scholarly journals Comparison of Mean Glandular Dose between Full-Field Digital Mammography and Digital Breast Tomosynthesis

Healthcare ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1758
Author(s):  
Kar Choon Teoh ◽  
Hanani Abdul Manan ◽  
Norhashimah Mohd Norsuddin ◽  
Iqbal Hussain Rizuana
Keyword(s):  
Digital Mammography ◽  
Digital Breast Tomosynthesis ◽  
Breast Tomosynthesis ◽  
Full Field ◽  
Mean Glandular Dose ◽  
Full Field Digital Mammography ◽  
Dose Monitoring ◽  
Significant Difference ◽  
Radiation Induced ◽  
Breast Thickness

Early detection of breast cancer is diagnosed using mammography, the gold standard in breast screening. However, its increased use also provokes radiation-induced breast malignancy. Thus, monitoring and regulating the mean glandular dose (MGD) is essential. The purpose of this study was to determine MGD for full-field digital mammography (FFDM) and digital breast tomosynthesis (DBT) in the radiology department of a single centre. We also analysed the exposure factors as a function of breast thickness. A total of 436 patients underwent both FFDM and DBT. MGD was auto calculated by the mammographic machine for each projection. Patients’ data included compressed breast thickness (CBT), peak kilovoltage (kVp), milliampere-seconds (mAs) and MGD (mGy). Result analysis showed that there is a significant difference in MGD between the two systems, namely FFDM and DBT. However, the MGD values in our centre were comparable to other centres, as well as the European guideline (<2.5 mGy) for a standard breast. Although DBT improves the clinical outcome and quality of diagnosis, the risk of radiation-induced carcinogenesis should not be neglected. Regular quality control testing on mammography equipment must be performed for dose monitoring in women following a screening mammography in the future.

scholarly journals Initial Experience with Combination Digital Breast Tomosynthesis Plus Full Field Digital Mammography or Full Field Digital Mammography Alone in the Screening Environment

2014 ◽  
Vol 4 ◽  
pp. 9 ◽  
Author(s):  
Stamatia Destounis ◽  
Andrea Arieno ◽  
Renee Morgan
Keyword(s):  
Breast Cancer ◽  
Digital Mammography ◽  
Digital Breast Tomosynthesis ◽  
Recall Rate ◽  
Screening Mammography ◽  
Breast Tomosynthesis ◽  
Full Field ◽  
Full Field Digital Mammography ◽  
Significant Difference ◽  
History Of

Objectives: Initial review of patients undergoing screening mammography imaged with a combination of digital breast tomosynthesis (DBT) plus full field digital mammography (FFDM) compared with FFDM alone. Materials and Methods: From June 2011 to December 2011, all patients presenting for routine screening mammography were offered a combination DBT plus FFDM exam. Under institutional review board approval, we reviewed 524 patients who opted for combination DBT plus FFDM and selected a sample group of 524 FFDM screening exams from the same time period for a comparative analysis. The χ2 (Chi-square) test was used to compare recall rates, breast density, personal history of breast cancer, and family history of breast cancer between the two groups. Results: Recall rate for FFDM, 11.45%, was significantly higher (P < 0001) than in the combination DBT plus FFDM group (4.20%). The biopsy rate in the FFDM group was 2.29% (12/524), with a cancer detection rate of 0.38% (2/524, or 3.8 per 1000) and positive predictive value (PPV) of 16.7% (2/12). The biopsy rate for the DBT plus FFDM group was 1.14% (n = 6/524), with a cancer detection rate 0.57% (n = 3/524, or 5.7 per 1000) and PPV of 50.0% (n = 3/6). Personal history of breast cancer in the FFDM group was significantly lower (P < 0.0001) than in the combination DBT plus FFDM group; 2.5% and 5.7%, respectively. A significant difference in family history of breast cancer (P < 0.0001) was found, with a higher rate in the combination DBT plus FFDM group (36.0% vs. 53.8%). There was a significant difference between the combination DBT plus FFDM group and FFDM alone group, when comparing breast density (P < 0.0147, 61.64% vs. 54.20% dense breasts, respectively) with a higher rate of dense breasts in the DBT plus FFDM group. In follow-up, one cancer was detected within one year of normal screening mammogram in the combination DBT plus FFDM group. Conclusion: Our initial experience found the recall rate in the combination DBT plus FFDM group was significantly lower than in the FFDM alone group, despite the fact that the combination DBT plus FFDM group had additional risk factors.

scholarly journals Assessment of Average Glandular Dose Received in Full-field Digital Mammography and Digital Breast Tomosynthesis

2020 ◽  
Author(s):  
Napat Ritlumlert ◽  
Sutthirak Tangruangkiat ◽  
Supannika Kawvised ◽  
Phornpailin Pairodsantikul ◽  
Phornpailin Pairodsantikul ◽  
...  
Keyword(s):  
Digital Mammography ◽  
Standard Dose ◽  
Digital Breast Tomosynthesis ◽  
Reference Points ◽  
Tube Voltage ◽  
Breast Tomosynthesis ◽  
Full Field ◽  
The Third ◽  
Full Field Digital Mammography ◽  
Breast Thickness

Objective: To assess the average glandular doses (AGD) from full-field digital mammography (FFDM) and digital breast tomosynthesis (DBT). Material and Methods: Radiographic exposure parameters target/filter, tube voltage, and tube current were collected from 50 patients. Patient information including age, breast thickness, entrance surface air kerma (ESAK) and AGD from the monitor display were also recorded. The tube outputs (tube voltage and tube loadings) at the reference points in both FFDM and DBT modes were measured. The AGD was calculated from ESAK by using the correction factors following the Technical Report Series no. 457 protocol. For the DBT mode, the AGD was calculated and corrected for the X-ray gantry rotation following the Dance et al. method. Results: The radiation doses to breasts in terms of ESAK and AGD from FFDM were 4.97±2.29 and 1.36±0.48 milligray (mGy) respectively. The third quartiles were 6.5 mGy and 1.67 mGy, findings which were lower than the standard Dose Reference Levels reported by the International Atomic Energy Agency recommendation (AGD 3 mGy/view for standard breast thickness with grid). For the DBT mode, ESAK and AGD were 6.49±2.10 mGy and 1.63±0.51 mGy. The third quartiles were 7.68 mGy and 1.81 mGy which were more than the FFDM mode by 23.0% and 17.0%, respectively. Conclusion: This study found that the AGD received from the DBT mode was higher than from the FFDM mode. Patients who underwent combination modes of mammographic examination increasingly received AGD up to 1.74 mGy. However, the AGD in our institute was still lower than the standard AGD recommendations.

scholarly journals Visualization of Breast Microcalcifications on Digital Breast Tomosynthesis and 2-Dimensional Digital Mammography Using Specimens

2017 ◽  
Vol 11 ◽  
pp. 117822341770338 ◽  
Author(s):  
Jieun Byun ◽  
Jee Eun Lee ◽  
Eun Suk Cha ◽  
Jin Chung ◽  
Jeoung Hyun Kim
Keyword(s):  
Image Quality ◽  
Digital Mammography ◽  
Digital Breast Tomosynthesis ◽  
Kappa Statistic ◽  
Breast Tomosynthesis ◽  
Full Field ◽  
Full Field Digital Mammography ◽  
Better Than

Purpose: The purpose of this study is to compare the visibility of microcalcifications of digital breast tomosynthesis (DBT) and full-field digital mammography (FFDM) using breast specimens. Materials And Methods: Thirty-one specimens’ DBT and FFDM were retrospectively reviewed by four readers. Results: The image quality of microcalcifications of DBT was rated as superior or equivalent in 71.0% by reader 1, 67.8% by reader 2, 64.5% by reader 3, and 80.6% by reader 4. The Fleiss kappa statistic for agreement among readers was 0.31. Conclusions: We suggest that image quality of DBT appears to be comparable with or better than FFDM in terms of revealing microcalcifications.

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