Fig. 6From: Gamma detector dead time correction using Lambert W functionExtrinsic count rate measurement with point source. Measured count rates, R′ (kcps), vs. A (MBq) for extrinsic (LEHR collimator) measurements of a point source. LEHR 1 refers to the first, LEHR 2 to the second measurement, of detector 2 for both energy windows: OW (blue diamonds) and 99mTc (red squares)Back to article page