X-ray computed tomography apparatus
View Patent ↗An X-ray computed tomography apparatus includes a substantially annular frame, a mechanism configured to support rotatably the frame, an X-ray tube mounted on the frame, an X-ray detector mounted on the frame, a position detecting unit configured to detect that the frame passes a reference position, a counting unit configured to count the cumulative number of revolutions of the frame on the basis of an output from the position detecting unit, and a storage unit configured to store data of the cumulative number of revolutions of the frame.
1. An X-ray computed tomography apparatus comprising:
a rotating frame;
a mechanism configured to support rotatably the frame;
an X-ray tube mounted on the frame;
an X-ray detector mounted on the frame;
a position detecting unit configured to detect that the frame passes a reference position;
a counting unit configured to count the cumulative number of revolutions of the frame on the basis of an output from the position detecting unit; and
a storage unit configured to store data of the cumulative number of revolutions of the frame.
2. An apparatus according to claim 1 , further comprising a display unit configured to display a message for prompting maintenance when the cumulative number of revolutions of the frame reaches a predetermined upper limit value.
3. An apparatus according to claim 1 , further comprising a display unit configured to display the cumulative number of revolutions of the frame.
4. An apparatus according to claim 1 , further comprising a transmitting unit configured to transmit data of the cumulative number of revolutions of the frame to an external maintenance system when the cumulative number of revolutions of the frame reaches a predetermined upper limit value.
5. An apparatus according to claim 1 , further comprising a transmitting unit which transmits data of the cumulative number of revolutions of the frame to an external maintenance system.
6. An apparatus according to claim 1 , further comprising a standalone counter which is connected to the position detecting unit through a connector.
7. An X-ray computed tomography apparatus comprising:
a rotating frame;
a mechanism configured to support rotatably the frame;
an X-ray tube mounted on the frame;
an X-ray detector mounted on the frame;
a pulse generating unit configured to generate a pulse upon rotation of the frame;
a counting unit configured to count the cumulative number of pulses; and
a storage unit configured to store data of the cumulative number of pulses counted.
8. An apparatus according to claim 7 , wherein the pulse generating unit comprises an encoder which generates the pulse upon axial displacement of a motor which generates power for rotation of the frame.
9. An apparatus according to claim 7 , further comprising a display unit configured to display a message for prompting maintenance when the cumulative number of pulses reaches a predetermined upper limit value.
10. An apparatus according to claim 7 , further comprising a display unit configured to display the cumulative number of pulses.
11. An apparatus according to claim 7 , further comprising a transmitting unit configured to transmit data of the cumulative number of revolutions of the frame to an external maintenance system when the cumulative number of pulses reaches a predetermined upper limit value.
12. An apparatus according to claim 7 , further comprising a transmitting unit configured to transmit data of the cumulative number of pulses to an external maintenance system.
13. An X-ray computed tomography apparatus comprising:
a rotating frame;
a mechanism configured to support rotatably the frame;
an X-ray tube mounted on the frame;
an X-ray detector mounted on the frame;
a pulse generating unit configured to generate a pulse upon tilting of the frame;
a counting unit configured to count the cumulative number of pulses; and
a storage unit configured to store data of the cumulative number of pulses counted.
14. An X-ray computed tomography apparatus comprising:
a top configured to support a subject to be examined;
a mechanism configured to support the top so as to allow the top to be freely movable in a longitudinal direction;
an X-ray tube;
an X-ray detector configured to oppose the X-ray tube through the subject;
a pulse generating unit configured to generate a pulse upon movement of the top;
a counting unit configured to count the cumulative number of pulses; and
a storage unit configured to store data of the cumulative number of pulses counted.
15. An X-ray computed tomography apparatus comprising:
a top configured to support a subject to be examined;
a mechanism configured to support the top so as to allow the top to be freely movable in a vertical direction;
an X-ray tube;
an X-ray detector opposed the X-ray tube through the subject;
a pulse generating unit configured to generate a pulse upon movement of the top;
a counting unit configured to count the cumulative number of pulses; and
a storage unit configured to store data of the cumulative number of pulses counted.