Comparison of NaI(Tl), CdTe, and HgI2 surgical probes: Physical characterization

H. B. Barber, Harrison H Barrett, T. S. Hickernell, D. P. Kwo, J. M. Woolfenden, G. Entine, C. O. Baccash

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The physical properties of three surgical probes containing different radiation detectors are compared: a NaI(Tl) scintillator with a flexible, fiber-optic light guide, and two semiconductor detectors that operate at room temperature, CdTe and HgI2. Also compared are spectra, energy resolutions, and counting efficiencies measured at a variety of gamma-ray energies between 30 and 1000 keV. The energy resolution of the NaI probe is substantially poorer than that of either semiconductor probe due in part to light losses in coupling the scintillator to the fiber optics. The semiconductor probes have complex spectral response due to charge-carrier trapping and K x-ray escape, and not all photoelectric interactions in these detectors contribute to the useful part of the photopeak. Above 120 keV the counting efficiency for the NaI probe is an order of magnitude higher than for the CdTe and HgI2 probes. Both energy resolution and counting efficiency are slightly better for the HgI2 probe than for the CdTe probe.

Original languageEnglish (US)
Pages (from-to)373-381
Number of pages9
JournalMedical Physics
Volume18
Issue number3
DOIs
StatePublished - 1991

Fingerprint

Semiconductors
Light
Gamma Rays
X-Rays
Radiation
Temperature
red mercuric iodide
thallium-doped sodium iodide

ASJC Scopus subject areas

  • Biophysics

Cite this

Barber, H. B., Barrett, H. H., Hickernell, T. S., Kwo, D. P., Woolfenden, J. M., Entine, G., & Baccash, C. O. (1991). Comparison of NaI(Tl), CdTe, and HgI2 surgical probes: Physical characterization. Medical Physics, 18(3), 373-381. https://doi.org/10.1118/1.596717

Comparison of NaI(Tl), CdTe, and HgI2 surgical probes : Physical characterization. / Barber, H. B.; Barrett, Harrison H; Hickernell, T. S.; Kwo, D. P.; Woolfenden, J. M.; Entine, G.; Baccash, C. O.

In: Medical Physics, Vol. 18, No. 3, 1991, p. 373-381.

Research output: Contribution to journalArticle

Barber, HB, Barrett, HH, Hickernell, TS, Kwo, DP, Woolfenden, JM, Entine, G & Baccash, CO 1991, 'Comparison of NaI(Tl), CdTe, and HgI2 surgical probes: Physical characterization', Medical Physics, vol. 18, no. 3, pp. 373-381. https://doi.org/10.1118/1.596717
Barber, H. B. ; Barrett, Harrison H ; Hickernell, T. S. ; Kwo, D. P. ; Woolfenden, J. M. ; Entine, G. ; Baccash, C. O. / Comparison of NaI(Tl), CdTe, and HgI2 surgical probes : Physical characterization. In: Medical Physics. 1991 ; Vol. 18, No. 3. pp. 373-381.
@article{d9805baf096e46ad91a3a319667fb36d,
title = "Comparison of NaI(Tl), CdTe, and HgI2 surgical probes: Physical characterization",
abstract = "The physical properties of three surgical probes containing different radiation detectors are compared: a NaI(Tl) scintillator with a flexible, fiber-optic light guide, and two semiconductor detectors that operate at room temperature, CdTe and HgI2. Also compared are spectra, energy resolutions, and counting efficiencies measured at a variety of gamma-ray energies between 30 and 1000 keV. The energy resolution of the NaI probe is substantially poorer than that of either semiconductor probe due in part to light losses in coupling the scintillator to the fiber optics. The semiconductor probes have complex spectral response due to charge-carrier trapping and K x-ray escape, and not all photoelectric interactions in these detectors contribute to the useful part of the photopeak. Above 120 keV the counting efficiency for the NaI probe is an order of magnitude higher than for the CdTe and HgI2 probes. Both energy resolution and counting efficiency are slightly better for the HgI2 probe than for the CdTe probe.",
author = "Barber, {H. B.} and Barrett, {Harrison H} and Hickernell, {T. S.} and Kwo, {D. P.} and Woolfenden, {J. M.} and G. Entine and Baccash, {C. O.}",
year = "1991",
doi = "10.1118/1.596717",
language = "English (US)",
volume = "18",
pages = "373--381",
journal = "Medical Physics",
issn = "0094-2405",
publisher = "AAPM - American Association of Physicists in Medicine",
number = "3",

}

TY - JOUR

T1 - Comparison of NaI(Tl), CdTe, and HgI2 surgical probes

T2 - Physical characterization

AU - Barber, H. B.

AU - Barrett, Harrison H

AU - Hickernell, T. S.

AU - Kwo, D. P.

AU - Woolfenden, J. M.

AU - Entine, G.

AU - Baccash, C. O.

PY - 1991

Y1 - 1991

N2 - The physical properties of three surgical probes containing different radiation detectors are compared: a NaI(Tl) scintillator with a flexible, fiber-optic light guide, and two semiconductor detectors that operate at room temperature, CdTe and HgI2. Also compared are spectra, energy resolutions, and counting efficiencies measured at a variety of gamma-ray energies between 30 and 1000 keV. The energy resolution of the NaI probe is substantially poorer than that of either semiconductor probe due in part to light losses in coupling the scintillator to the fiber optics. The semiconductor probes have complex spectral response due to charge-carrier trapping and K x-ray escape, and not all photoelectric interactions in these detectors contribute to the useful part of the photopeak. Above 120 keV the counting efficiency for the NaI probe is an order of magnitude higher than for the CdTe and HgI2 probes. Both energy resolution and counting efficiency are slightly better for the HgI2 probe than for the CdTe probe.

AB - The physical properties of three surgical probes containing different radiation detectors are compared: a NaI(Tl) scintillator with a flexible, fiber-optic light guide, and two semiconductor detectors that operate at room temperature, CdTe and HgI2. Also compared are spectra, energy resolutions, and counting efficiencies measured at a variety of gamma-ray energies between 30 and 1000 keV. The energy resolution of the NaI probe is substantially poorer than that of either semiconductor probe due in part to light losses in coupling the scintillator to the fiber optics. The semiconductor probes have complex spectral response due to charge-carrier trapping and K x-ray escape, and not all photoelectric interactions in these detectors contribute to the useful part of the photopeak. Above 120 keV the counting efficiency for the NaI probe is an order of magnitude higher than for the CdTe and HgI2 probes. Both energy resolution and counting efficiency are slightly better for the HgI2 probe than for the CdTe probe.

UR - http://www.scopus.com/inward/record.url?scp=0025882101&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025882101&partnerID=8YFLogxK

U2 - 10.1118/1.596717

DO - 10.1118/1.596717

M3 - Article

C2 - 1870478

AN - SCOPUS:0025882101

VL - 18

SP - 373

EP - 381

JO - Medical Physics

JF - Medical Physics

SN - 0094-2405

IS - 3

ER -