Breast, Mammography, Technical aspects, Screening, Cancer
D. Christiaens1, M. van Lier2, B. Claikens1; 1Ostend/BE, 2Amsterdam/NL
A total of 400 prior and 400 current mammographic images of 100 women were analyzed.
- 17 participants were excluded due to different exposure control modes for prior and current mammograms.
- Mammograms of 83 participants (332 FSCM and 332 PSCM images) were included for further analysis.
- Mean compression pressure increased from 11.56±6.4kPa to 12.78±3.4kPa (p<0.0001) after the introduction of the PSCM.
- The percentage of mammograms in the target pressure range of 8-14kP (target LED+-1 LED) increased from 45.8% to 57.5% with the use of PSCM.
- After introducing a compression paddle with a real-time pressure indicator,
46% of the participants experienced less pain,
45% felt no difference and 5% experienced more discomfort (5% unknown).
- Over-compression (>20kPa) reduced from 7.5% to 2.7%.
Extreme high pressures (>30 kPa) disappeared completely.
- The occurrence of under-compression (Pressure < 5kPa) disappeared completely (5.1% to 0%). Fig. 6
- The mean applied pressures between technicians were more comparable with this new compression technique with less variation.
- The mean glandular dose slightly increased (1.60±0.5mGy to 1.69±0.5mGy (p=0.0003)) probably due to an increased breast contact area (95.96±42.6cm2 to 102.20±46.6cm2 (p<0.0001)). Fig. 8