Inclined pet device and pet combined device

摘要

An inclined PET device is provided in which the cut plane of a detector ring upon which a plurality of PET detectors are disposed is inclined so that it does not intersect perpendicularly with the long axis of a bed that carries a subject to be examined and in which an open space that passes through the bed in a direction perpendicular to the long axis thereof is formed, in order to enable access to the subject to be examined. The PET detectors are disposed and stacked in a direction parallel to the long axis of the bed. Thereby, the number of PET detectors is reduced and device cost is reduced, while the detector ring as well as the device can be miniaturized. At the same time, the open space that passes through the bed in a direction perpendicular to the long axis can be preserved.

主权项

1. 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 vertical axis perpendicular to a long axis of a bed for an examination subject, when viewed in a direction corresponding to a horizontal 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 vertical axis perpendicular to the long axis of the bed, when viewed in the direction corresponding to the horizontal 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 vertical axis perpendicular to the long axis of the bed, when viewed in the direction corresponding to the horizontal 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 vertical axis perpendicular to the long axis of the bed, when viewed in the direction corresponding to the horizontal axis perpendicular to the long axis of the bed; andthe respective PET detectors are disposed and stacked in a direction parallel to the long axis of the bed.