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Table 7 The 34/66 calibration mixture example # 2

From: Effective radiation attenuation calibration for breast density: compression thickness influences and correction

34/66 calibration # 2

ts/t (cm)

5.3/5.8

5.1/5.6

4.5/5.0

4.1/4.6

3.7/4.3

3.4/4.0

2.9/3.5

Compression

force (dN)

3.0

4.0

5.0

6.0

9.0

10.0

12.0

PG (6%)

37.6 (0.7)

36.4(1.5)

37.6 (2.1)

37.3(2.7)

35.6 (3.2)

34.2 (3.6)

33.6 (4.0)

PGs (55%)

49.3(2.5)

49.8(1.5)

52.6(2.2)

53.7(2.8)

54.3(3.4)

54.3(4.5)

56.4(2.5)

PGs+5 (14%)

37.4(2.4)

37.6(1.4)

39.3(2.1)

39.5(2.6)

39.3 (3.1)

38.5 (3.6)

39.2 (2.4)

  1. Quantities were derived from the phantom shown in Figure 11 (left) after rotating it clockwise by 90 degrees (approximately) and re-imaging. It shows that the measurements and calibration are repeatable.
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