Nuclear medicine diagnostic apparatus

A nuclear medicine diagnostic apparatus comprising:

• a frame apparatus;
• and
• a console apparatus,
• the frame apparatus including:
• a detector configured to detect annihilation gamma rays emitted from a subject;
• first processing circuitry configured to generate single event data based on a detection result of the detector;
• and
• a data acquisition system (DAS) configured to transfer the single event data generated by the first processing circuitry to the console apparatus, and
• the console apparatus including:
• a first memory configured to store the single event data transferred from the frame apparatus;
• and
• second processing circuitry configured to
• execute pairing processing to identify a combination of two pieces of the single event data corresponding to two annihilation gamma rays emitted in opposite directions, the pairing processing being executed on pieces of the single event data that are stored in the first memory and correspond to a first period of time,
• delete, from the first memory, the single event data that corresponds to a second period of time in the first period of time, and to which the pairing processing has been applied, and
• execute the pairing processing on both
• pieces of the single event data that correspond to a third period of time in the first period of time, that are stored in the first memory, and to which the pairing processing has been applied, and
• pieces of the single event data that correspond to a fourth period of time following the first period of time and following the third period of time, and that is stored in the first memory.