It has been stated that radiological lesions with corresponding increased bone scan activity are lesions that alter skeletal metabolic activity and may therefore be of clinical importance.
This limitation is due to TRW classifying stateless communication as scan activity in situations where there is a lack of bi-directional communication [3].
These movies allow us to rapidly scan activity over the course of the day, making review of the images and detection of changes extremely time efficient.
Isotope scanning may present false-positive results: within the first postoperative year, increased scan activity may be present around 85 90 % of tibial and 60 65 % of femoral components in asymptomatic knees [23].
In the population of small-animal PET scans, 0.09% of voxels had negative values, and they were almost exclusively located in areas with no true activity, with a mean absolute negative activity of approximately 10−10 of the total scan activity.
TRW can be modified to avoid such permanent labelling, but this causes a significant increase in the computation and memory requirements [3], while still leaving open the ability for an attacker to delay being categorized as malicious by seeding scan activity with accesses to known servers.
