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Study of 4 inorganic scintillating crystals for an operative gamma probe in radioguided surgery

S Salvador and J -L Guyonnet

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In case of lymphatic cancers, the sentinel lymph node technique is performed using a gamma probe for intraoperative radioguided surgery. The inorganic scintillating crystal gamma probe developed at IPHC was equipped with 4 fast decay time inorganic scintillators: YAP, LYSO, LaCl3 and LaBr3. Energy resolutions are compared experimentally with single photon radioisotopes for small crystal cylinders (4 mm diameter, 12 mm length). The 6.1% measured energy resolution at 511 keV demonstrates the great advantage to use the high photon yield LaBr3 crystal for detection of γ-ray coming from positron annihilation using β+ radiomarked molecules.

Keywords

Gamma detectors (scintillators, CZT, HPG, HgI etc)

Intra-operative probes

PACS

87.57.U- Nuclear medicine imaging

87.80.-y Biophysical techniques (research methods)

87.19.X- Diseases

29.40.Mc Scintillation detectors

87.53.-j Effects of ionizing radiation on biological systems

Subjects

Accelerators, beams and electromagnetism

Nuclear physics

Instrumentation and measurement

Biological physics

Medical physics

Particle physics and field theory

Dates

Issue 08 (August 2007)

Received 2 July 2007, accepted for publication 2 August 2007

Published 7 August 2007



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