Abstract
Objectives
We compared the compression force, breast thickness, and glandular dose, as well as the severity of discomfort and women’s experience between the patient-assisted compression (PAC) and standard compression (SC) modes.
Materials and methods
We conducted a prospective randomized controlled study at Hospital del Mar in Barcelona, Spain. We included 448 asymptomatic women aged 50 to 69 years old, attending their screening round from December 2017 to December 2019. Mammograms included the two bilateral views. In each woman, one breast was studied with SC and the other with PAC. The mode used in each breast was selected following a randomized list. Compression force, breast thickness, and average glandular dose were obtained for each of the 1792 images. We also recorded the degree of discomfort and women’s experience, after mammogram acquisitions, using a predefined survey.
Results
Higher compression forces were obtained with PAC than with SC (99.27 N vs 83.25 N, p < 0.001). Breast thickness mode (56.11 mm vs 57.52 mm, p = 0.015) and glandular dose (1.34 mGy vs 1.37 mGy, p = 0.018) were lower in PAC. The discomfort score was slightly higher with PAC (mean 3.94 vs 3.69, p = 0.042), but in the satisfaction survey, more women reported that PAC caused less discomfort. Additionally, 63.2% of women (289/448) preferred PAC.
Conclusion
PAC achieved higher compression forces without impairing the other technical imaging parameters and enhanced women’s experience of screening mammography. We believe there were no clinically significant differences in the severity of discomfort between the two modes.
Key Points
• Self-compression allows higher compression forces than the standard compression mode.
• Self-compression does not affect technical imaging parameters.
• Self-compression improved women’s experience of screening mammography when standard compression was used on one breast and self-compression on the other.
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Abbreviations
- CC:
-
Craniocaudal
- kPa:
-
Kilopascals
- mGy:
-
Milligray
- MLO:
-
Mediolateral oblique
- mm:
-
Millimeters
- N:
-
Newtons
- NRS:
-
Numeric rating scale
- PAC:
-
Patient-assisted compression
- PCC:
-
Pearson’s correlation coefficient
- SC:
-
Standard compression
- SD:
-
Standard deviation
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Acknowledgements
We would like to thank all the women participating in the screening program, as well as the epidemiology team, technicians, and radiologists from the PSMAR breast screening program.
Funding
The study received funding from General Electric (GE Healthcare), but the funders had no role in the study design, data collection or analysis, decision to publish, or preparation of the manuscript.
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The scientific guarantor of this publication is Dr. Margarita Posso.
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The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
Statistics and biometry
Two of the authors have significant statistical expertise.
Informed consent
Written informed consent was obtained from all subjects (patients) in this study.
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Institutional Review Board approval was obtained.
Methodology
• prospective
• randomized controlled trial
• performed at one institution
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Institution from which the work originated:
IMIM, Hospital del Mar Medical Research Institute, Barcelona, Spain, Passeig Marítim 25-29, Barcelona 08003, Spain
Supplementary information
ESM 1
Supplementary Figure 1. Rigid compression paddles have two different sizes: 24 × 29.8 cm (on the right) and 19 × 23 cm (on the left), suitable for larger or smaller breasts. Supplementary Figure 2. Remote control has two push buttons: an upper one with the + symbol which allows participants to increase compression, and a lower one with the − symbol to reduce compression. Supplementary Table 1. Satisfaction Survey in a study comparing PAC vs. SC. Breast cancer screening program of Hospital del Mar, Barcelona, Spain, 2017-2019. Supplementary Table 2: Compression parameters and discomfort by compression mode stratified by each of the four projections. (DOCX 792 kb)
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Arenas, N., Alcantara, R., Posso, M. et al. Comparison of technical parameters and women’s experience between self-compression and standard compression modes in mammography screening: a single-blind randomized clinical trial. Eur Radiol 32, 7480–7487 (2022). https://doi.org/10.1007/s00330-022-08835-y
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DOI: https://doi.org/10.1007/s00330-022-08835-y