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Visual scores. Examples of visual scores from 0 to 3 based on 99mTc-PYP planar (anterior, left anterior oblique, and lateral views), axial SPECT, and axial fused SPECT/CT images at 3 hours post-injection of radiotracer. H/CL ratio, heart to contralateral lung ratio; PYP, pyrophosphate; SPECT/CT, single-photon emission computed tomography/computed tomography.
