Estimates of average glandular dose with auto-modes of X-ray exposures in digital breast tomosynthesis

Izdihar Kamal, Kanaga Kumari Chelliah, Nawal Mustafa

Research output: Contribution to journalArticle

Abstract

Objectives: The aim of this research was to examine the average glandular dose (AGD) of radiation among different breast compositions of glandular and adipose tissue with auto-modes of exposure factor selection in digital breast tomosynthesis. Methods: This experimental study was carried out in the National Cancer Society, Kuala Lumpur, Malaysia, between February 2012 and February 2013 using a tomosynthesis digital mammography X-ray machine. The entrance surface air kerma and the half-value layer were determined using a 100H thermoluminescent dosimeter on 50% glandular and 50% adipose tissue (50/50) and 20% glandular and 80% adipose tissue (20/80) commercially available breast phantoms (Computerized Imaging Reference Systems, Inc., Norfolk, Virginia, USA) with auto-time, auto-filter and auto-kilovolt modes. Results: The lowest AGD for the 20/80 phantom with auto-time was 2.28 milliGray (mGy) for two dimension (2D) and 2.48 mGy for three dimensional (3D) images. The lowest AGD for the 50/50 phantom with auto-time was 0.97 mGy for 2D and 1.0 mGy for 3D. Conclusion: The AGD values for both phantoms were lower against a high kilovolt peak and the use of auto-filter mode was more practical for quick acquisition while limiting the probability of operator error.

Original languageEnglish
Pages (from-to)e292-e296
JournalSultan Qaboos University Medical Journal
Volume15
Issue number2
Publication statusPublished - 1 May 2015

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Mammography
Adipose Tissue
X-Rays
Breast
Imaging Phantoms
Three-Dimensional Imaging
Malaysia
Air
Radiation
Research
Neoplasms

Keywords

  • Breast
  • Mammography
  • Radiation dosage
  • Thermoluminescent dosimetry

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Estimates of average glandular dose with auto-modes of X-ray exposures in digital breast tomosynthesis. / Kamal, Izdihar; Chelliah, Kanaga Kumari; Mustafa, Nawal.

In: Sultan Qaboos University Medical Journal, Vol. 15, No. 2, 01.05.2015, p. e292-e296.

Research output: Contribution to journalArticle

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