Estimates of Average Glandular Dose with Auto-modes of X-ray Exposures in Digital Breast Tomosynthesis
Journal Title: Sultan Qaboos University Medical Journal - Year 2015, Vol 15, Issue 2
Abstract
Objectives: Te 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: Tis 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. Te 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-flter and auto-kilovolt modes. Results: Te 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. Te lowest AGD for the 50/50 phantom with auto-time was 0.97 mGy for 2D and 1.0 mGy for 3D. Conclusion: Te AGD values for both phantoms were lower against a high kilovolt peak and the use of auto-flter mode was more practical for quick acquisition while limiting the probability of operator error.
Authors and Affiliations
Izdihar Kamal| Diagnostic Imaging & Radiotherapy Programme, Faculty of Health Sciences, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia, Kanaga K. Chelliah| Diagnostic Imaging & Radiotherapy Programme, Faculty of Health Sciences, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia, Nawal Mustafa| KPJ Healthcare University College, Nilai, Malaysia
Keywords
Related Articles
- EP ID EP14571
- DOI -
- Views 354
- Downloads 12
Te State of Human Anatomy Teaching in the Medical Schools of Gulf Cooperation Council Countries Present and future perspectives “Anatomy is a science and it owes it to the practiceâ€â€¦. Anon
Available literature on medical education charts an emerging trend in the field of anatomy. In the past decade, assisted by innovations in informatics and the paradigm shift in medical education, the hands-on experience...
Men’s Health - How to do it
Asthma Clinics in Primary Healthcare Centres in Oman: Do they make a difference?
Objectives: This study aimed to determine the effect of newly established asthma clinics (ACs) on asthma management at primary healthcare centres (PHCs) in Oman. Methods: This retrospective crosssectional study was condu...
Evaluation of Mitotic Figures and Cellular and Nuclear Morphometry of Various Histopathological Grades of Oral Squamous Cell Carcinoma Comparative study using crystal violet and Feulgen stains
Objectives: Te objectives of this study were to quantitatively estimate the number of mitotic fgures (MFs) and evaluate the cellular and nuclear features of various histological grades of oral squamous cell carcinoma (O...
Interprofessional Education (IPE) Activity amongst Health Sciences Students at Sultan Qaboos University The time is now!
Historically, health professionals have been educated in profession-specifc institutions which provide limited opportunities for learning interprofessional (IP) skills. Many qualifed practitioners are therefore poorly...