Local Diagnostic Reference Levels for Full-Field Digital Mammography and Digital Breast Tomosynthesis in a Tertiary Hospital in Malaysia

Local Diagnostic Reference Levels for Full-Field Digital Mammography and Digital Breast Tomosynthesis in a Tertiary Hospital in Malaysia

A set of national diagnostic reference levels (DRLs) was established in Malaysia for a range of breast thicknesses in 2013, but no updates for full-field digital mammography (FFDM) and digital breast tomosynthesis (DBT). Due to the increasing number of DBTs used and concern over radiation exposure,...

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Bibliographic Details
Published in:Healthcare (Basel) Vol. 10; no. 10; p. 1917
Main Authors: Mohd Norsuddin, Norhashimah, Segar, Sharveeni, Ravintaran, Rathieswari, Mohd Zain, Norhayati, Abdul Karim, Muhammad Khalis
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 30-09-2022
MDPI
Subjects:
average glandular dose
Breast cancer
Cancer
compressed breast thickness
Diagnosis
diagnostic reference level
digital breast tomosynthesis
full-field digital mammography
Mammography
Medical diagnosis
Methods
Oncology, Experimental
Radiation
Reference values (Medicine)
Values
Malaysia
Kuala Lumpur Malaysia
full-field digital mammography
digital breast tomosynthesis
average glandular dose
diagnostic reference level
compressed breast thickness
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Summary:A set of national diagnostic reference levels (DRLs) was established in Malaysia for a range of breast thicknesses in 2013, but no updates for full-field digital mammography (FFDM) and digital breast tomosynthesis (DBT). Due to the increasing number of DBTs used and concern over radiation exposure, this study aimed to explore and establish local diagnostic reference levels for FFDM and DBT in Malaysia health facilities at different compressed breast thickness (CBT) ranges. The CBT, kilovoltage peak (kVp), Entrance surface dose (ESD), and average glandular dose (AGD) were retrospectively extracted from the mammography Digital Imaging and Communications in Medicine (DICOM) header. The 75th and 95th percentile values were obtained for the AGD distribution of each mammography projection for three sets of CBT range. The difference in AGD values between FFDM and DBT at three CBT ranges was determined. The DRLs for FFDM were 1.13 mGy, 1.52 mGy, and 2.87 mGy, while DBT were 1.18 mGy, 1.88 mGy, and 2.78 mGy at CBT ranges of 20−39 mm, 40−59 mm, and 60−99 mm, respectively. The AGD of DBT was significantly higher than FFDM for both mammographic views (p < 0.005). All three CBT groups showed a significant difference in AGD values for FFDM and DBT (p < 0.005). The local DRLs from this study were lower than the national DRLs, with the AGD of FFDM significantly lower than DBT.
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ISSN:2227-9032
2227-9032
DOI:10.3390/healthcare10101917