To measure MD, we used a computer-assisted threshold technique, Cumulus (Byng et al, 1996a).
Percent MD was assessed from digitized film-screen mammograms using a computer-assisted threshold technique.
The sizes of the mammographic dense area and the total area of the breast were determined by using a computer-assisted threshold method [ 32].
MD was measured using two computer-assisted threshold techniques (Cumulus [ 38] and UCSF custom mammographic density software [ 39]) from digitized images of prediagnostic film screening mammograms of the craniocaudal view.
A total of 1,319 women were followed up since birth in 1946 for whom a mammogram at age 50 years was retrieved, and the percentage mammographic density was measured using the computer-assisted threshold method for all 1,161 women.
Percent mammographic density was measured on the left cranio-caudal view (n=1014) or, if this was not available, on the left medio-lateral oblique view (n=147) using Cumulus, a computer-assisted threshold method (Byng et al, 1994) and calculated as a ratio of the absolute area of dense tissue to the sum of the absolute areas of dense and non-dense tissues.
Percent mammographic density, absolute areas of dense (parenchymal) and non-dense (fatty) tissues were measured on the left craniocaudal view (n = 1,014) or, if this was not available, on the left mediolateral oblique view (n = 147) using Cumulus, a computer-assisted threshold method [ 27].
KAG provided all raw data for analysis, contributed to discussion about establishing a threshold and assisted with production of the manuscript.
He stressed that support from the Millennium Challenge Account (MCA) Threshold Program has assisted the PCB immensely with training prosecutors and investigators.
One can observe from Fig. 3 that the laser assisted emission has pulse energy threshold, which corresponds to the switching of the emission mechanism from multiphoton to thermionic as the pulse energy increases.
To quantify the gene expression level of each sample, cycle-threshold point was compared by analysis software assisted with real-time PCR.
