Dose profiles for lung and breast regions at prospective and retrospective CT coronary angiography using optically stimulated luminescence dosimeters on a 64-detector CT scanner

Yoshinori Funama, Katsuyuki Taguchi, Daisuke Utsunomiya, Seitaro Oda, Hiroo Murasaki, Yasuyuki Yamashita, Kazuo Awai

Research output: Contribution to journalArticle

Abstract

Purpose: The purpose of our study was to acquire dose profiles at critical organs of lung and breast regions using optically stimulated luminescence (OSL) dosimeters; assess the actual radiation dose delivered at retrospective and prospective computed tomography coronary angiography (CTCA). Materials and methods: Using a chest CT phantom we applied a prospectively-gated step-and-shoot- and a retrospectively-gated helical mode on a 64-detector row CT scanner. Retrospective scan mode was used with and without electrocardiogram (ECG) based tube current modulation. OSL dosimeters were used to measure dose profiles. In the both scan modes we acquired dose profiles and determined the mean and maximum dose in left lung and in left breast regions. Results: In prospective mode, the mean dose was 21.53 mGy in left lung- and 23.59 mGy in left breast region. With respect to the retrospective mode, the mean dose with tube current modulation was 38.63 mGy for left lung- and 46.02 mGy for left breast region, i.e. 0.56 and 0.55 times lower than the mean dose without modulation. Conclusion: The OSL dosimeter is useful for measurement of the actual radiation dose along z-axis at lung and breast regions in the prospective and the retrospective CTCA.

Original languageEnglish (US)
Pages (from-to)76-82
Number of pages7
JournalPhysica Medica
Volume28
Issue number1
DOIs
StatePublished - Jan 2012

Fingerprint

angiography
Luminescence
Coronary Angiography
breast
lungs
scanners
dosimeters
Breast
luminescence
dosage
Lung
detectors
profiles
Radiation
modulation
tomography
Electrocardiography
Thorax
tubes
electrocardiography

Keywords

  • CTCA
  • Dose profile
  • OSL dosimeter
  • Prospective mode
  • Retrospective mode

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging
  • Physics and Astronomy(all)

Cite this

Dose profiles for lung and breast regions at prospective and retrospective CT coronary angiography using optically stimulated luminescence dosimeters on a 64-detector CT scanner. / Funama, Yoshinori; Taguchi, Katsuyuki; Utsunomiya, Daisuke; Oda, Seitaro; Murasaki, Hiroo; Yamashita, Yasuyuki; Awai, Kazuo.

In: Physica Medica, Vol. 28, No. 1, 01.2012, p. 76-82.

Research output: Contribution to journalArticle

Funama, Yoshinori ; Taguchi, Katsuyuki ; Utsunomiya, Daisuke ; Oda, Seitaro ; Murasaki, Hiroo ; Yamashita, Yasuyuki ; Awai, Kazuo. / Dose profiles for lung and breast regions at prospective and retrospective CT coronary angiography using optically stimulated luminescence dosimeters on a 64-detector CT scanner. In: Physica Medica. 2012 ; Vol. 28, No. 1. pp. 76-82.
@article{bf2e4ba312a7476d88a963cb3b46fbab,
title = "Dose profiles for lung and breast regions at prospective and retrospective CT coronary angiography using optically stimulated luminescence dosimeters on a 64-detector CT scanner",
abstract = "Purpose: The purpose of our study was to acquire dose profiles at critical organs of lung and breast regions using optically stimulated luminescence (OSL) dosimeters; assess the actual radiation dose delivered at retrospective and prospective computed tomography coronary angiography (CTCA). Materials and methods: Using a chest CT phantom we applied a prospectively-gated step-and-shoot- and a retrospectively-gated helical mode on a 64-detector row CT scanner. Retrospective scan mode was used with and without electrocardiogram (ECG) based tube current modulation. OSL dosimeters were used to measure dose profiles. In the both scan modes we acquired dose profiles and determined the mean and maximum dose in left lung and in left breast regions. Results: In prospective mode, the mean dose was 21.53 mGy in left lung- and 23.59 mGy in left breast region. With respect to the retrospective mode, the mean dose with tube current modulation was 38.63 mGy for left lung- and 46.02 mGy for left breast region, i.e. 0.56 and 0.55 times lower than the mean dose without modulation. Conclusion: The OSL dosimeter is useful for measurement of the actual radiation dose along z-axis at lung and breast regions in the prospective and the retrospective CTCA.",
keywords = "CTCA, Dose profile, OSL dosimeter, Prospective mode, Retrospective mode",
author = "Yoshinori Funama and Katsuyuki Taguchi and Daisuke Utsunomiya and Seitaro Oda and Hiroo Murasaki and Yasuyuki Yamashita and Kazuo Awai",
year = "2012",
month = "1",
doi = "10.1016/j.ejmp.2011.01.003",
language = "English (US)",
volume = "28",
pages = "76--82",
journal = "Physica Medica",
issn = "1120-1797",
publisher = "Associazione Italiana di Fisica Medica",
number = "1",

}

TY - JOUR

T1 - Dose profiles for lung and breast regions at prospective and retrospective CT coronary angiography using optically stimulated luminescence dosimeters on a 64-detector CT scanner

AU - Funama, Yoshinori

AU - Taguchi, Katsuyuki

AU - Utsunomiya, Daisuke

AU - Oda, Seitaro

AU - Murasaki, Hiroo

AU - Yamashita, Yasuyuki

AU - Awai, Kazuo

PY - 2012/1

Y1 - 2012/1

N2 - Purpose: The purpose of our study was to acquire dose profiles at critical organs of lung and breast regions using optically stimulated luminescence (OSL) dosimeters; assess the actual radiation dose delivered at retrospective and prospective computed tomography coronary angiography (CTCA). Materials and methods: Using a chest CT phantom we applied a prospectively-gated step-and-shoot- and a retrospectively-gated helical mode on a 64-detector row CT scanner. Retrospective scan mode was used with and without electrocardiogram (ECG) based tube current modulation. OSL dosimeters were used to measure dose profiles. In the both scan modes we acquired dose profiles and determined the mean and maximum dose in left lung and in left breast regions. Results: In prospective mode, the mean dose was 21.53 mGy in left lung- and 23.59 mGy in left breast region. With respect to the retrospective mode, the mean dose with tube current modulation was 38.63 mGy for left lung- and 46.02 mGy for left breast region, i.e. 0.56 and 0.55 times lower than the mean dose without modulation. Conclusion: The OSL dosimeter is useful for measurement of the actual radiation dose along z-axis at lung and breast regions in the prospective and the retrospective CTCA.

AB - Purpose: The purpose of our study was to acquire dose profiles at critical organs of lung and breast regions using optically stimulated luminescence (OSL) dosimeters; assess the actual radiation dose delivered at retrospective and prospective computed tomography coronary angiography (CTCA). Materials and methods: Using a chest CT phantom we applied a prospectively-gated step-and-shoot- and a retrospectively-gated helical mode on a 64-detector row CT scanner. Retrospective scan mode was used with and without electrocardiogram (ECG) based tube current modulation. OSL dosimeters were used to measure dose profiles. In the both scan modes we acquired dose profiles and determined the mean and maximum dose in left lung and in left breast regions. Results: In prospective mode, the mean dose was 21.53 mGy in left lung- and 23.59 mGy in left breast region. With respect to the retrospective mode, the mean dose with tube current modulation was 38.63 mGy for left lung- and 46.02 mGy for left breast region, i.e. 0.56 and 0.55 times lower than the mean dose without modulation. Conclusion: The OSL dosimeter is useful for measurement of the actual radiation dose along z-axis at lung and breast regions in the prospective and the retrospective CTCA.

KW - CTCA

KW - Dose profile

KW - OSL dosimeter

KW - Prospective mode

KW - Retrospective mode

UR - http://www.scopus.com/inward/record.url?scp=83555172535&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=83555172535&partnerID=8YFLogxK

U2 - 10.1016/j.ejmp.2011.01.003

DO - 10.1016/j.ejmp.2011.01.003

M3 - Article

C2 - 21353800

AN - SCOPUS:83555172535

VL - 28

SP - 76

EP - 82

JO - Physica Medica

JF - Physica Medica

SN - 1120-1797

IS - 1

ER -