywords

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