Fig. 2From: Characterisation of a hand-held CZT-based gamma camera for 177Lu imagingUniformity-correction matrices for 177Lu for each energy window and collimator (including open field). Values higher than 1.0 correspond to anode elements whose sensitivity is below the detector average. All uniformity matrices are shown using the same colour scale (lower right corner). Circles and letters A–E indicate positions of the five pixels selected for spectral analysis in Fig. 3Back to article page