Quantitative analysis of radiation dosage and image quality between digital breast tomosynthesis (DBT) with two-dimensional synthetic mammography and full-field digital mammography (FFDM)

Currently in diagnostic setting for breast cancer, FFDM and DBT are performed conjunctively. However, performing two imaging modalities may increase radiation exposure by double. Two-dimensional reconstructed images created from DBT with 2DSM, has a potential to replace conventional FFDM in concerni...

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Bibliographic Details
Published in:Clinical imaging 2019-05, Vol.55, p.12-17
Main Authors: Choi, Yoonmi, Woo, Ok-hee, Shin, Hye-sun, Cho, Kyu Ran, Seo, Bo Kyoung, Choi, Ga-Young
Format: Article
Language:English
Subjects:
2-Dimensional synthetic mammography
Breast cancer
Clarity
Diagnostic systems
Digital breast tomosynthesis
Digital imaging
Dosage
Dosimetry
Exposure
FDA approval
Full-field digital mammography
Image quality
Image reconstruction
Mammography
Medical imaging
Monte Carlo simulation
Patients
Quality
Quantitative analysis
Radiation
Radiation dosage
Radiation dose
Radiation effects
Radimetrics
Software
Studies
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Summary:Currently in diagnostic setting for breast cancer, FFDM and DBT are performed conjunctively. However, performing two imaging modalities may increase radiation exposure by double. Two-dimensional reconstructed images created from DBT with 2DSM, has a potential to replace conventional FFDM in concerning both radiation dosage and image quality. With increasing concerns for individual radiation exposure, studies analyzing radiation dosage in breast imaging modalities are needed. This study compared radiation dosage and image quality between DBT + 2DSM versus FFDM. 374 patients (mean age 52 years) who underwent both DBT and FFDM were retrospectively reviewed. Radiation dosage data were obtained by radiation dosage scoring and monitoring program Radimetrics (Bayer HealthCare, Whippany, NJ). Entrance dose and mean glandular doses in each breast were obtained for both modalities. To compare image quality of DBT + 2DSM and FFDM, a 5-point scoring system for lesion clarity was assessed. The parameters of radiation dosage (entrance dose, mean glandular dose) and image quality (lesion clarity scoring) were compared. For entrance dose, DBT had lower mean dosage (14.8 mGy) compared with FFDM (21.8 mGy, p-value 
ISSN:0899-7071
1873-4499
DOI:10.1016/j.clinimag.2019.01.014