H/M ratio acquired with LE collimators exhibited highly significant linear correlations with the corresponding ratio obtained with ME collimators, both when contemplating each center separately (center a: H/M-LE = 0.42 × H/M-ME + 0.65, R 2 = 0.99, p < 0.001; Fig. 1 a; center b: H/M-LE = 0.40 × H/M-ME + 0.63, R 2 = 0.90, p = 0.003; Fig. 1 b) and when pooling the data of both centers together (H/M-LE = 0.41 × H/M-ME + 0.63, R 2 = 0.97, p < 0.001; Fig. 1 c).
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Imaging cardiac sympathetic innervation with MIBG: linear conversion of the heart-to-mediastinum ratio between different collimators.
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