Above a minimum SNR threshold, the ability to detect a lesion using MRI is a function of the change in CNR of pre- and post-contrast images and the voxel size acquired.
As a first attempt at assessing this skill, we have created a de facto random effects model, where each clinician has their own threshold (and ability to compare with respect to that threshold) sampled, in turn, from a population threshold; it is that latter threshold that we estimate with our regression model.
Studies in which all of these measures are made in the same subjects are rare, and the extent to which individual differences in threshold, the ability to detect small increases in concentration, or perceived intensity affect pleasantness ratings has not been comprehensively studied.
You have to have a threshold of intellectual ability – but you need lots of other things, too".
Iran will continue to sit close to the nuclear threshold, retaining an ability to enrich uranium which, if it were to withdraw from the agreement, would allow it to create a bomb's worth of weapons-grade material in about a year.
Rankings obtained by iteratively applying this procedure are similar to those based on the average item information function (IIF) at the pass-fail ability threshold, IIF (θ=0), and the average information gain (IG).
One thing was clear: below 66%, the operation would have been a failure; it is indeed the threshold of the ability of Greece to utilize the Common Action Clauses (CAC) to force other bondholders to convert.
Our results suggest a homing ability threshold for A. femoralis between 200 and 400 m.
By optimizing the discrimi¬nation threshold, the discriminative ability of the score is high.
When BLyS levels are reduced below this critical threshold level, the ability to mount the autoimmune response fully (along with other B-cell and humoral responses) is impaired.
