|Mammography Phototimer Consistency Testing Slabs.|
Better than PMMA for AEC calibration|
CIRS Phototimer Consistency Testing Slabs are designed for precise assessment of AEC system performance in accordance with American College of Radiology and MQSA recommendations. BR-12 (47% glandular / 53% adipose) is most commonly used but other glandular equivalencies are available. Unlike acrylic, these testing slabs are manufactured with very tight thickness tolerances and more accurately simulate real breast tissue over the range of energies used in mammography.
Mammography Artifact Evaluation Phantom
|The American College of Radiology and MQSA recommend a uniform 4 cm thick "high grade" cassette sized phantom for
evaluation of mammography artifacts as it is often difficult to identify artifacts based on clinical or standard phantom
CIRS has designed two phantoms to meet these recommendations. The small phantom measures 18 x 24 x 4 cm thick and the large phantom measures 24 x 30 x 4 cm thick.
Both are made from tissue equivalent BR-12 with a thickness tolerance of .01 mm and all phantoms are image tested and carefully screened for homogeneity and impurities. Other glandular equivalencies are available upon request.
Elemental Composition of CIRS BR121 Formula
C: 0.704 O: 0.169 H: 0.096 N: 0.019 Ca: 0.009 Cl: 0.0020
Density = 0.97
Calculated Attenuation Values2:
keV= 10 MU= 3.550
keV= 15 MU= 1.183
keV= 20 MU= 0.610
keV= 30 MU= 0.315
keV= 40 MU= 0.239
keV= 50 MU= 0.209
keV= 60 MU= 0.193
keV= 80 MU= 0.174
keV=100 MU= 0.163