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EFFECTIVE DOSE ESTIMATION FROM ORGAN DOSE MEASUREMENTS IN FAST-kV SWITCH DUAL ENERGY COMPUTED TOMOGRAPHY.

Publication ,  Journal Article
Raudabaugh, J; Nguyen, G; Lowry, C; Januzis, N; Colsher, J; Nelson, R; Yoshizumi, TT
Published in: Radiat Prot Dosimetry
December 1, 2018

The purpose of this study was to validate a novel approach to estimating effective dose (E) in 'fast-kV switch dual energy computed tomography' using MOSFET detectors. The effective energy of the combined dual energy environment was characterized with the dual energy CT scanner and then MOSFETs were calibrated matching to the effective energy of the dual energy CT beam with a conventional CT beam. The calibration method was then experimentally validated by comparing the dose between MOSFET and an ion chamber (IC) using a standard CTDI body phantom. The measured doses of the MOSFET and IC were 17.1 mGy ± 3.8% and 17.1 mGy ± 0.4%, respectively. To measure organ doses, an adult anthropomorphic phantom loaded with 18 MOSFET detectors was scanned using a standard fast-kV switch dual energy abdomen/pelvis CT protocol. E was calculated by applying ICRP 103 tissue weighting factors as well as partial volume correction factors for organs that were not completely covered by the protocol field-of-view. E from the dual energy abdomen/pelvis CT was calculated to be 17.8 mSv ± 11.6%. This calculation was then compared to E from dose length product method, which yielded 14.62 mSv.

Duke Scholars

Published In

Radiat Prot Dosimetry

DOI

EISSN

1742-3406

Publication Date

December 1, 2018

Volume

182

Issue

3

Start / End Page

352 / 358

Location

England

Related Subject Headings

  • Tomography, X-Ray Computed
  • Radiometry
  • Radiography, Abdominal
  • Radiation Dosage
  • Phantoms, Imaging
  • Pelvis
  • Nuclear Medicine & Medical Imaging
  • Humans
  • Calibration
  • Body Burden
 

Citation

APA
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ICMJE
MLA
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Raudabaugh, J., Nguyen, G., Lowry, C., Januzis, N., Colsher, J., Nelson, R., & Yoshizumi, T. T. (2018). EFFECTIVE DOSE ESTIMATION FROM ORGAN DOSE MEASUREMENTS IN FAST-kV SWITCH DUAL ENERGY COMPUTED TOMOGRAPHY. Radiat Prot Dosimetry, 182(3), 352–358. https://doi.org/10.1093/rpd/ncy072
Raudabaugh, Justin, Giao Nguyen, Carolyn Lowry, Natalie Januzis, James Colsher, Rendon Nelson, and Terry T. Yoshizumi. “EFFECTIVE DOSE ESTIMATION FROM ORGAN DOSE MEASUREMENTS IN FAST-kV SWITCH DUAL ENERGY COMPUTED TOMOGRAPHY.Radiat Prot Dosimetry 182, no. 3 (December 1, 2018): 352–58. https://doi.org/10.1093/rpd/ncy072.
Raudabaugh J, Nguyen G, Lowry C, Januzis N, Colsher J, Nelson R, et al. EFFECTIVE DOSE ESTIMATION FROM ORGAN DOSE MEASUREMENTS IN FAST-kV SWITCH DUAL ENERGY COMPUTED TOMOGRAPHY. Radiat Prot Dosimetry. 2018 Dec 1;182(3):352–8.
Raudabaugh, Justin, et al. “EFFECTIVE DOSE ESTIMATION FROM ORGAN DOSE MEASUREMENTS IN FAST-kV SWITCH DUAL ENERGY COMPUTED TOMOGRAPHY.Radiat Prot Dosimetry, vol. 182, no. 3, Dec. 2018, pp. 352–58. Pubmed, doi:10.1093/rpd/ncy072.
Raudabaugh J, Nguyen G, Lowry C, Januzis N, Colsher J, Nelson R, Yoshizumi TT. EFFECTIVE DOSE ESTIMATION FROM ORGAN DOSE MEASUREMENTS IN FAST-kV SWITCH DUAL ENERGY COMPUTED TOMOGRAPHY. Radiat Prot Dosimetry. 2018 Dec 1;182(3):352–358.
Journal cover image

Published In

Radiat Prot Dosimetry

DOI

EISSN

1742-3406

Publication Date

December 1, 2018

Volume

182

Issue

3

Start / End Page

352 / 358

Location

England

Related Subject Headings

  • Tomography, X-Ray Computed
  • Radiometry
  • Radiography, Abdominal
  • Radiation Dosage
  • Phantoms, Imaging
  • Pelvis
  • Nuclear Medicine & Medical Imaging
  • Humans
  • Calibration
  • Body Burden