Studies with a prototype high resolution PET scanner based on LSO-APD modules

B. Pichler; G. Boening; E. Lorenz; R. Mirzoyan; W. Pimpl; M. Schwaiger; S. I. Ziegler

Studies with a prototype high resolution PET scanner based on LSO-APD modules

B. Pichler, G. Boening, E. Lorenz, R. Mirzoyan, W. Pimpl, M. Schwaiger, S. I. Ziegler

TUM Emeriti of Excellence

Technical University of Munich

Research output: Contribution to conference › Paper › peer-review

3 Scopus citations

Abstract

Lutetium oxyorthosilicate (LSO) scintillation crystals coupled to avalanche photodiodes (APDs) have been proven to be an interesting detector module for high resolution positron emission tomography (PET). Compact detector modules were built to test their performance in a prototype tomograph. Each detector module consisted of sixteen 3.7×3.7×12.0 mm³ LSO crystals, which are one-to-one coupled to a two dimensional APD array (2×8 diodes, 3 mm diam., 4 mm spacing). The signals were read out by a low noise, fast, charge sensitive preamplifier, a 50 ns shaping amplifier and CAMAC electronic modules. Two detector modules were mounted on a rotatable gantry, which simulate a detector ring. Long term runs over 110 hours have shown that the detector remains stable over a long period of time. The energy resolution (FWHM) is 13.4% for 511 keV gamma rays and the intrinsic spatial resolution is 2.2 mm (FWHM). The gain dependence of the APD on temperature had been determined as 3.5%/K. The time resolution is 3.2±0.1 ns (FWHM). Phantom measurements showed the suitability of the new LSO/APD detector for high resolution animal PET.

Original language	English
Pages	1649-1653
Number of pages	5
State	Published - 1997
Event	Proceedings of the 1997 IEEE Nuclear Science Symposium - Albuquerque, NM, USA Duration: 9 Nov 1997 → 15 Nov 1997

Conference

Conference	Proceedings of the 1997 IEEE Nuclear Science Symposium
City	Albuquerque, NM, USA
Period	9/11/97 → 15/11/97

Cite this

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title = "Studies with a prototype high resolution PET scanner based on LSO-APD modules",

abstract = "Lutetium oxyorthosilicate (LSO) scintillation crystals coupled to avalanche photodiodes (APDs) have been proven to be an interesting detector module for high resolution positron emission tomography (PET). Compact detector modules were built to test their performance in a prototype tomograph. Each detector module consisted of sixteen 3.7×3.7×12.0 mm3 LSO crystals, which are one-to-one coupled to a two dimensional APD array (2×8 diodes, 3 mm diam., 4 mm spacing). The signals were read out by a low noise, fast, charge sensitive preamplifier, a 50 ns shaping amplifier and CAMAC electronic modules. Two detector modules were mounted on a rotatable gantry, which simulate a detector ring. Long term runs over 110 hours have shown that the detector remains stable over a long period of time. The energy resolution (FWHM) is 13.4% for 511 keV gamma rays and the intrinsic spatial resolution is 2.2 mm (FWHM). The gain dependence of the APD on temperature had been determined as 3.5%/K. The time resolution is 3.2±0.1 ns (FWHM). Phantom measurements showed the suitability of the new LSO/APD detector for high resolution animal PET.",

author = "B. Pichler and G. Boening and E. Lorenz and R. Mirzoyan and W. Pimpl and M. Schwaiger and Ziegler, {S. I.}",

year = "1997",

language = "English",

pages = "1649--1653",

note = "Proceedings of the 1997 IEEE Nuclear Science Symposium ; Conference date: 09-11-1997 Through 15-11-1997",

}

TY - CONF

T1 - Studies with a prototype high resolution PET scanner based on LSO-APD modules

AU - Pichler, B.

AU - Boening, G.

AU - Lorenz, E.

AU - Mirzoyan, R.

AU - Pimpl, W.

AU - Schwaiger, M.

AU - Ziegler, S. I.

PY - 1997

Y1 - 1997

N2 - Lutetium oxyorthosilicate (LSO) scintillation crystals coupled to avalanche photodiodes (APDs) have been proven to be an interesting detector module for high resolution positron emission tomography (PET). Compact detector modules were built to test their performance in a prototype tomograph. Each detector module consisted of sixteen 3.7×3.7×12.0 mm3 LSO crystals, which are one-to-one coupled to a two dimensional APD array (2×8 diodes, 3 mm diam., 4 mm spacing). The signals were read out by a low noise, fast, charge sensitive preamplifier, a 50 ns shaping amplifier and CAMAC electronic modules. Two detector modules were mounted on a rotatable gantry, which simulate a detector ring. Long term runs over 110 hours have shown that the detector remains stable over a long period of time. The energy resolution (FWHM) is 13.4% for 511 keV gamma rays and the intrinsic spatial resolution is 2.2 mm (FWHM). The gain dependence of the APD on temperature had been determined as 3.5%/K. The time resolution is 3.2±0.1 ns (FWHM). Phantom measurements showed the suitability of the new LSO/APD detector for high resolution animal PET.

AB - Lutetium oxyorthosilicate (LSO) scintillation crystals coupled to avalanche photodiodes (APDs) have been proven to be an interesting detector module for high resolution positron emission tomography (PET). Compact detector modules were built to test their performance in a prototype tomograph. Each detector module consisted of sixteen 3.7×3.7×12.0 mm3 LSO crystals, which are one-to-one coupled to a two dimensional APD array (2×8 diodes, 3 mm diam., 4 mm spacing). The signals were read out by a low noise, fast, charge sensitive preamplifier, a 50 ns shaping amplifier and CAMAC electronic modules. Two detector modules were mounted on a rotatable gantry, which simulate a detector ring. Long term runs over 110 hours have shown that the detector remains stable over a long period of time. The energy resolution (FWHM) is 13.4% for 511 keV gamma rays and the intrinsic spatial resolution is 2.2 mm (FWHM). The gain dependence of the APD on temperature had been determined as 3.5%/K. The time resolution is 3.2±0.1 ns (FWHM). Phantom measurements showed the suitability of the new LSO/APD detector for high resolution animal PET.

UR - http://www.scopus.com/inward/record.url?scp=0031385641&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0031385641

SP - 1649

EP - 1653

T2 - Proceedings of the 1997 IEEE Nuclear Science Symposium

Y2 - 9 November 1997 through 15 November 1997

ER -

Studies with a prototype high resolution PET scanner based on LSO-APD modules

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