Title:
COMPACT MEDICAL X-RAY IMAGING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2015/002276
Kind Code:
A1
Abstract:
[Problem] To provide a compact medical X-ray imaging apparatus which is portable, with which it is possible to capture clear X-ray images while maintaining low radiation exposure, and with which it is possible to increase the life of X-ray sources. [Solution] An X-ray imaging apparatus which is portable, and with which it is possible to capture clear X-ray images while maintaining low radiation exposure. This compact medical X-ray imaging apparatus comprises: a carbon nanostructure triode cold cathode X-ray tube that radiates X-rays; an X-ray image sensor that captures an image of X-rays that have passed through a patient; a first detector that detects the X-ray radiation dosage and that is positioned between the carbon nanostructure triode cold cathode X-ray tube and the X-ray image sensor, and within the range in which X-rays are irradiated rather than the X-ray effective imaging area irradiated by the X-ray image sensor; a second detector that detects the X-ray dose and is positioned in the center part of one side of the frame of the X-ray image sensor; a third detector that detects the X-ray dose and is positioned on one side of the frame of the X-ray image sensor sandwiching the detection surfaces of the X-ray image sensor and facing the second detector; a power supply which supplies a negative and a positive high-voltage pulse to the cathode and anode of the carbon nanostructure triode cold cathode X-ray tube respectively; and an X-ray imaging control device which acquires detection data from the first, second and third detectors in addition to information concerning the distance from the carbon nanostructure triode cold cathode X-ray tube to the X-ray image sensor, calculates the X-ray radiation dose and amount of decay, determines the optimum X-ray dose for the patient and the voltage of the carbon nanostructure triode cold cathode X-ray tube, and provided with feedback control that controls the pulse number and pulse width of the high-voltage pulse of the carbon nanostructure triode cold cathode X-ray tube, and the voltage of the cathode and the anode.
Inventors:
WANG BO (JP)
WANG XIAODONG (JP)
SAITO NORIO (JP)
MATSUOKA KAZUO (JP)
SUZUKI RYOICHI (JP)
WANG XIAODONG (JP)
SAITO NORIO (JP)
MATSUOKA KAZUO (JP)
SUZUKI RYOICHI (JP)
Application Number:
PCT/JP2014/067825
Publication Date:
January 08, 2015
Filing Date:
July 03, 2014
Export Citation:
Assignee:
TSUKUBA TECHNOLOGY CO LTD (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
International Classes:
A61B6/00; G01T7/00
Foreign References:
| JP2009533151A | 2009-09-17 | |||
| JP2013094454A | 2013-05-20 | |||
| JP2010094327A | 2010-04-30 | |||
| JP2011115369A | 2011-06-16 | |||
| JP2011514627A | 2011-05-06 |
Attorney, Agent or Firm:
NAKAGAWA KUNIO (JP)
Kunio Nakagawa (JP)
Kunio Nakagawa (JP)
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