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Table 5 Percentage loss of energy window fraction per 100kcps increase in count rate

From: Gamma detector dead time correction using Lambert W function

 Energy windowIntrinsic (%)Point source 1 (%)Point source 2 (%)Scatter phantom 1(%)Scatter phantom 2 (%)
Det 199mTc (20%)− 9.5− 9.4− 7.5− 5.1− 8.4
99mTc (40%) − 6.9− 3.5− 3.5− 4.6
Det 299mTc (20%)− 7.7− 8.9− 9.7− 5.7− 9.5
99mTc (40%) − 6.6− 7.1− 3.9− 4.5
  1. Percentage loss of energy window fraction, for the 20% and 40% 99mTc energy windows, as determined from plots of energy window fraction vs. open window count rate. The loss is expressed in a percentage per 100 kcps increase in count rate