Single photon emission CT apparatus
AssigneeKabushiki Kaisha Toshiba
InventorHirofumi Iwao
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Abstract
In a diagnostic apparatus of this invention, an accumulated or deposited state of an administered radioactive medicine in an organ or the like of a living body is detected from the outside of the living body by detecting portions, each constituted by at least one scintillation detector and at least one collimator, so as to obtain an image of the state. The apparatus includes three detecting portions. Driving mechanisms are provided for at least two of the detecting portions to linearly move and rotate them.
Claims18
A single photon emission CT apparatus in which a detection operation is performed from outside of a living body by a detecting portion constituted by at least one scintillation detector and at least one collimator to obtain a SPECT image in a head portion of the living body, comprising:
- a gantry;
- a rotatable ring arranged on said gantry so as to rotate said rotatable ring with the gantry and having a patient insertion hole formed in a central portion thereof;
- three detecting portion pairs arranged around the hole in said rotatable ring, each of said detecting portion pairs being constituted by a scintillation detector and a collimator, and each having a detection surface thereof;
- moving mechanisms comprising means for rotating at least two of said three detecting portion pairs so as to form a triangle with the detection surfaces of said scintillation detectors;
- and
- a bed unit having a slide top plate for transferring a patient to be examined to a position near said detecting portion pairs.
A single photon emission CT apparatus for imaging a tomogram of a distribution of a radioisotope material located inside a patient's body, comprising:
- a rotatable gantry having an axis of rotation;
- three detectors, each having a corresponding detection surface, mounted on said gantry for detecting radiation emitted from the radioisotope material which impinges at least one of said detection surfaces;
- and
- means for moving at least two of said detectors from a first orientation to a second orientation, and also from said second orientation to said first orientation, wherein said first orientation is such that the three detection surfaces are oriented obliquely to each other so as to form a triangular region, and the second orientation is such that the detection surfaces of said at least two detectors are oriented so as to be parallel to each other to thereby be disposed in opposed relation, and said detection surfaces of said at least two detectors are oriented so as to be perpendicular to the detection surface of the third detector.
Dependencies are inferred from the claim text.