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Table 4 Dead time values τEW (μs) determined using the graphical method

From: Gamma detector dead time correction using Lambert W function

DetectorEnergy windowIntrinsic τ (μs)Point source 1 τ (μs)Point source 2 τ (μs)Scatter phantom 1 τ (μs)Scatter phantom 2 τ (μs)
Det 1OW1.301.051.070.920.94
99mTc3.162.692.613.64.29
Det 2OW1.251.010.990.870.93
99mTc3.322.332.573.584.44
  1. Dead time values τEW (μs), as determined from the intrinsic and the extrinsic (LEHR, with NEMA scatter phantom) measurements, using the graphical method