Positron emission tomography apparatus, method, and storage medium

A method to be applied to a positron emission tomography apparatus including a plurality of Positron Emission Tomography (PET) detector entities arranged in a ring formation, the method comprising:

• obtaining, with respect to each of the plurality of PET detector entities, state information indicating a state of the PET detector entity;
• detecting an abnormality when an index value indicating a state of any individual or a whole of the plurality of PET detector entities exceeds a threshold value on a basis of the state information;
• and
• detecting a state in which the abnormality is not detected on the basis of the state information, but an index value indicating states of at least two of the plurality of PET detector entities is different from an index value indicating states of at least two other PET detector entities.

A non-transitory computer-readable storage medium having recorded therein a plurality of computer-executable instructions that are applied to a positron emission tomography apparatus including a plurality of Positron Emission Tomography (PET) detector entities arranged in a ring formation and that cause a computer to execute:

• obtaining, with respect to each of the plurality of PET detector entities, state information indicating a state of the PET detector entity;
• detecting an abnormality when an index value indicating a state of any individual or a whole of the plurality of PET detector entities exceeds a threshold value on a basis of the state information;
• and
• detecting a state in which the abnormality is not detected on the basis of the state information, but an index value indicating states of at least two of the plurality of PET detector entities is different from an index value indicating states of at least two other PET detector entities.