Radiographic apparatus

• US 6,502,984 B2
• Filed: 01/16/1998
• Issued: 01/07/2003
• Est. Priority Date: 01/17/1997
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Hirai, Akira, Ogura, Takashi, Kawasaki, Keiichi
• Primary Examiner(s): Church, Craig E.
• Application Number:
  US09/008,510
• Publication Number:
  US 20010012330A1
• Time in Patent Office: 1,817 Days
• Field of Search: 378/206, 378/62, 378/63
• US Class Current: 378/206
• CPC Class Codes: A61B 6/06 Diaphragms
• CPC Class Codes: A61B 6/08 Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
• CPC Class Codes: A61B 6/4216 using storage phosphor screens
• CPC Class Codes: A61B 6/4233 using matrix detectors
• CPC Class Codes: A61B 6/4291 the detector being combined with a grid or grating
• CPC Class Codes: A61B 6/502 for diagnosis of breast, i.e. mammography
• CPC Class Codes: A61B 6/542 involving control of exposure
• CPC Class Codes: A61B 6/544 dependent on patient size
• CPC Class Codes: A61B 6/548 Remote control of the apparatus or devices
• CPC Class Codes: A61B 6/588 Setting distance between source unit and detector unit
• CPC Class Codes: H05G 1/38 Exposure time time switches in general H01H43/00 and subgroups

Abstract

This invention relates to a radiographic apparatus which comprises a radiographic image photographing unit for photographing a radiographic image of an object irradiated with radiation by a radiation generating device, a distance measuring system for measuring the distances or distance from the radiation generating device to the radiographic image photographing unit and/or the object, and distance information indicating means for indicating distance information obtained by the distance measuring system.

Claims

1. A radiographic apparatus comprising:

a radiographing unit for radiographing an object irradiated with radiation and obtaining radiographic image data;

an object information detecting unit for detecting a light image of the object and obtaining light image data;

an image processing unit for performing an image processing of said radiographic image data obtained by said radiographing unit and outputting processed radiographic image data;

a determination unit for determining an image processing condition used by said image processing unit on the basis of said light image data obtained by said object information detecting unit.

2. An apparatus according to claim 1, further comprising a unit for indicating object information obtained by said object information detecting unit.

3. An apparatus according to claim 1, further comprising a unit for determining a radiographing condition on the basis of said light image data obtained by said object information detecting unit.

4. An apparatus according to claim 1, wherein said object information detecting unit detects a visible light image of the object as the light image.

5. An apparatus according to claim 1, further comprising a unit for determining location of the object on the basis of said light image data obtained by said object information detecting unit.

6. A radiographic apparatus comprising:

a radiographing unit for radiographing an object irradiated with radiation and obtaining radiographic image data;

an object information detecting unit for detecting a light image of the object and obtaining light image data; and

a body part specifying unit for specifying a part of the object to be radiographed by said radiographing unit on the basis of said light image data obtained by said object information detecting unit.

7. An apparatus according to claim 6, further comprising a unit for determining a radiographing condition for radiographing the object on the basis of body part information obtained by said body part specifying unit.

8. An apparatus according to claim 6, further comprising a unit for determining a condition for an image processing of radiographic image data obtained by said radiographing unit on the basis of body part information obtained by said body part specifying unit.

10. An apparatus according to claim 7, further comprising a unit for determining a radiographing condition for radiographing the object on the basis of posture information obtained by said posture specifying unit.

9. A radiographic apparatus comprising:

a radiographing unit for radiographing an object irradiated with radiation and obtaining radiographic image data;

an object information detecting unit for detecting a light image of the object and obtaining light image data; and

a posture specifying unit for specifying posture of the object on the basis of said light image data obtained by said object information detecting unit.

11. An apparatus according to claim 9, further comprising a unit for determining a condition for an image processing of radiographic image data obtained by said radiographing unit on the basis of posture information obtained by said posture specifying unit.

12. A radiographic apparatus comprising:

a radiographing unit for radiographing an object irradiated with radiation and obtaining radiographic image data;

an object information detecting unit for detecting a light image of the object and obtaining light image data;

a determination unit for determining an irradiation field region in said radiographic image data obtained by said radiographing unit on the basis of said light image data obtained by said object information detecting unit; and

an image processing unit for performing an image processing of said irradiation field region, determined by said determination unit in said radiographic image data and outputting processed radiographic image data.

13. A radiographic apparatus according to claim 12, further comprising a position correspondence unit for making positional correspondence between said radiographic image data and said light image data.