Transient ischemic dilation with 18 F-flurpiridaz positron emission tomography: Establishing thresholds for a novel radiotracer.

This study suggests stress-specific reference thresholds for transient ischemic dilation using 18 F-flurpiridaz positron emission tomography in a large multicenter cohort.

positron emission tomography-derived transient ischemic dilation values were higher than those observed with Tc-99m single-photon emission computed tomography, varied by stress modality, and were influenced by postreconstruction filtering.

These findings highlight the importance of tracer-, stress-, and protocol-specific reference standards for accurate clinical interpretation of transient ischemic dilation.