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All current methods of assessing density have advantages and disadvantages, and no method is ideal.
Even though inter-observer differences exist when assessing density or parenchymal pattern manually, the question is how much impact this has on relative risk estimates for breast cancer?
The objectives of this study were to report inter-observer agreement regarding three subjective ways of assessing density and parenchymal pattern of the female breast and to investigate where disagreement primarily occurs.
Absolute and percentage mammographic densities were determined using the University of Southern California Madena computer-based threshold method of assessing density, a method that has been described and validated elsewhere [ 32].
It became evident that most of the assessors had not evaluated the stained sections with the naked eye (as recommended in the original instructions), though that is clearly useful method when assessing density of labeled NTs.
It is not clear at present to what extent these differences in results from longitudinal studies reflect differences in the menopausal status of the subjects studied, observer variation in the use of a qualitative method of assessing density, technical variations in mammography, or changes in the affected breast preceding the diagnosis of breast cancer.
Similar(53)
Thus, this paper uses Ground Penetrating Radar (GPR) tests to assess density and moisture content on asphalt mix slabs.
Unaided visually assessed density was the primary density measure.
Tice and colleagues [ 36] estimated adding the BI-RADS assessed density to the Gail model.
There is, however, a need to study this question with independent estimation of density in the same subjects, using four methods: the Cumulus software; visually assessed density from a MLO view alone; visually assessed density from the CC view alone; and visually assessed density from a MLO plus CC views.
To assess density, the reader outlined a region of interest (ROI), excluding the pectoralis muscle, prominent veins and fibrous strands.
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