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Comparison of radiation doses between cone beam CT and multi detector CT: TLD measurements.

Publication ,  Journal Article
Kim, S; Yoshizumi, TT; Toncheva, G; Yoo, S; Yin, F-F
Published in: Radiat Prot Dosimetry
2008

In recent years, wide beam computed tomography (CT) technique has become standard in radiation oncology whereas there is little information about radiation dose assessments for the technique. A point dose measurement method was employed to assess the radiation doses of cone beams CT (CBCT) and multi detectors CT (MDCT). The radiation doses of both modalities were measured using thermoluminescence dosemeters (TLDs) in head and body CT phantoms. Four TLD chips were placed at the centre and each peripheral channel to measure the doses. From the measurements, the weighted CT dose index for CBCT (CTDI(w)(CBCT)) and volume CT dose index for MDCT (CTDI(vol)(MDCT)) were derived. In the results, the CTDI(w)(CBCT) was 89.7 +/- 4.0 mGy and the CTDI(vol)(MDCT) was 137.0 +/- 7.4 mGy for the head scan. For the body scan, they were 37.9 +/- 1.4 and 74.3 +/- 5.3 mGy, respectively. In conclusion, CTDI(w)(CBCT) for the head scan was 35% lower than CTDI(vol)(MDCT), and CTDI(w)(CBCT) for the body scan was also 49% lower than CTDI(vol)(MDCT).

Duke Scholars

Published In

Radiat Prot Dosimetry

DOI

ISSN

0144-8420

Publication Date

2008

Volume

132

Issue

3

Start / End Page

339 / 345

Location

England

Related Subject Headings

  • Tomography, X-Ray Computed
  • Thermoluminescent Dosimetry
  • Radiation Dosage
  • Phantoms, Imaging
  • Nuclear Medicine & Medical Imaging
  • Humans
  • 5106 Nuclear and plasma physics
  • 4206 Public health
  • 1117 Public Health and Health Services
  • 0299 Other Physical Sciences
 

Citation

APA
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MLA
NLM
Kim, S., Yoshizumi, T. T., Toncheva, G., Yoo, S., & Yin, F.-F. (2008). Comparison of radiation doses between cone beam CT and multi detector CT: TLD measurements. Radiat Prot Dosimetry, 132(3), 339–345. https://doi.org/10.1093/rpd/ncn305
Kim, Sangroh, Terry T. Yoshizumi, Greta Toncheva, Sua Yoo, and Fang-Fang Yin. “Comparison of radiation doses between cone beam CT and multi detector CT: TLD measurements.Radiat Prot Dosimetry 132, no. 3 (2008): 339–45. https://doi.org/10.1093/rpd/ncn305.
Kim S, Yoshizumi TT, Toncheva G, Yoo S, Yin F-F. Comparison of radiation doses between cone beam CT and multi detector CT: TLD measurements. Radiat Prot Dosimetry. 2008;132(3):339–45.
Kim, Sangroh, et al. “Comparison of radiation doses between cone beam CT and multi detector CT: TLD measurements.Radiat Prot Dosimetry, vol. 132, no. 3, 2008, pp. 339–45. Pubmed, doi:10.1093/rpd/ncn305.
Kim S, Yoshizumi TT, Toncheva G, Yoo S, Yin F-F. Comparison of radiation doses between cone beam CT and multi detector CT: TLD measurements. Radiat Prot Dosimetry. 2008;132(3):339–345.
Journal cover image

Published In

Radiat Prot Dosimetry

DOI

ISSN

0144-8420

Publication Date

2008

Volume

132

Issue

3

Start / End Page

339 / 345

Location

England

Related Subject Headings

  • Tomography, X-Ray Computed
  • Thermoluminescent Dosimetry
  • Radiation Dosage
  • Phantoms, Imaging
  • Nuclear Medicine & Medical Imaging
  • Humans
  • 5106 Nuclear and plasma physics
  • 4206 Public health
  • 1117 Public Health and Health Services
  • 0299 Other Physical Sciences