WO2007007963A1 - Volume x-ray ct scanner - Google Patents

Volume x-ray ct scanner Download PDF

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Publication number
WO2007007963A1
WO2007007963A1 PCT/KR2006/002540 KR2006002540W WO2007007963A1 WO 2007007963 A1 WO2007007963 A1 WO 2007007963A1 KR 2006002540 W KR2006002540 W KR 2006002540W WO 2007007963 A1 WO2007007963 A1 WO 2007007963A1
Authority
WO
WIPO (PCT)
Prior art keywords
ray
scanner
detector assembly
volume
rotational
Prior art date
Application number
PCT/KR2006/002540
Other languages
French (fr)
Inventor
Jung-Byung Park
Kwan-Woo Lee
Original Assignee
Drgem Corporation
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 Drgem Corporation filed Critical Drgem Corporation
Publication of WO2007007963A1 publication Critical patent/WO2007007963A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computerised tomographs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G01N2223/419—Imaging computed tomograph

Definitions

  • the present invention relates to a CT (Computerized Tomography) scanner, and more particularly to a volume X-ray CT scanner using a translational and rotational scanning manner, which disposes an arrangement direction of a X-ray detector assembly in parallel with an axial direction of rotation and allows an object to make translational movement and rotation in order, wherein the CT scanner is composed of a X-ray detector assembly used for scanning, a X-ray generator, a translational moving unit and a rotational unit, thereby capable of reducing the number of detectors and thus allowing manufacture of the CT scanner at a lower cost, the CT scanner also ensuring an improved spatial resolution in Z axis.
  • CT Computerized Tomography
  • X-ray CT scanners are classified into a fan beam type scanner and a cone beam type scanner.
  • Such a X-ray CT scanner is configured to rotate only an object based on a rotational center 60, or to fix a subject and to rotate X-ray generator 40 and detector assemblies 11, 12 together based on the rotational center 60, as shown in FlG. 1.
  • the detector assembly 11 has several hundred detector elements arranged in a horizontal direction, while, as shown in B of FlG. 1, the detector assembly 12 has a plurality of detector assemblies 11 with horizontal arrangement, which are laminated in vertical direction.
  • the detector assemblies 11, 12 have a linear or planar shape, but the detectors may also have an arrangement in a curved shape.
  • the 3 rd generation CT scanner generally uses a helical method, which scans an object with rotating the X-ray detector assembly and the X-ray generator on a X-Y plane while the object is continuously moving in a Z-axis direction.
  • a 2 nd generation CT scanner has a shorter length of a detector assembly in an arrangement direction in comparison to the 3 r generation CT scanner, so the 2" generation CT scanner scans an object with making translational movement and rotation together.
  • an arrangement direction of a 1 -dimensional detector assembly is orthogonal to a rotational axis, differently from the present invention.
  • FlG. 2 is a schematic view showing that an object escapes from a FOV (Field of View) in a conventional CT scanner using fan beam X-ray, in which the 3 r generation X-ray CT scanner uses fan beam and employs a 1 -dimensional detector assembly.
  • FlG. 2 shows a case that an object is located within the FOV and a case that an object escapes from the FOV, respectively.
  • 1 -dimensional detector assembly 10 has been proposed so that a subject with great width may be sufficiently put within its FOV.
  • the present invention is designed in consideration of the above problems, and therefore it is a purpose of the invention to provide a volume X-ray CT (Computerized Tomography) scanner using a translational and rotational scanning manner, in which an arrangement direction of a X-ray detector assembly and a rotational axis are all disposed in parallel with a Z-axis direction and an object is scanned using a translational moving unit and a rotational unit, thereby allowing easy CT scanning of an object with large size, capable of reducing the number of detectors and thus allowing manufacture of the CT scanner at a lower cost.
  • a volume X-ray CT Computerized Tomography
  • the present invention provides a volume X-ray CT (Computerized Tomography) scanner, wherein an arrangement direction 16 of a 1 -dimensional X-ray detector assembly 15 and an axial direction of rotation 61 are all disposed in parallel with a Z-axis direction, and an object is scanned using a translational moving unit 70 and a rotational unit 80.
  • a focal spot 42 of X-ray, a surface of a rotating plate 81 of the rotational unit, and one end of the X-ray detector assembly 15 are arranged at the same height
  • an axis of an anode 41 in a X-ray tube and the arrangement direction 16 of the X-ray detector assembly are disposed perpendicularly.
  • the X-ray detector assembly 15 has a linear or a curved shape.
  • the X-ray detector assembly employs a 2-dimensional X-ray detector assembly in which a plurality of 1 -dimensional X-ray detector assembles are laminated.
  • FIG. 1 shows conventional X-ray CT scanners, wherein A of FIG. 1 is a schematic view showing essential parts of a fan beam X-ray CT scanner and B of FIG. 1 is a schematic view showing essential parts of a cone beam volume X-ray CT scanner; [24] FIG. 2 is a schematic view showing that an object escapes from FOV (Field of
  • FIG. 3 is a schematic view showing a volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention
  • FIG. 4 is a schematic view showing that an object is mounted on a rotational unit of the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention
  • FIG. 5 is a schematic side view showing that an object is mounted on a rotational unit of the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention
  • FIG. 6 is a schematic view illustrating a method for scanning an object through the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention.
  • FlG. 3 is a schematic view showing a volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention
  • FlG. 4 is a schematic view showing that an object 50 is mounted on a rotational unit 80 of the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention
  • FlG. 5 is a schematic side view showing that an object 50 is mounted on a rotational unit 80 of the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention.
  • the volume X-ray CT scanner using a translational and rotational scanning manner is configured so that an arrangement direction 16 of a detector assembly is disposed in parallel with an axial direction of rotation 61 and an object is translated and rotated in order.
  • the volume X-ray CT scanner includes a X- ray detector assembly 15 used for scanning, a X-ray generator 40, a translational moving unit 70, and a rotational unit 80.
  • the arrangement direction 16 of the X-ray detector assembly and the rotation axial direction 61 are all disposed in parallel with a Z-axis direction, and the translational moving unit 70 and the rotational unit 80 are used in scanning the object.
  • the CT scanner scans the object by inputting a fan beam X-ray to the detector assembly 15 using the translational moving unit 70.
  • the object After scanning the object one time, the object should be rotated at a certain small angle and then scanned again.
  • the rotational unit 80 is preferably mounted above the translational moving unit 70.
  • the rotational unit 80 is made of firm material so as to load a heavy object thereon, so a X-ray transmission ratio is low.
  • a focal spot 42 of a X-ray tube is positioned at the same height as a rotating plate 81 of the rotational unit 80, and one end of the X-ray detector assembly 15 is also positioned at the same height. Therefore, the X-ray generator 40, the detector assembly 15 and the rotational unit 80 are arranged so that a X-ray may penetrate the object 50 without penetrating through the rotating plate 81.
  • the X-ray detector assembly preferably has a shape selected from a linear shape and a curved shape in which the detector elements are arranged along an arc whose center of circle is a focal spot of the X-ray tube.
  • an axial direction of an anode 41 of the X-ray tube and an arrangement direction of the detector assembly are preferably arranged to be perpendicular to each other.
  • FlG. 6 is a schematic view illustrating a method for scanning an object through the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention.
  • the object stops at the B position of FlG. 6, and is then rotated at a certain small angle to a C position of FlG. 6. In this state, the object makes a translational movement in a -X-axis direction to a D position of FlG. 6, and another 2-dimensional X-ray image is obtained in this scanning process.
  • the object stops at a D position of FlG. 6, and is then rotated at a certain small angle to an E position of FIG. 6. Then, the object makes a translational movement in a +X-axis direction to a F position of FlG. 6, and then further another 2-dimensional X-ray image is obtained.
  • the volume X-ray CT scanner according to the present invention is configured so that an arrangement direction of a X-ray detector assembly and a rotational axis are all disposed in parallel with a Z-axis direction, a translational moving unit and a rotational unit are used for scanning an object, thereby allowing easy CT scanning of an object with large size, capable of reducing the number of detectors and thus allowing manufacture of the CT scanner at a lower cost.

Abstract

Disclosed is a volume X-ray CT (Computerized Tomography) scanner in which an arrangement direction of a X-ray detector assembly and a rotational axis are all disposed in parallel with a Z-axis direction, and a translational moving unit and a rotational unit are used for scanning an object. Thus, the CT scanner is capable of allowing easy CT scanning of an object with large size, improving a spatial resolution in a Z axis, reducing the number of detectors and thus allowing manufacture of the CT scanner at a lower cost. This CT scanner is configured so that an arrangement direction of the X-ray detector assembly and a rotational axis are all disposed in parallel with the Z axis, and the translational moving unit and the rotational unit are used in scanning an object.

Description

Description
VOLUME X-RAY CT SCANNER
Technical Field
[1] The present invention relates to a CT (Computerized Tomography) scanner, and more particularly to a volume X-ray CT scanner using a translational and rotational scanning manner, which disposes an arrangement direction of a X-ray detector assembly in parallel with an axial direction of rotation and allows an object to make translational movement and rotation in order, wherein the CT scanner is composed of a X-ray detector assembly used for scanning, a X-ray generator, a translational moving unit and a rotational unit, thereby capable of reducing the number of detectors and thus allowing manufacture of the CT scanner at a lower cost, the CT scanner also ensuring an improved spatial resolution in Z axis. Background Art
[2] Generally, X-ray CT scanners are classified into a fan beam type scanner and a cone beam type scanner.
[3] Such a X-ray CT scanner is configured to rotate only an object based on a rotational center 60, or to fix a subject and to rotate X-ray generator 40 and detector assemblies 11, 12 together based on the rotational center 60, as shown in FlG. 1.
[4] Here, as shown in A of FlG. 1, the detector assembly 11 has several hundred detector elements arranged in a horizontal direction, while, as shown in B of FlG. 1, the detector assembly 12 has a plurality of detector assemblies 11 with horizontal arrangement, which are laminated in vertical direction.
[5] The detector assemblies 11, 12 have a linear or planar shape, but the detectors may also have an arrangement in a curved shape.
[6] As described above, a CT scanner having such an arrangement as shown in A and B of FlG. 1 is called the 3r generation CT scanner.
[7] Here, the 3rd generation CT scanner generally uses a helical method, which scans an object with rotating the X-ray detector assembly and the X-ray generator on a X-Y plane while the object is continuously moving in a Z-axis direction.
[8] A 2nd generation CT scanner has a shorter length of a detector assembly in an arrangement direction in comparison to the 3r generation CT scanner, so the 2" generation CT scanner scans an object with making translational movement and rotation together.
[9] In this scanning method, an arrangement direction of a 1 -dimensional detector assembly is orthogonal to a rotational axis, differently from the present invention.
[10] FlG. 2 is a schematic view showing that an object escapes from a FOV (Field of View) in a conventional CT scanner using fan beam X-ray, in which the 3r generation X-ray CT scanner uses fan beam and employs a 1 -dimensional detector assembly. FlG. 2 shows a case that an object is located within the FOV and a case that an object escapes from the FOV, respectively.
[11] Here, as shown in B of FlG. 2, assuming that an object has a cylindrical shape, the object escapes from the FOV if the cylinder has a great diameter, and as a result quality of the CT image is greatly deteriorated.
[12] When this CT scanner is used for medical application, a CT scanner commercialized in the market hardly causes the above problem since the human bodies do not show serious differences. However, in case the X-ray CT scanner is used in the industrial fields, quality of a CT image may be greatly deteriorated since objects have various sizes.
[13] In particular, the above problem was observed in case of an object with small thickness and relatively great width such as a tire and passenger car.
[14] In order to solve the above problems, a CT scanner having an elongated length of a
1 -dimensional detector assembly 10 has been proposed so that a subject with great width may be sufficiently put within its FOV.
[15] However, this method increases the number of detector elements and thus increases a manufacture cost. In addition, since a translational movement is made in a Z-axis direction to get many slice images while rotation is made on a X-Y plane, a spatial resolution in the Z-axis direction is deteriorated.
[16] Meanwhile, as another method for solving the above problems, there has been a 2n generation X-ray CT scanner in which a 1 -dimensional detector assembly is arranged perpendicular to a rotational axis, and a subject is scanned with being translated and rotated. However, this method is also disadvantageous due to its bad Z-axis resolution. Disclosure of Invention Technical Problem
[17] The present invention is designed in consideration of the above problems, and therefore it is a purpose of the invention to provide a volume X-ray CT (Computerized Tomography) scanner using a translational and rotational scanning manner, in which an arrangement direction of a X-ray detector assembly and a rotational axis are all disposed in parallel with a Z-axis direction and an object is scanned using a translational moving unit and a rotational unit, thereby allowing easy CT scanning of an object with large size, capable of reducing the number of detectors and thus allowing manufacture of the CT scanner at a lower cost. Technical Solution
[18] In order to accomplish the above purpose, the present invention provides a volume X-ray CT (Computerized Tomography) scanner, wherein an arrangement direction 16 of a 1 -dimensional X-ray detector assembly 15 and an axial direction of rotation 61 are all disposed in parallel with a Z-axis direction, and an object is scanned using a translational moving unit 70 and a rotational unit 80. [19] Preferably, a focal spot 42 of X-ray, a surface of a rotating plate 81 of the rotational unit, and one end of the X-ray detector assembly 15 are arranged at the same height
(see FIG. 5). [20] In addition, an axis of an anode 41 in a X-ray tube and the arrangement direction 16 of the X-ray detector assembly are disposed perpendicularly. [21] Here, the X-ray detector assembly 15 has a linear or a curved shape.
[22] As an alternative, the X-ray detector assembly employs a 2-dimensional X-ray detector assembly in which a plurality of 1 -dimensional X-ray detector assembles are laminated.
Brief Description of the Drawings [23] FIG. 1 shows conventional X-ray CT scanners, wherein A of FIG. 1 is a schematic view showing essential parts of a fan beam X-ray CT scanner and B of FIG. 1 is a schematic view showing essential parts of a cone beam volume X-ray CT scanner; [24] FIG. 2 is a schematic view showing that an object escapes from FOV (Field of
View) in the conventional CT scanner using fan beam X-ray, wherein the object is located within the FOV in case of A of FIG. 2 and the object escapes from the FOV in case of B of FIG. 2; [25] FIG. 3 is a schematic view showing a volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention; [26] FIG. 4 is a schematic view showing that an object is mounted on a rotational unit of the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention; [27] FIG. 5 is a schematic side view showing that an object is mounted on a rotational unit of the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention; and [28] FIG. 6 is a schematic view illustrating a method for scanning an object through the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention. [29]
[30] * Description for Reference Numerals for Essential Parts in Drawings *
[31] 15: X-ray detector assembly
[32] 16: arrangement direction of detector assembly
[33] 30: fan beam X-ray 30: collimator [34] 40: X-ray tube 41 : anode target in X-ray tube
[35] 42: focal spot 50: object
[36] 60: rotational center 61 : axial direction of rotation
[37] 70: translational moving unit 80: rotational unit
[38] 81: rotating plate of rotational unit
Best Mode for Carrying Out the Invention
[39] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FlG. 3 is a schematic view showing a volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention, FlG. 4 is a schematic view showing that an object 50 is mounted on a rotational unit 80 of the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention, and FlG. 5 is a schematic side view showing that an object 50 is mounted on a rotational unit 80 of the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention.
[40] As shown in FlGs. 3 to 5, the volume X-ray CT scanner using a translational and rotational scanning manner is configured so that an arrangement direction 16 of a detector assembly is disposed in parallel with an axial direction of rotation 61 and an object is translated and rotated in order. The volume X-ray CT scanner includes a X- ray detector assembly 15 used for scanning, a X-ray generator 40, a translational moving unit 70, and a rotational unit 80. The arrangement direction 16 of the X-ray detector assembly and the rotation axial direction 61 are all disposed in parallel with a Z-axis direction, and the translational moving unit 70 and the rotational unit 80 are used in scanning the object.
[41] Here, the CT scanner scans the object by inputting a fan beam X-ray to the detector assembly 15 using the translational moving unit 70.
[42] After scanning the object one time, the object should be rotated at a certain small angle and then scanned again. Thus, the rotational unit 80 is preferably mounted above the translational moving unit 70.
[43] Meanwhile, the rotational unit 80 is made of firm material so as to load a heavy object thereon, so a X-ray transmission ratio is low. Thus, a focal spot 42 of a X-ray tube is positioned at the same height as a rotating plate 81 of the rotational unit 80, and one end of the X-ray detector assembly 15 is also positioned at the same height. Therefore, the X-ray generator 40, the detector assembly 15 and the rotational unit 80 are arranged so that a X-ray may penetrate the object 50 without penetrating through the rotating plate 81.
[44] The X-ray detector assembly preferably has a shape selected from a linear shape and a curved shape in which the detector elements are arranged along an arc whose center of circle is a focal spot of the X-ray tube.
[45] In addition, in order to solve the problem that quality is not uniform in a X-ray anode direction due to the heel effect, an axial direction of an anode 41 of the X-ray tube and an arrangement direction of the detector assembly are preferably arranged to be perpendicular to each other.
[46] Though the embodiment of the present invention has been illustrated only based on the 1 -dimensional detector assembly in which detector elements are arranged in one line, it is also possible that detector elements are arranged in several lines so as to improve a scanning rate.
[47] FlG. 6 is a schematic view illustrating a method for scanning an object through the volume X-ray CT scanner using a translational and rotational scanning manner according to the present invention.
[48] As shown in FlG. 6, the scanning method is progressed using the following process.
First, an initial scanning starts from A of FlG. 6.
[49] Here, while an object 50 is moved from an A position of FlG. 6 to a B position of
FlG. 6 with making a translational movement in a +X-axis direction. In this scanning process, if the detector assembly 15 is a 1 -dimensional detector assembly arranged in one line, one sheet of 2-dimensional X-ray image is obtained.
[50] In addition, the object stops at the B position of FlG. 6, and is then rotated at a certain small angle to a C position of FlG. 6. In this state, the object makes a translational movement in a -X-axis direction to a D position of FlG. 6, and another 2-dimensional X-ray image is obtained in this scanning process.
[51] After that, the object stops at a D position of FlG. 6, and is then rotated at a certain small angle to an E position of FIG. 6. Then, the object makes a translational movement in a +X-axis direction to a F position of FlG. 6, and then further another 2-dimensional X-ray image is obtained.
[52] If such movements are repeated to rotate the object more than 180 degrees, a plurality of 2-dimensional X-ray images are obtained.
[53] These images are identical to that obtained using a X-ray beam, which is a parallel beam in a X axis and a divergent beam in a Z direction, and a 2-dimensional X-ray detector assembly. Each of the 2-dimensional images is similar to an image acquired by each view in a volume X-ray CT scanner, so it may be called a volume X-ray CT scanner using a translational and rotational scanning manner, and it may apparently obtain a slice image by means of calculation of reconstruction.
[54]
[55] The present invention has been illustrated and described in relation to specific embodiments, but it would be easily understood by those having ordinary skill in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention defined in the appended claims. Industrial Applicability [56] As described above, the volume X-ray CT scanner according to the present invention is configured so that an arrangement direction of a X-ray detector assembly and a rotational axis are all disposed in parallel with a Z-axis direction, a translational moving unit and a rotational unit are used for scanning an object, thereby allowing easy CT scanning of an object with large size, capable of reducing the number of detectors and thus allowing manufacture of the CT scanner at a lower cost.

Claims

Claims
[1] A volume X-ray CT (Computerized Tomography) scanner, wherein an arrangement direction (16) of a 1 -dimensional X-ray detector assembly (15) and an axial direction of rotation (61) are all disposed in parallel with a Z-axis direction, and an object is scanned using a translational moving unit (70) and a rotational unit (80).
[2] The volume X-ray CT scanner according to claim 1, wherein a focal spot (42) of X-ray, a surface of a rotating plate (81) of the rotational unit, and one end of the X-ray detector assembly are arranged at the same height.
[3] The volume X-ray CT scanner according to claim 1, wherein an axis of an anode (41) in a X-ray tube and the arrangement direction of the X-ray detector assembly (15) are disposed perpendicularly.
[4] The volume X-ray CT scanner according to claim 1, wherein the X-ray detector assembly has a linear or a curved shape.
[5] The volume X-ray CT scanner according to claim 1, wherein the 1 -dimensional X-ray detector assembly (15) employs a 2-dimensional X-ray detector assembly in which a plurality of 1 -dimensional X- ray detector assembles are laminated.
PCT/KR2006/002540 2005-07-13 2006-06-29 Volume x-ray ct scanner WO2007007963A1 (en)

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Application Number Priority Date Filing Date Title
KR1020050063019A KR100725617B1 (en) 2005-07-13 2005-07-13 X-ray Volume CT scanner having a method of translational and rotational scanning
KR10-2005-0063019 2005-07-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928446A (en) * 2012-11-10 2013-02-13 福建省豪用环保科技有限公司 Computed tomography imaging method and imaging device special for rim or tire rim
EP2654016A3 (en) * 2009-02-20 2017-03-22 Werth Messtechnik GmbH Method for measuring an object
IT202000014239A1 (en) 2020-06-15 2021-12-15 Biometic S R L TUNNEL COMPUTERIZED TOMOGRAPH AND METHOD FOR PERFORMING A COMPUTERIZED TOMOGRAPHY OF AN OBJECT

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001087260A (en) * 1999-08-16 2001-04-03 Analogic Corp Device and method for reconstituting three-dimensional image in computed tomographic system by helical scan conical beam
JP2003052684A (en) * 2001-08-09 2003-02-25 Toshiba Corp X-ray ct unit
KR20050028824A (en) * 2003-09-19 2005-03-23 지이 메디컬 시스템즈 글로발 테크놀러지 캄파니 엘엘씨 Radiation computed tomography apparatus and tomographic image data generating method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001087260A (en) * 1999-08-16 2001-04-03 Analogic Corp Device and method for reconstituting three-dimensional image in computed tomographic system by helical scan conical beam
JP2003052684A (en) * 2001-08-09 2003-02-25 Toshiba Corp X-ray ct unit
KR20050028824A (en) * 2003-09-19 2005-03-23 지이 메디컬 시스템즈 글로발 테크놀러지 캄파니 엘엘씨 Radiation computed tomography apparatus and tomographic image data generating method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2654016A3 (en) * 2009-02-20 2017-03-22 Werth Messtechnik GmbH Method for measuring an object
CN102928446A (en) * 2012-11-10 2013-02-13 福建省豪用环保科技有限公司 Computed tomography imaging method and imaging device special for rim or tire rim
IT202000014239A1 (en) 2020-06-15 2021-12-15 Biometic S R L TUNNEL COMPUTERIZED TOMOGRAPH AND METHOD FOR PERFORMING A COMPUTERIZED TOMOGRAPHY OF AN OBJECT
EP3926333A1 (en) 2020-06-15 2021-12-22 Biometic S.r.l. Ct scanner and method for performing a ct examination of an object
US11609189B2 (en) 2020-06-15 2023-03-21 Biometic S.R.L. CT scanner and method for performing a CT examination of an object

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