Comparison of five methods for the derivation of spectra for a constant potential dental X-ray unit

B. R. Lankipalli; W. D. McDavid; S. B. Dove; E. Wieckowska; R. G. Waggener; J. R. Mercier

doi:10.1038/sj.dmfr.4600629

Comparison of five methods for the derivation of spectra for a constant potential dental X-ray unit

B. R. Lankipalli, W. D. McDavid, S. B. Dove, E. Wieckowska, R. G. Waggener, J. R. Mercier

Comprehensive Dentistry

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

2 Scopus citations

Abstract

Objectives: To compare the diagnostic X-ray spectra derived by different methods for a constant potential dental X-ray unit. Materials and methods: Five methods of deriving X-ray spectra for a constant potential dental X-ray unit were compared: measurement by spectrometer using cadmium-zinc-telluride (CZT) detector, calculation by Monte Carlo simulation, calculation by two different, semi-empirical methods and estimation from transmission data. The dental X-ray set was a Heliodent MD unit (Sirona, Charlotte, NC, USA) operable at 60 or 70 kV. A semiconductor detector was used in the spectrometer measurements and an ionization chamber dosimeter in the transmission measurements. From the five methods, photon-fluence spectra were derived. Based on the photon-fluence spectra, average energies and transmission curves in aluminum were calculated. Results: For all five methods, the average energies were within 2.4% of one another. Comparison of the transmission curves showed an average difference in the range of 1 to 6%. Conclusion: All of the five methods of deriving spectra are in extremely good agreement with each other.

Original language	English (US)
Pages (from-to)	264-269
Number of pages	6
Journal	Dentomaxillofacial Radiology
Volume	30
Issue number	5
DOIs	https://doi.org/10.1038/sj.dmfr.4600629
State	Published - Dec 1 2001

Keywords

Radiography
Radiography, dental
X-rays

ASJC Scopus subject areas

Otorhinolaryngology
Radiology Nuclear Medicine and imaging
Dentistry(all)

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10.1038/sj.dmfr.4600629

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title = "Comparison of five methods for the derivation of spectra for a constant potential dental X-ray unit",

abstract = "Objectives: To compare the diagnostic X-ray spectra derived by different methods for a constant potential dental X-ray unit. Materials and methods: Five methods of deriving X-ray spectra for a constant potential dental X-ray unit were compared: measurement by spectrometer using cadmium-zinc-telluride (CZT) detector, calculation by Monte Carlo simulation, calculation by two different, semi-empirical methods and estimation from transmission data. The dental X-ray set was a Heliodent MD unit (Sirona, Charlotte, NC, USA) operable at 60 or 70 kV. A semiconductor detector was used in the spectrometer measurements and an ionization chamber dosimeter in the transmission measurements. From the five methods, photon-fluence spectra were derived. Based on the photon-fluence spectra, average energies and transmission curves in aluminum were calculated. Results: For all five methods, the average energies were within 2.4% of one another. Comparison of the transmission curves showed an average difference in the range of 1 to 6%. Conclusion: All of the five methods of deriving spectra are in extremely good agreement with each other.",

keywords = "Radiography, Radiography, dental, X-rays",

author = "Lankipalli, {B. R.} and McDavid, {W. D.} and Dove, {S. B.} and E. Wieckowska and Waggener, {R. G.} and Mercier, {J. R.}",

year = "2001",

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doi = "10.1038/sj.dmfr.4600629",

language = "English (US)",

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AU - Lankipalli, B. R.

AU - McDavid, W. D.

AU - Dove, S. B.

AU - Wieckowska, E.

AU - Waggener, R. G.

AU - Mercier, J. R.

PY - 2001/12/1

Y1 - 2001/12/1

N2 - Objectives: To compare the diagnostic X-ray spectra derived by different methods for a constant potential dental X-ray unit. Materials and methods: Five methods of deriving X-ray spectra for a constant potential dental X-ray unit were compared: measurement by spectrometer using cadmium-zinc-telluride (CZT) detector, calculation by Monte Carlo simulation, calculation by two different, semi-empirical methods and estimation from transmission data. The dental X-ray set was a Heliodent MD unit (Sirona, Charlotte, NC, USA) operable at 60 or 70 kV. A semiconductor detector was used in the spectrometer measurements and an ionization chamber dosimeter in the transmission measurements. From the five methods, photon-fluence spectra were derived. Based on the photon-fluence spectra, average energies and transmission curves in aluminum were calculated. Results: For all five methods, the average energies were within 2.4% of one another. Comparison of the transmission curves showed an average difference in the range of 1 to 6%. Conclusion: All of the five methods of deriving spectra are in extremely good agreement with each other.

AB - Objectives: To compare the diagnostic X-ray spectra derived by different methods for a constant potential dental X-ray unit. Materials and methods: Five methods of deriving X-ray spectra for a constant potential dental X-ray unit were compared: measurement by spectrometer using cadmium-zinc-telluride (CZT) detector, calculation by Monte Carlo simulation, calculation by two different, semi-empirical methods and estimation from transmission data. The dental X-ray set was a Heliodent MD unit (Sirona, Charlotte, NC, USA) operable at 60 or 70 kV. A semiconductor detector was used in the spectrometer measurements and an ionization chamber dosimeter in the transmission measurements. From the five methods, photon-fluence spectra were derived. Based on the photon-fluence spectra, average energies and transmission curves in aluminum were calculated. Results: For all five methods, the average energies were within 2.4% of one another. Comparison of the transmission curves showed an average difference in the range of 1 to 6%. Conclusion: All of the five methods of deriving spectra are in extremely good agreement with each other.

KW - Radiography

KW - Radiography, dental

KW - X-rays

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Comparison of five methods for the derivation of spectra for a constant potential dental X-ray unit

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