Inclined pet device and pet combined device

An inclined PET device comprising:

• a detector ring;
• and
• a plurality of PET detectors disposed in the detector ring, a cut plane of the detector ring being obliquely inclined so as not to intersect perpendicularly with a long axis of a bed that carries a subject to be examined,
• wherein:
• none of the PET detectors on opposite portions of the detector ring on either side of the bed overlap in at least one direction perpendicular to the long axis of the bed;
• an open space with width for access is formed between the opposite portions of the detector ring in the at least one direction perpendicular to the long axis of the bed, the open space enabling access to the subject to be examined, the open space passing through the bed in the at least one direction perpendicular to the long axis thereof, and the open space being disposed in a direction that is the same as a direction of the access to the subject to be examined;
• and
• the respective PET detectors are disposed and stacked in a direction parallel to the long axis of the bed.

An inclined PET device comprising:

• a detector ring;
• and
• a plurality of PET detectors disposed in the detector ring, edges of the detector ring being inclined at an angle oblique to a first axis perpendicular to a long axis of a bed for an examination subject, when viewed in a direction corresponding to a second axis perpendicular to the long axis of the bed;
• wherein:
• none of the PET detectors on opposite portions of the detector ring on either side of the bed overlap in a direction corresponding to the first axis perpendicular to the long axis of the bed, when viewed in the direction corresponding to the second axis perpendicular to the long axis of the bed;
• an open space with width for access is formed between the opposite portions of the detector ring on either side of the bed, the open space being formed in the direction corresponding to the first axis perpendicular to the long axis of the bed, when viewed in the direction corresponding to the second axis perpendicular to the long axis of the bed, the open space enabling access to the examination subject, and the open space passing through the bed in the direction corresponding to the first axis perpendicular to the long axis of the bed, when viewed in the direction corresponding to the second axis perpendicular to the long axis of the bed;
• and
• the respective PET detectors are disposed and stacked in a direction parallel to the long axis of the bed.