Radiographic device and control method therefor
AssigneeCanon Kabushiki Kaisha
InventorOsamu Tsujii
Life of this patent
Estimating the term…
Abstract
A radiographic device includes a radiation source which generates radiation and a detector which detects radiation from the radiation source on a two-dimensional plane and outputs an image signal, and performs radiography of a subject to be examined while rotating the radiation source and the detector relative to the subject. In this radiography, the first resolution or the second resolution lower than the first resolution is selected in accordance with a rotational position in the relative rotation. An image signal from the detector is stored as data corresponding to the resolution selected by a selection unit.
Claims16
A radiographic device comprising:
- a radiation source which generates radiation;
- a detector which detects radiation from said radiation source on a two-dimensional plane and outputs image data;
- an imaging control unit configured to perform radiography of a subject to be examined while rotating said radiation source and said detector relative to the subject;
- a setting unit which sets a rotational position;
- a selection unit configured to select a first resolution in case of the set rotational position and select a second resolution lower than the first resolution in case of rotational positions except for the set rotational position, in the radiography in the relative rotation;
- a speed control unit configured to switch a speed of the relative rotation to a first speed in case of the set rotational position and switch a speed of the relative rotation to a second speed higher than the first speed in case of rotational positions except for the set rotational positions;
- and
- a storage unit configured to store image data corresponding to a resolution selected by said selection unit on the basis of the image data from said detector.
A control method for a radiographic device including a radiation source which generates radiation, and a detector which detects radiation from the radiation source on a two-dimensional plane and outputs image data, comprising:
- a setting step of setting a rotational position;
- an imaging control step of performing radiography of a subject to be examined while rotating the radiation source and the detector relative to the subject;
- a selection step of selecting a first resolution in case of the set rotational position and selecting a second resolution lower than the first resolution in case of rotational positions except for the set rotational position, in the radiography in the relative rotation;
- a speed control step of switching a speed of relative rotation to a first speed in case of the set rotational position and switching a speed of the relative rotation to a second speed higher than the first speed in case of a rotational position except for the set rotational position;
- and
- a storage step of storing image data corresponding to a resolution selected in the selection step on the basis of the image data from the detector.
Dependencies are inferred from the claim text.