Radiation imaging apparatus and system
First Claim
1. A radiation imaging apparatus comprising:
- a radiation detector, having a detector panel, for receiving radiation applied by a radiation source to an object, and storing charge according to a radiation dose of said radiation, to create an image;
a first radiation sensor for detecting said radiation dose;
an evaluation unit for recognizing at least one of a start and an end of application of said radiation according to a dose signal from said first radiation sensor;
a control unit for controlling said detector panel according to an evaluation result of said evaluation unit;
a flexible support arm having a first end to which said first radiation sensor is attached; and
a fastening device attached to a second end of said flexible support arm, said second end being different from said first end of said flexible support arm,wherein said first radiation sensor is secured removably in a radiation path between said radiation source and said object by said fastening device, and said first radiation sensor is kept in a changeable position in a range of the length of said flexible support arm.
1 Assignment
0 Petitions
Accused Products
Abstract
An X-ray imaging apparatus has an electronic cassette, in which an FPD device receives X-rays applied by an X-ray source to a body, and stores charge according to a radiation dose of the X-rays, to create an image. A control unit controls the FPD device. A radiation sensor detects the radiation dose to be used for controlling the FPD device. A magnet as fastening device secures the radiation sensor removably in a radiation path between the X-ray source and the body. Also, an evaluation unit recognizes a start and end of application of the X-rays according to a dose signal from the radiation sensor, for the control unit to control the FPD device. A flexible support arm is disposed between the radiation sensor and the magnet, for keeping the radiation sensor in a changeable position relative to the magnet.
-
Citations
20 Claims
-
1. A radiation imaging apparatus comprising:
-
a radiation detector, having a detector panel, for receiving radiation applied by a radiation source to an object, and storing charge according to a radiation dose of said radiation, to create an image; a first radiation sensor for detecting said radiation dose; an evaluation unit for recognizing at least one of a start and an end of application of said radiation according to a dose signal from said first radiation sensor; a control unit for controlling said detector panel according to an evaluation result of said evaluation unit; a flexible support arm having a first end to which said first radiation sensor is attached; and a fastening device attached to a second end of said flexible support arm, said second end being different from said first end of said flexible support arm, wherein said first radiation sensor is secured removably in a radiation path between said radiation source and said object by said fastening device, and said first radiation sensor is kept in a changeable position in a range of the length of said flexible support arm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A radiation imaging apparatus comprising:
-
a radiation detector, having a detector panel, for receiving radiation applied by a radiation source to an object, and storing charge according to a radiation dose of said radiation, to create an image; a first radiation sensor for detecting said radiation dose; an evaluation unit for recognizing a start and/or an end of application of said radiation according to a dose signal from said first radiation sensor; a control unit for controlling said detector panel according to an evaluation result of said evaluation unit; a fastening device for securing said first radiation sensor removably in a radiation path between said radiation source and said object; and a second radiation sensor, disposed on said detector panel, for detecting said radiation dose discretely from said first radiation sensor, wherein said control unit compares said radiation dose with a reference dose conditioned previously, and selects one of outputs of said first and second radiation sensors for use according to a result of comparison of said radiation dose.
-
-
18. A radiation imaging system comprising:
-
a radiation source for applying radiation to an object; a radiation detector, having a detector panel, for receiving said radiation applied to said object, and storing charge according to a radiation dose of said radiation, to create an image; a first radiation sensor for detecting said radiation dose; an evaluation unit for recognizing at least one of a start and an end of application of said radiation according to a dose signal from said first radiation sensor; a control unit for controlling said detector panel according to an evaluation result of said evaluation unit; a flexible support arm having a first end to which said first radiation sensor is attached; and a fastening device attached to a second end of said flexible support arm, said second end being different from said first end of said flexible support arm, wherein said first radiation sensor is secured removably in a radiation path between said radiation source and said object by said fastening device, and said first radiation sensor is kept in a changeable position in a range of the length of said flexible support arm. - View Dependent Claims (19, 20)
-
Specification