Tomographic acquisition method having two detectors with sighting center distinct from the center of rotation
AssigneeSopha Medical
InventorsMichel Pierfitte, Pierre DeLorme
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Abstract
To acquire measurement data elements during a tomography type experiment in nuclear medecine, with a gamma camera having two detector heads, each of these heads is oriented on a sighting center P while the set of two heads rotates about a center of rotation Ia of the apparatus, the center of rotation being offset from the sighting center. It is shown that this approach provides speedier operation for the acquisition and also contributes to the preparation of tomography images that are more precise and more easily computed.
Claims14
A method for the acquisition of tomographic images, in the course of an examination in nuclear medicine, carried out with a gamma camera with two detector heads, these two heads being held in a position facing each other by a stand rotating about a rotation axis, wherein:
- each of the two heads is provided with an axis of angulation of its sighting direction, these two angulation axes being parallel to the axis of rotation of the stand, this axis of rotation of the stand being contained in the plane defined by these two axes of angulation;
- the sighting direction of each of the heads is oriented in angulation, thus defining a sighting center having an offset with respect to this axis of rotation.
A method for the acquisition of tomographic images, in the course of an examination in nuclear medicine, carried out with a gamma camera with two detector heads, these two heads being held in a position facing each other by a stand rotating about a rotation axis, wherein:
- each of the two heads is provided with an axis of angulation of its sighting direction, these two angulation axes being parallel to the axis of rotation of the stand, this axis of rotation of the stand being contained in the plane defined by these two axes of angulation;
- the sighting direction of each of the heads is oriented in angulation, thus defining a sighting center having an offset with respect to this axis of rotation;
- wherein the examination is a tomography, wherein the body is explored by making the stand rotate about an axis of rotation, and wherein the sighting center is outside the axis of rotation, in a plane transverse to this axis.
Dependencies are inferred from the claim text.