Minimal starting time of data reconstruction for qualitative myocardial perfusion rubidium-82 positron emission tomography imaging.

Objective: Qualitative positron emission tomography (PET) myocardial perfusion imaging (MPI) scans are reconstructed with a delay after an injection of rubidium-82 (Rb) to ensure blood pool clearance and sufficient left ventricle to myocardium contrast. Our aim was to derive the minimal starting time of data reconstruction (STDR) after an injection of Rb for which the diagnostic value and image quality remained unaffected.

Materials And Methods: We retrospectively included 23 patients who underwent rest-stress Rb PET MPI using 740 MBq.

Minimizing rubidium-82 tracer activity for relative PET myocardial perfusion imaging.

Objectives: Recommended rubidium-82 activities for relative myocardial perfusion imaging (MPI) using present-generation PET scanners may be unnecessarily high. Our aim was to derive the minimum activity for a reliable relative PET MPI assessment.

Materials And Methods: We analyzed 140 scans from 28 consecutive patients who underwent rest-stress MPI-PET (Ingenuity TF).