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Estimation of the absorbed dose in simultaneous digital breast tomosynthesis and mechanical imaging

Bjerkén, Anna LU orcid ; Tomic, Hanna LU ; Zackrisson, Sophia LU ; Dustler, Magnus LU orcid ; Bakic, Predrag LU and Tingberg, Anders LU orcid (2024) In Journal of Medical Imaging 12(S1).
Abstract
Purpose: Use of mechanical imaging (MI) as complementary to digital mammography (DM), or in simultaneous digital breast tomosynthesis (DBT) and MI - DBTMI, has demonstrated the potential to increase the specificity of breast cancer screening and reduce unnecessary biopsies compared with DM. The aim of this study is to investigate the increase in the radiation dose due to the presence of an MI sensor during simultaneous image acquisition when automatic exposure control is used.

Approach: A radiation dose study was conducted on clinically available breast imaging systems with and without an MI sensor present. Our estimations were based on three approaches. In the first approach, exposure values were compared in paired clinical DBT... (More)
Purpose: Use of mechanical imaging (MI) as complementary to digital mammography (DM), or in simultaneous digital breast tomosynthesis (DBT) and MI - DBTMI, has demonstrated the potential to increase the specificity of breast cancer screening and reduce unnecessary biopsies compared with DM. The aim of this study is to investigate the increase in the radiation dose due to the presence of an MI sensor during simultaneous image acquisition when automatic exposure control is used.

Approach: A radiation dose study was conducted on clinically available breast imaging systems with and without an MI sensor present. Our estimations were based on three approaches. In the first approach, exposure values were compared in paired clinical DBT and DBTMI acquisitions in 97 women. In the second approach polymethyl methacrylate (PMMA) phantoms of various thicknesses were used, and the average glandular dose (AGD) values were compared. Finally, a rectangular PMMA phantom with a 45 mm thickness was used, and the AGD values were estimated based on air kerma measurements with an electronic dosemeter.

Results: The relative increase in exposure estimated from digital imaging and communications in medicine headers when using an MI sensor in clinical DBTMI was 11.9%±10.4. For the phantom measurements of various thicknesses of PMMA, the relative increases in the AGD for DM and DBT measurements were, on average, 10.7%±3.1 and 11.4%±3.0 , respectively. The relative increase in the AGD using the electronic dosemeter was 11.2%±<0.001 in DM and 12.2%±<0.001 in DBT. The average difference in dose between the methods was 11.5%±3.3.

Conclusions: Our measurements suggest that the use of simultaneous breast radiography and MI increases the AGD by an average of 11.5%±3.3. The increase in dose is within the acceptable values for mammography screening recommended by European guidelines. (Less)
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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Medical Imaging
volume
12
issue
S1
article number
S13003
publisher
SPIE
external identifiers
  • pmid:39055549
ISSN
2329-4302
DOI
10.1117/1.JMI.12.S1.S13003
project
AI together with MI in mammography and breast tomosynthesis
language
English
LU publication?
yes
id
6cba2f6c-082b-450a-a00e-998847be6db6
date added to LUP
2025-03-21 11:50:56
date last changed
2025-04-04 15:19:55
@article{6cba2f6c-082b-450a-a00e-998847be6db6,
  abstract     = {{Purpose: Use of mechanical imaging (MI) as complementary to digital mammography (DM), or in simultaneous digital breast tomosynthesis (DBT) and MI - DBTMI, has demonstrated the potential to increase the specificity of breast cancer screening and reduce unnecessary biopsies compared with DM. The aim of this study is to investigate the increase in the radiation dose due to the presence of an MI sensor during simultaneous image acquisition when automatic exposure control is used.<br/><br/>Approach: A radiation dose study was conducted on clinically available breast imaging systems with and without an MI sensor present. Our estimations were based on three approaches. In the first approach, exposure values were compared in paired clinical DBT and DBTMI acquisitions in 97 women. In the second approach polymethyl methacrylate (PMMA) phantoms of various thicknesses were used, and the average glandular dose (AGD) values were compared. Finally, a rectangular PMMA phantom with a 45 mm thickness was used, and the AGD values were estimated based on air kerma measurements with an electronic dosemeter.<br/><br/>Results: The relative increase in exposure estimated from digital imaging and communications in medicine headers when using an MI sensor in clinical DBTMI was 11.9%±10.4. For the phantom measurements of various thicknesses of PMMA, the relative increases in the AGD for DM and DBT measurements were, on average, 10.7%±3.1 and 11.4%±3.0 , respectively. The relative increase in the AGD using the electronic dosemeter was 11.2%±&lt;0.001 in DM and 12.2%±&lt;0.001 in DBT. The average difference in dose between the methods was 11.5%±3.3.<br/><br/>Conclusions: Our measurements suggest that the use of simultaneous breast radiography and MI increases the AGD by an average of 11.5%±3.3. The increase in dose is within the acceptable values for mammography screening recommended by European guidelines.}},
  author       = {{Bjerkén, Anna and Tomic, Hanna and Zackrisson, Sophia and Dustler, Magnus and Bakic, Predrag and Tingberg, Anders}},
  issn         = {{2329-4302}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{S1}},
  publisher    = {{SPIE}},
  series       = {{Journal of Medical Imaging}},
  title        = {{Estimation of the absorbed dose in simultaneous digital breast tomosynthesis and mechanical imaging}},
  url          = {{http://dx.doi.org/10.1117/1.JMI.12.S1.S13003}},
  doi          = {{10.1117/1.JMI.12.S1.S13003}},
  volume       = {{12}},
  year         = {{2024}},
}