The impact of head miscentering on the eye lens dose in CT scanning: Phantoms study

C. Anam, T. Fujibuchi, T. Toyoda, N. Sato, F. Haryanto, R. Widita, I. Arif, G. Dougherty

Research output: Contribution to journalConference article

Abstract

The aim of this study was to evaluate the eye lens dose due to miscentering, either above or under the isocenter, and to assess the possibility of eye lens dose reduction by using miscentering phenomenon. We used two types of phantoms (head CTDI and adult anthropomorphic phantoms) and two types of detectors (pencil ionization chamber and radiophotoluminescence detectors). Measurements using the head CTDI phantom and pencil ionization chamber were performed at the upper peripheral hole of the CTDI phantom, whereas measurements using RPL detectors were performed on the surface of the eyes of the anthropomorphic phantom. Each measurement was performed with position phantoms at the isocenter and also at the positions ±2, ±4, and ±6 cm under and above the isocenter. The impact of miscentering on noise was also observed. Our results show that the dose to the eye decreases with increasing position of the phantoms from the isocenter, and increases with decreasing position of the phantoms from the isocenter. Miscentering above the isocenter can potentially reduce the dose to the eye lens, which is a sensitive organ to ionizing radiation.

Original languageEnglish
Article number012022
JournalJournal of Physics: Conference Series
Volume1204
Issue number1
DOIs
Publication statusPublished - May 7 2019
Event7th Asian Physics Symposium, APS 2017 - Bandung, Indonesia
Duration: Aug 29 2017Aug 31 2017

Fingerprint

lenses
dosage
scanning
ionization chambers
detectors
ionizing radiation
organs

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

The impact of head miscentering on the eye lens dose in CT scanning : Phantoms study. / Anam, C.; Fujibuchi, T.; Toyoda, T.; Sato, N.; Haryanto, F.; Widita, R.; Arif, I.; Dougherty, G.

In: Journal of Physics: Conference Series, Vol. 1204, No. 1, 012022, 07.05.2019.

Research output: Contribution to journalConference article

Anam, C. ; Fujibuchi, T. ; Toyoda, T. ; Sato, N. ; Haryanto, F. ; Widita, R. ; Arif, I. ; Dougherty, G. / The impact of head miscentering on the eye lens dose in CT scanning : Phantoms study. In: Journal of Physics: Conference Series. 2019 ; Vol. 1204, No. 1.
@article{0511664e710c4c53b79e69a15bed1d0d,
title = "The impact of head miscentering on the eye lens dose in CT scanning: Phantoms study",
abstract = "The aim of this study was to evaluate the eye lens dose due to miscentering, either above or under the isocenter, and to assess the possibility of eye lens dose reduction by using miscentering phenomenon. We used two types of phantoms (head CTDI and adult anthropomorphic phantoms) and two types of detectors (pencil ionization chamber and radiophotoluminescence detectors). Measurements using the head CTDI phantom and pencil ionization chamber were performed at the upper peripheral hole of the CTDI phantom, whereas measurements using RPL detectors were performed on the surface of the eyes of the anthropomorphic phantom. Each measurement was performed with position phantoms at the isocenter and also at the positions ±2, ±4, and ±6 cm under and above the isocenter. The impact of miscentering on noise was also observed. Our results show that the dose to the eye decreases with increasing position of the phantoms from the isocenter, and increases with decreasing position of the phantoms from the isocenter. Miscentering above the isocenter can potentially reduce the dose to the eye lens, which is a sensitive organ to ionizing radiation.",
author = "C. Anam and T. Fujibuchi and T. Toyoda and N. Sato and F. Haryanto and R. Widita and I. Arif and G. Dougherty",
year = "2019",
month = "5",
day = "7",
doi = "10.1088/1742-6596/1204/1/012022",
language = "English",
volume = "1204",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - The impact of head miscentering on the eye lens dose in CT scanning

T2 - Phantoms study

AU - Anam, C.

AU - Fujibuchi, T.

AU - Toyoda, T.

AU - Sato, N.

AU - Haryanto, F.

AU - Widita, R.

AU - Arif, I.

AU - Dougherty, G.

PY - 2019/5/7

Y1 - 2019/5/7

N2 - The aim of this study was to evaluate the eye lens dose due to miscentering, either above or under the isocenter, and to assess the possibility of eye lens dose reduction by using miscentering phenomenon. We used two types of phantoms (head CTDI and adult anthropomorphic phantoms) and two types of detectors (pencil ionization chamber and radiophotoluminescence detectors). Measurements using the head CTDI phantom and pencil ionization chamber were performed at the upper peripheral hole of the CTDI phantom, whereas measurements using RPL detectors were performed on the surface of the eyes of the anthropomorphic phantom. Each measurement was performed with position phantoms at the isocenter and also at the positions ±2, ±4, and ±6 cm under and above the isocenter. The impact of miscentering on noise was also observed. Our results show that the dose to the eye decreases with increasing position of the phantoms from the isocenter, and increases with decreasing position of the phantoms from the isocenter. Miscentering above the isocenter can potentially reduce the dose to the eye lens, which is a sensitive organ to ionizing radiation.

AB - The aim of this study was to evaluate the eye lens dose due to miscentering, either above or under the isocenter, and to assess the possibility of eye lens dose reduction by using miscentering phenomenon. We used two types of phantoms (head CTDI and adult anthropomorphic phantoms) and two types of detectors (pencil ionization chamber and radiophotoluminescence detectors). Measurements using the head CTDI phantom and pencil ionization chamber were performed at the upper peripheral hole of the CTDI phantom, whereas measurements using RPL detectors were performed on the surface of the eyes of the anthropomorphic phantom. Each measurement was performed with position phantoms at the isocenter and also at the positions ±2, ±4, and ±6 cm under and above the isocenter. The impact of miscentering on noise was also observed. Our results show that the dose to the eye decreases with increasing position of the phantoms from the isocenter, and increases with decreasing position of the phantoms from the isocenter. Miscentering above the isocenter can potentially reduce the dose to the eye lens, which is a sensitive organ to ionizing radiation.

UR - http://www.scopus.com/inward/record.url?scp=85066320492&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85066320492&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1204/1/012022

DO - 10.1088/1742-6596/1204/1/012022

M3 - Conference article

AN - SCOPUS:85066320492

VL - 1204

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012022

ER -