Computer tomography scanner having an adjustable rotational speed
AssigneeKoninklijke Philips Electronics N.V.
InventorsRobert Manzke, Michael Grass, Udo Van Stevendaal
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Abstract
The invention relates to a computer tomography scanner comprising a gantry, on the rotor of which one or more displaceable masses are arranged. During rotation of the rotor about a rotation axis, the position of each mass can be changed perpendicular to the rotation axis by means of an adjustment unit. By retaining the rotary momentum of the rotor, the rotational speed is increased when the masses are moved toward the rotation axis, and vice versa. As a result, it is possible to maintain a specific ratio between the heart rate of the examined patient and the rotational speed even if the heart rate of the patient changes during the examination.
Claims11
A computer tomography scanner comprising a rotor which can rotate about a rotation axis, at least one mass arranged on the rotor, and an adjustment unit for changing the position of the mass perpendicular to the rotation axis during rotation of the rotor.
A method of changing the rotational speed of the rotor of a computer tomography scanner during rotation of the rotor about a rotation axis, comprising the following step:
- a) changing the position of at least one mass arranged on the rotor perpendicular to the rotation axis.
Dependencies are inferred from the claim text.