WO2007020318A3 - X-ray imaging apparatus and x-ray imaging method for eccentric ct scanning - Google Patents

X-ray imaging apparatus and x-ray imaging method for eccentric ct scanning Download PDF

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Publication number
WO2007020318A3
WO2007020318A3 PCT/FI2005/050293 FI2005050293W WO2007020318A3 WO 2007020318 A3 WO2007020318 A3 WO 2007020318A3 FI 2005050293 W FI2005050293 W FI 2005050293W WO 2007020318 A3 WO2007020318 A3 WO 2007020318A3
Authority
WO
WIPO (PCT)
Prior art keywords
ray imaging
rotation
ray source
support means
axis
Prior art date
Application number
PCT/FI2005/050293
Other languages
French (fr)
Other versions
WO2007020318A2 (en
Inventor
Juuso Siren
Original Assignee
Palodex Group Oy
Juuso Siren
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Palodex Group Oy, Juuso Siren filed Critical Palodex Group Oy
Priority to PCT/FI2005/050293 priority Critical patent/WO2007020318A2/en
Publication of WO2007020318A2 publication Critical patent/WO2007020318A2/en
Publication of WO2007020318A3 publication Critical patent/WO2007020318A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pulmonology (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

The invention relates to a method and device for performing CT type X-ray imaging. The device comprises a frame part (25), an X-ray source (22; 41) for producing X- rays (42), radiation receiving means (21; 44) for detecting radiation transmitted through an object, support means (26) for supporting the X-ray source and the receiving means in positions on opposite sides of an object. The support means are connected to the frame part so as to rotate around the axis of rotation. The device further comprises actuator means for rotating the support means around the axis of rotation and collimation means arranged in conjunction with the X-ray source for causing a conical or pyramid-shaped beam of rays to be directed through the object, whereupon the field of view becomes essentially a circular cylinder. In the method, the rotation centre (45) between the X-ray source (41) and the radiation receiving means (44) is arranged to move along a predetermined route as the support means rotate around the axis of rotation (40).
PCT/FI2005/050293 2005-08-17 2005-08-17 X-ray imaging apparatus and x-ray imaging method for eccentric ct scanning WO2007020318A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2005/050293 WO2007020318A2 (en) 2005-08-17 2005-08-17 X-ray imaging apparatus and x-ray imaging method for eccentric ct scanning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2005/050293 WO2007020318A2 (en) 2005-08-17 2005-08-17 X-ray imaging apparatus and x-ray imaging method for eccentric ct scanning

Publications (2)

Publication Number Publication Date
WO2007020318A2 WO2007020318A2 (en) 2007-02-22
WO2007020318A3 true WO2007020318A3 (en) 2007-04-12

Family

ID=37757939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2005/050293 WO2007020318A2 (en) 2005-08-17 2005-08-17 X-ray imaging apparatus and x-ray imaging method for eccentric ct scanning

Country Status (1)

Country Link
WO (1) WO2007020318A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8300762B2 (en) * 2007-11-16 2012-10-30 J. Morita Manufacturing Corporation X-ray CT imaging apparatus
CN102325499B (en) 2009-01-21 2014-07-16 皇家飞利浦电子股份有限公司 Method and apparatus for large field of view imaging and detection and compensation of motion artifacts
BR212012002342U2 (en) 2009-08-06 2015-11-03 Koninkl Philips Electronics Nv method of imaging an object using an imaging apparatus having a detector, medical imaging apparatus adapted to image an object, and combined x-ray and spect imaging system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005967A1 (en) * 1997-08-01 1999-02-11 Analogic Corporation Asymmetric detector halfscan ct reconstruction
WO2000062674A1 (en) * 1999-04-15 2000-10-26 General Electric Company Half field of view reduced-size ct detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005967A1 (en) * 1997-08-01 1999-02-11 Analogic Corporation Asymmetric detector halfscan ct reconstruction
WO2000062674A1 (en) * 1999-04-15 2000-10-26 General Electric Company Half field of view reduced-size ct detector

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
GREGOR J. ET AL: "Conebeam X-ray computed tomography with an offset detector array", 2003, INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, 2003, ICIP 2003, vol. 2, 14 September 2003 (2003-09-14) - 17 September 2003 (2003-09-17), pages II-803 - II-806, XP010670585 *
PAN X. ET AL: "Spatial-resolution enhancement in computed tomography", IEEE TRANSACTIONS ON MEDICAL IMAGING, vol. 24, no. 2, February 2005 (2005-02-01), pages 246 - 253, XP002997581 *
ZENG G.L. ET AL: "Asymmetric cone-beam transmission tomography", IEEE TRANSACTIONS ON NUCLEAR SCIENCE, vol. 48, no. 1, February 2001 (2001-02-01), pages 117 - 124, XP001034564 *

Also Published As

Publication number Publication date
WO2007020318A2 (en) 2007-02-22

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