Breast compression across consecutive examinations among females participating in BreastScreen Norway

Waade, Gunvor G.; Sebuødegård, Sofie; Hogg, Peter; Hofvind, Solveig

doi:10.1259/bjr.20180209

Cited by 8 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This could be explained by increased breast volume by age. 23 We also found that lower compression force and higher pressure were applied to women screened at the stationary unit, compared with the mobile unit. Women at the stationary unit had smaller breasts.…”

Section: Discussionmentioning

confidence: 69%

Screening at stationary versus mobile units in BreastScreen Norway

et al. 2019

Self Cite

View full text Add to dashboard Cite

Objective To compare breast characteristics, compression parameters, and early performance measures (rates of recall, screen-detected and interval breast cancer, and histopathologic tumour characteristics) for mammographic screening at a stationary versus mobile screening unit. Methods Results from 92,408 mammographic screening examinations performed as part of BreastScreen Norway during 2008–2017 at either a stationary ( n = 52,620) or mobile ( n = 39,788) unit in Hordaland county were compared using descriptive statistics and generalized estimating equations. A generalized estimating equation for a binary outcome was used to estimate crude and adjusted odds ratios with 95% confidence intervals for the outcomes of interest. Adjusted generalized estimating equation models included age, breast volume, and density grade as covariates. Results Screening at the stationary unit was performed on smaller breasts with higher mammographic density, using lower compression force but higher pressure than at the mobile unit. Using the stationary screening unit as reference, for women screened at the mobile unit, the adjusted odds ratio was: for recall 0.94 (95% CI: 0.87--1.01), screen-detected breast cancer 0.92 (95% CI: 0.78--1.10), and interval breast cancer 1.17 (95% CI: 0.83–1.64). Conclusions The quality of care did not differ for women screened at the stationary versus the mobile unit, but there were differences between the women who attended the two units. Sociodemographic factors should be included in future analyses to fully understand the risk of breast cancer among women residing in urban versus rural areas.

show abstract

Section: Discussionmentioning

confidence: 69%

Screening at stationary versus mobile units in BreastScreen Norway

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Breast size and density composition contribute to this variability and many women find the mammography examinations very painful [18][19][20][21]. Increased breast compression with each mammogram perceived as uncomfortable or painful may impact screening compliance [22][23][24].…”

Section: Breast Compression: the Nuisancementioning

confidence: 99%

“…A key component of mammographic image quality is adequate compression thickness [56], as decreased sharpness and image contrast occur in thicker breasts [57,58]. Additionally, thicker compressed breasts have increased overlap of structures, decreased uniformity of breast tissue displayed, and increased beam hardening [22,23]. A recent study showed that in light of the obesity epidemic, an increased body mass index was associated with greater compressed breast thickness, increased potential for motion, and resulted in decreased sharpness, and image contrast [59].…”

Section: Thick and Dense Breasts: Limitations Of Current Breast Imagingmentioning

confidence: 99%

Monochromatic X-rays: The future of breast imaging

Fishman

Rehani

2021

European Journal of Radiology

View full text Add to dashboard Cite

To present details about the innovative and disruptive technology of monochromatic X-rays and its application to breast imaging. Methods: To analyze results of studies done using a prototype system for breast imaging that generates monochromatic X-rays through fluorescence emission. To assess signal-to-noise ratio (SNR) as a measure of image quality at different doses in breast phantoms of different sizes and review the comparison of parameters with a standard mammography system. Results: Monochromatic X-rays reduce the radiation dose per mammogram by a factor of 5 to 10 times. For phantom simulating thick breast (9 cm), the SNR for monochromatic system was 2.6 times higher and the dose 4.2 times lower than the respective values obtained with the conventional system within the same 5 mm × 5 mm square area of the 100% glandular step wedge. For the conventional broadband system to equal the SNR of the monochromatic system, it would require a dose of 19 mGy, 29 times higher than the dose delivered by the monochromatic system. Contrast-enhanced digital mammography with monochromatic X-rays is shown to provide a simpler and more effective technique at substantially lower radiation dose. Conclusions: Lowering radiation dose by a factor of 5 to 10 while maintaining image quality implies a major reduction in total exposure from breast cancer screening and dramatically less risk of radiation-induced cancers in at-risk women. The high SNRs for very thick breast phantoms provide strong evidence that screening with lower breast compression is possible while maintaining image quality.

show abstract

“…7 Furthermore, for the individual woman, an equivalent degree of breast compression over consecutive rounds of screening is important to facilitate correct diagnosis by allowing radiologists to more easily track parenchymal changes. 8 Studies have shown that there are variations in how breast compression is applied by different radiographers, [9][10][11][12][13][14][15][16] but the extent to which breast compression is reproducible for a given woman between screening rounds and how that may affect the interpretation of mammography is unknown.…”

Section: Introductionmentioning

confidence: 99%

“…20 An important goal in screening mammography is achieving equivalent breast compressions across consecutive screening rounds for each individual woman, 8 but there is a lack of knowledge about the intra-and inter-rater reliability of breast compression and the factors affecting it. Breast compression has been investigated in terms of the use of compression force, compression pressure, and compressed breast thickness, 8 and several studies have shown that the execution of breast compression varies among radiographers. [9][10][11][12][13][14][15][16] A longitudinal mammogram assessment of three consecutive screening rounds at a breast center in the United Kingdom showed a significant variation in applied compression forces.…”

Section: Introductionmentioning

confidence: 99%

Intra- and inter-rater reliability of compressed breast thickness, applied force, and pressure distribution in screening mammography

Voigt

Bolejko

Dustler

2021

Acta Radiologica Open

View full text Add to dashboard Cite

Background Ensuring equivalent and reproducible breast compression between mammographic screening rounds is important for the diagnostic performance of mammography, yet the extent to which screening mammography positioning and compression is reproducible for the individual woman is unknown. Purpose To investigate the intra- and inter-rater reliability of breast compression in screening mammography. Materials and Methods Eleven breast-healthy women participated in the study. Two experienced radiographers independently positioned and compressed the breasts of each participant in two projections—right craniocaudal and left mediolateral oblique—and at two time points. The spatial pressure distribution on the compressed breast was measured using a pressure sensor matrix. Applied force, compressed breast thickness, force in field of view, contact area, mean pressure, and center of mass (anterio-posterior and mediolateral axes) were measured. The reliabilities of the measures between the time points for each radiographer (intra-rater reliability) and between the radiographers (inter-rater reliability) were analyzed using the intraclass correlation coefficient (ICC). Results Intra- and inter-rater reliabilities from both projections demonstrated good to excellent ICCs (≥0.82) for compressed breast thickness, contact area, and anterio-posterior center of mass. The other measures produced ICCs that varied from poor (≤0.42) to excellent (≥0.93) between time points and between radiographers. Conclusion Intra- and inter-rater reliability of breast compression was consistently high for compressed breast thickness, contact area, and anterio-posterior center of mass but low for mediolateral center of mass and applied force. Further research is needed to establish objective and clinically useful parameters for the standardization of breast compression.

show abstract

Breast compression across consecutive examinations among females participating in BreastScreen Norway

Abstract: Breast compression force, compression pressure and compressed breast thickness increased across consecutive screening examinations, which might be of influence for the females' experiences of discomfort and pain during the examination and for image quality.

Cited by 8 publications

References 27 publications

Screening at stationary versus mobile units in BreastScreen Norway

Screening at stationary versus mobile units in BreastScreen Norway

Monochromatic X-rays: The future of breast imaging

Intra- and inter-rater reliability of compressed breast thickness, applied force, and pressure distribution in screening mammography

Contact Info

Product

Resources

About