WO2014097084A1 - Ajustement de tube à rayons x - Google Patents

Ajustement de tube à rayons x Download PDF

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Publication number
WO2014097084A1
WO2014097084A1 PCT/IB2013/060901 IB2013060901W WO2014097084A1 WO 2014097084 A1 WO2014097084 A1 WO 2014097084A1 IB 2013060901 W IB2013060901 W IB 2013060901W WO 2014097084 A1 WO2014097084 A1 WO 2014097084A1
Authority
WO
WIPO (PCT)
Prior art keywords
ray tube
housing assembly
ray
tube housing
mounting plate
Prior art date
Application number
PCT/IB2013/060901
Other languages
English (en)
Inventor
Volker Onken
Original Assignee
Koninklijke Philips N.V.
Philips Deutschland Gmbh
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 Koninklijke Philips N.V., Philips Deutschland Gmbh filed Critical Koninklijke Philips N.V.
Publication of WO2014097084A1 publication Critical patent/WO2014097084A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02—Constructional details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes

Definitions

  • the present invention relates to the adjustment of an X-ray tube, and in relates in particular to an X-ray tube housing assembly, and X-ray imaging system, and a method for aligning a focal spot of an X-ray tube.
  • the X-ray tube and its focal spot must be aligned with respect to other components of the X-ray imaging system, such as the collimator or the detector.
  • an adjustment of the X-ray tube is performed upon mounting the X-ray tube to the system.
  • US 7,476,024 B2 describes an X-ray source and a mounting flange for a pre-adjustable mechanical collimator interface.
  • the procedure of adjusting of the focal spot is cumbersome and time-consuming.
  • an X-ray tube housing assembly comprising a system interface for mounting the X-ray tube housing assembly to an X-ray system, and an X-ray tube support for mounting an X-ray tube with an anode disc rotating around a rotation axis.
  • the X-ray tube support is connected to the system interface.
  • the X-ray tube support further comprises an X-ray tube adjustment device configured to adapt the orientation of an X-ray tube in at least one degree of freedom in relation to the X-ray tube housing assembly, wherein the at least one degree of freedom comprises a first, rotating adjustment direction around the rotation axis of the anode disc.
  • the X-ray tube adjustment device is also configured to adapt the orientation of the X-ray tube in relation to the system interface. Since the alignment of a system interface and the X-ray tube housing assembly can be provided with high accuracy, for example by machining processes, it is possible to align the X-ray tube with respect to the X-ray tube housing assembly without having the necessity for assembling the X-ray tube to further parts of the X-ray imaging system. Rather, the alignment is provided by the X-ray tube housing assembly itself. Since the geometrical relations, i.e.
  • the possible misalignment during the assembly or manufacture of an X-ray tube namely the arrangement of the rotating anode and the cathode inside a vacuum envelope, which, compared to other procedural steps, has a lower accuracy, can be adjusted by the X-ray tube adjustment device before mounting or assembling the X-ray tube to the X-ray imaging system.
  • the interface to the X-ray system allows the attachment of the X-ray tube housing assembly to the X-ray system with respect to the ideal focal spot of the X-ray tube housing assembly, since the focal spot is adjusted with respect to the X-ray tube housing assembly.
  • the X-ray tube support is part of the X-ray tube housing assembly and can therefore be handled from the outside.
  • the at least one degree of freedom comprises two degrees of freedom with a second, linear adjustment direction aligned with the rotation axis of the anode disc.
  • two degrees of freedom relates to two movement directions: one is a translational movement and the other one is a rotating movement.
  • a collimator interface for mounting a collimator to the X-ray tube housing assembly.
  • the collimator interface and the system interface are fixedly aligned with respect to each other and with respect to the X-ray tube housing assembly.
  • the X-ray tube adjustment device is also configured to adapt the orientation of the X-ray tube in relation to the collimator interface.
  • the collimator interface can be provided in spatial relation to the X-ray tube housing assembly with high accuracy, for example by machining processes.
  • the interface to the collimator allows the attachment of the collimator with respect to the ideal focal spot in the X-ray tube housing, since the X-ray tube can be adjusted with respect to the interface.
  • only one of the collimator interface and the system interface is fixedly aligned with respect to the X-ray tube housing assembly.
  • both the collimator interface and the system interface are fixedly aligned with respect to the X-ray tube housing assembly.
  • the X-ray tube housing assembly comprising the system interface and the X-ray tube support with the X-ray tube adjustment device, is provided without the X-ray tube.
  • the X-ray tube housing assembly is provided with an inserted X-ray tube to be adjusted with its focal spot in relation to the X-ray tube housing assembly.
  • the X-ray tube support comprises an opening for inserting at least a part of an X-ray tube.
  • the X-ray tube adjustment device comprises a mounting member in form of a mounting plate for mounting the X-ray tube.
  • the mounting plate is closing the opening.
  • the mounting plate is further fixedly secured to the X-ray tube support by screws, wherein for the insertion of the screws, a plurality of elongated through- holes are provided in the mounting plate that are elongated in a circular manner along the rotating adjustment direction.
  • the mounting plate is movable around the rotation axis of the anode disc with not-tightened screws. Instead of screws, also other releasable fastening elements can be provided.
  • the opening is a circular opening
  • a sliding sealing is provided on an inner side of the circular opening to be in sealing contact with a circular abutment face of the mounting plate to seal off a heat transfer volume provided by the X-ray tube housing assembly.
  • the X-ray tube or at least a part of it, is arranged within the heat transfer volume.
  • an adjustment ring with an inner thread is provided for engagement with an outer thread of the mounting plate.
  • the adjustment ring comprises an abutment surface for abutting against a support surface of the X-ray tube support.
  • the adjustment ring provides an adaptable positioning of the X-ray tube in relation to the X-ray tube housing assembly along the linear adjustment direction.
  • the adjustment ring For adjustment in the linear adjustment direction, the adjustment ring is rotated in relation to the mounting plate such that a translational movement of the X-ray tube takes place.
  • the X-ray tube housing assembly comprises a primary enclosing structure, and the enclosing structure provides a heat transfer volume for a cooling fluid for cooling a vacuum housing of an X-ray tube.
  • an X-ray tube is provided, which is attached to the mounting plate.
  • the X-ray tube is arranged at least partly in the heat transfer volume.
  • the orientation of the focal spot of the X-ray tube is adjustable in relation to the X-ray tube housing assembly in a mounted state of the X-ray tube.
  • the X-ray tube is fully assembled, comprising a sealed vacuum.
  • the heat transfer volume is sealed and at least partly filled with the cooling fluid.
  • an X-ray imaging system comprising an X-ray source, an X-ray detector, and a support structure.
  • the X-ray source and the X-ray detector are mounted to the support structure.
  • the X-ray source comprises an X-ray tube housing assembly according to one of the above-mentioned examples, and comprises an X- ray tube.
  • the X-ray tube housing assembly is mounted to the support structure by the system interface.
  • a focal spot of the X-ray tube is adjustable in its alignment with respect to the X- ray detector by the X-ray adjustment device.
  • a method for aligning a focal spot of an X-ray tube comprising the following steps:
  • the at least one degree of freedom comprises two degrees of freedom with a second, linear adjustment direction aligned with the rotation axis of the anode disc.
  • the focal spot of the X-ray tube is aligned by moving the X-ray tube in the first, rotating adjustment direction and in the second, linear adjustment direction.
  • the adjusting is performed with a fully assembled X-ray tube housing assembly having a sealed X-ray tube vacuum and a sealed heat transfer volume, which is at least partly filled with a cooling fluid.
  • the X-ray tube is mounted to a further, so-to-speak intermediate structure, namely the housing structure.
  • a further, so-to-speak intermediate structure namely the housing structure.
  • a second interface is provided for mounting a collimator directly to the intermediate structure.
  • an alignment of the X-ray tube with respect to the collimator is provided.
  • this second aspect of the alignment i.e. the alignment with respect to the collimator, is provided without the necessity to mount the X-ray tube to an X-ray imaging system. Since the adjustment of the X-ray tube in relation to the intermediate structure is performed with a fully assembled X-ray tube, for example already inserted into a heat transfer volume, the adjustment is of course also possible on an X-ray imaging system, to which the intermediate structure has been mounted to.
  • an adjustment of the X-ray tube's focal spot position in relation to the so-to-speak optical system of the X-ray imaging system is also provided at further points in time, i.e. during the operation, i.e. lifetime of an X-ray tube.
  • an X-ray imaging system for example in case of wear of the anode's focal track.
  • Fig. 1 shows a schematic cross-section of an example for an X-ray tube housing assembly
  • Fig. 2 shows a perspective view of a further example of an X-ray tube housing assembly
  • Fig. 3 shows a further example of an X-ray tube housing assembly in a perspective cross-section
  • Fig. 4 shows a cross-section in a perspective view of the example of Fig. 2;
  • Fig. 5 shows a detailed section of a part of Fig. 4.
  • Fig. 6 shows a cross-section of the example of Figs. 4 and 5;
  • Fig. 7 shows a schematic setup of an X-ray imaging system with an X-ray tube housing assembly
  • Fig. 8 shows basic steps of an example of a method for aligning a focal spot of an X-ray tube.
  • Fig. 1 shows an X-ray tube housing assembly 10, comprising a system interface 12 for mounting the X-ray tube housing assembly to an X-ray imaging system.
  • an X-ray tube support 14 for mounting an X-ray tube with an anode disc rotating around the rotation axis is provided.
  • an X-ray tube 16 is indicated with a dashed line structure.
  • the X-ray tube 16 is having an anode disc 18 rotating around a rotation axis 20.
  • a cathode 22 is indicated, providing an electron beam 24, which generates an X- ray radiation beam 26 upon impinging on the anode 18.
  • X-ray tube 16 is not part of the X-ray tube housing assembly 10 shown in Fig. 1.
  • the X-ray tube support shown as a simple frame line only, is connected to the system interface 12.
  • the X-ray tube support 14 further comprises an X-ray tube adjustment device 28, configured to adapt the orientation of an X-ray tube in at least one degree of freedom in relation to the X-ray tube housing assembly 10, wherein the at least one degree of freedom comprises a first, rotating adjustment direction around the rotation axis 20 of the anode disc.
  • the first, rotating adjustment direction is indicated with a circular arrow 30.
  • the adjustment device 28 provides the possibility to do the alignment of the focal spot in the X-ray tube housing assembly as a last step of the assembling process without opening or re-mounting of parts of the X-ray tube housing.
  • the X-ray tube adjustment device 28 will be explained with reference to Figs. 3 following further below.
  • the X-ray tube housing assembly 10 is provided such that an X-ray tube can be partly inserted. In another example, the X-ray tube housing assembly 10 is provided such that an X-ray tube can be inserted completely.
  • the X-ray tube support 16 is provided as a frame structure in one example. In another example, the X-ray tube support 16 is provided as an enclosure structure acting as a part of a housing structure.
  • Fig. 2 shows a perspective view of a further example of the X-ray tube housing assembly 10.
  • the X-ray tube support 14 is provided as a housing segment, to which the system interface 12 is attached to, or formed integrally. Further, the X-ray tube 16 is shown as being completely inserted into the housing structure of the X-ray tube support 14. In another example (not shown), the X-ray tube 16 is partly inserted into the housing structure of the X-ray tube support 14.
  • a further example is also shown in relation with Fig. 2, but which further example is also provided without any other particular features shown in Fig. 2.
  • a collimator interface 32 is provided for mounting the collimator (not shown) to the X-ray tube housing assembly 10.
  • the collimator interface 32 and the system interface 12 are fixedly aligned with respect to each other and with respect to the X-ray tube housing assembly 10.
  • the collimator interface 32 and the system interface 12 are provided by machining processes.
  • Fig. 3 shows a perspective cross-section of a further example of the X-ray tube housing assembly 10.
  • the X-ray tube support 14 comprises an opening 36 for inserting at least a part of the X-ray tube 16.
  • the X-ray adjustment device 28 comprises a mounting member 38 in form of a mounting plate 40 for mounting the X-ray tube 16.
  • the mounting plate 40 is closing the opening 36.
  • the mounting plate 40 is further fixedly secured to the X-ray tube support 14 by screws 42.
  • a plurality of elongated through- holes 44 is provided in the mounting plate 40.
  • the elongated through-holes 44 are elongated in a circular manner along the rotating adjustment direction 30.
  • the mounting plate 40 is movable around the rotation axis 20 of the anode disc 18 with not-tightened screws.
  • the elongated through-holes allow a rotational adjustment with inserted, but not fully tightened screws, i.e. loose screws.
  • the elongated through-holes may alternatively be also provided as large holes.
  • the mounting plate is an intermediate mounting element for connecting the X- ray tube to the X-ray tube housing assembly.
  • the intermediate mounting element provides the adjustment of the orientation of the X-ray tube in relation to the X-ray tube housing assembly.
  • the mounting plate is also referred to as adjusting adapter component. The adjustment is provided by moving the mounting plate in relation to the X-ray tube support, while the X-ray tube itself remains constant with respect to the mounting plate.
  • the mounting plate may be an integrated part of the X-ray tube's housing structure.
  • the X-ray tube 16 is provided with a vacuum housing 46, inside which the rotating anode 18 and the cathode 22 are provided. Further, drive means 48 in form of a stator are shown surrounding the part of the vacuum housing 46 inside which the respective rotor of the anode disc 18, which is mounted to a stem or shaft 50, is provided.
  • the X-ray tube 16 further comprises an X-ray transparent window 52 for the emission of X-ray radiation (not further shown).
  • the X-ray tube support 14 is enclosing a heat transfer volume 54.
  • the heat transfer volume 54 may be filled with a cooling fluid to cool the X-ray tube, i.e. the vacuum enclosing structure 46.
  • the opening 36 is a circular opening and a sliding sealing 56 is provided on an inner side 58 of the circular opening to be in sealing contact with a circular abutment face 60 of the mounting plate 40 to seal off the heat transfer volume 54, provided by the X-ray tube housing assembly 10.
  • a part of the X-ray tube 16 is arranged within the heat transfer volume 54.
  • the X-ray tube housing assembly 10 comprises a primary enclosing structure 62 enclosing the heat transfer volume 54 for the cooling fluid for cooling the vacuum housing of the X-ray tube.
  • the primary enclosing structure 62 comprises a central part 64, e.g. having a cylindrical form, and a primary enclosing cup 66 forming a sealing end cup portion.
  • the primary enclosing cup 66 may be arranged opposite to the opening 36 for inserting at least a part of the X-ray tube.
  • the central part 64 may be provided by the X-ray support structure 14, as shown. However, it is also possible to provide the central part 64 by an additional cylindrical or otherwise shaped structure, attached to the X-ray support structure 14.
  • the primary enclosing cup 66 may be provided as a separate cup (not further shown), or may be formed integrally, e.g. in one piece with the central part 64, as shown.
  • an inlay 68 is provided for the purpose of further protection, for example as security measurements against emitting X-ray protection, i.e. to prevent any unwanted radiation, e.g. scattered radiation, from passing through the housing to the outside.
  • a secondary enclosing structure 70 is provided by the mounting plate 40 enclosing a part of the X-ray tube.
  • the secondary enclosing structure 70 is sealingly connected to the vacuum tube, for example by a sealing flange 72.
  • An isolating connection (not further shown) may be provided between the secondary enclosing structure, i.e. the flange 72, and the vacuum tube 46.
  • a connecting flange 74 may be provided on the vacuum tube's housing.
  • a secondary volume 76 is provided, surrounding a part of the X-ray tube 16, and in particular the drive means 48.
  • the secondary volume is provided by a first portion 76a and a second portion 76b, wherein the first portion 76a is arranged so-to-speak on the outer side of the mounting plate 40, and the second portion 76b is arranged on an inner side of the mounting plate 40.
  • the two portions are connected.
  • the two portions are not in fluid connection, for example.
  • the secondary volume may also be used for heat transfer/cooling purposes.
  • the mounting plate 40 may comprise a plate opening 78, for example such that a part of the X-ray tube can extend through the plate opening, as mentioned before.
  • the secondary enclosing structure 70 may comprise a secondary enclosing cup 80 attached to the mounting plate 40.
  • the secondary enclosing cup 80 encloses the part of the X-ray tube extending through the plate opening, i.e. the first part 76a of the secondary volume.
  • the secondary enclosing cup 80 may be provided as a separate cup, as shown in Fig. 3, sealingly connected to the mounting plate 40.
  • the secondary enclosing cup can also be formed integrally, e.g. in one piece with the mounting plate 40 (not further shown).
  • Fig. 4 shows a further example of the X-ray tube housing assembly 10, where similar components are shown in the same manner as in Fig. 3 and are therefore not all provided with the respective reference numbers.
  • the at least one degree of freedom comprises two degree of freedom with a second, linear adjustment direction aligned with the rotation axis 20 of the anode disc 18.
  • the second linear adjustment direction is indicated with an arrow 34.
  • an adjustment ring 82 is provided.
  • the adjustment ring 82 has an inner thread 84 for
  • the adjustment ring 82 comprises an abutment surface 88 for abutting against a support surface 90 of the X-ray tube support 14.
  • the adjustment ring 82 provides an adaptable positioning, as indicated by gap 92 in Fig. 5, of the X-ray tube 16 in relation to the X-ray tube housing assembly 10 along the linear adjustment direction 34.
  • the adjustment ring 82 is rotated in relation to the mounting plate 40 such that translational movement, indicated with a double arrow 94 in Fig 5 and 34 in Figs. 3, 4 and 6, of the X-ray tube 16 takes place.
  • the inner thread of the adjustment ring and the outer thread of the mounting plate, i.e. the threads 84, 86 are provided with matching buttress threads.
  • the buttress threads are provided to prevent movement while the screw connection is tightened.
  • the screws 42 For adjustment in a linear direction, the screws 42 have to be tightened or loosened accordingly.
  • variable distance is provided by adjustable distance means, such as screws inserted in a thread of the mounting plate and variably extending across the mounting plates surface such that the screws are abutting the support surface 90 (not shown).
  • variable distance means are provided to be inserted between the mounting plate and the support surface 90.
  • Fig. 5 shows an integrally formed secondary enclosing cup 80.
  • Fig. 6 shows a cross-section through the X-ray tube housing assembly 10 with an inserted X-ray tube 16. Since same features are shown in the same manner as in Figs. 3, 4, and 5, references numbers have been omitted for some of the features and components.
  • the orientation of a focal spot of the X-ray tube 16 is adjustable in relation to the X-ray tube housing assembly 10 in the mounted state of the X-ray tube 16, as, for example, shown in Fig. 6.
  • the X-ray tube 16 is fully assembled, comprising a sealed vacuum 96 and the heat transfer volume 54 is sealed and at least partly filled with a cooling fluid.
  • the X-ray tube housing assembly 10 is assembled and mounted in a final state ready for use, wherein an adjustment of the orientation of the focal spot in relation to the X-ray tube housing assembly is still provided, for example in the first, rotating adjustment direction 30 and the second, linear adjustment direction 34.
  • the X-ray tube housing assembly shown in Figs. 2 to 6 is provided without the X-ray tube, although the X-ray tube 16 is shown throughout these figures. It must be understood that the X-ray tube 16 is shown in the figures for describing certain aspects. Nevertheless, according to examples (not further shown), the respective examples of the X-ray tube housing assembly 10 are provided without the X-ray tube 16.
  • the X-ray tube housing assembly 10 is provided with the X-ray tube 16, i.e. the X-ray tube housing assembly 10 comprises the X-ray tube 16, as shown in the examples in Figs. 2 to 6.
  • Fig. 7 shows an X-ray imaging system 100, comprising an X-ray source 102, an X-ray detector 104, and a support structure 106, for example a C-arm structure. However, it must be noted that also other X-ray imaging types, such as a CT, or also standing systems are provided.
  • the X-ray source 102 and the X-ray detector 104 are mounted to the support structure 106.
  • the X-ray source 102 comprises an X-ray tube housing assembly 10 according to one of the above-mentioned examples, comprising an X-ray tube.
  • the X-ray tube housing assembly 10 (not shown in detail) is mounted to the support structure 106 by the system interface (also not shown in detail).
  • a focal spot of the X-ray tube is adjustable in its alignment with respect to the X-ray detector 104 by the X-ray adjustment device 28 (also not shown in detail in Fig. 7).
  • a collimator (also not further shown) may be provided in fixed relation to the X-ray source, and the focal spot of the X-ray tube is adjustable in its alignment with respect to the collimator by the X-ray adjustment device.
  • an adjustment of the orientation of the focal spot in relation to the support structure 106 is provided by the X-ray adjustment device 28.
  • the collimator may be mounted to the X-ray source by a collimator interface provided by the X-ray tube housing assembly.
  • Fig. 8 shows a method 200 for aligning a focal spot of an X-ray tube, comprising the following steps: In a first step 202, an X-ray tube housing assembly with a system interface for mounting the X-ray tube housing assembly to an X-ray system and an X-ray tube support is provided.
  • an X-ray tube with an anode disc rotating around a rotation axis is mounted to the X-ray tube support comprising an X-ray tube adjustment device configured to adapt the orientation of an X-ray tube in at least one degree of freedom in relation to the X-ray tube housing assembly.
  • the at least one degree of freedom comprises a first, rotating adjustment direction around the rotation axis of the anode disc.
  • a measuring device is provided, and an orientation of a focal spot of the X-ray tube is measured.
  • a focal spot of the X-ray tube is adjusted by moving the X-ray tube in at least the first, rotating adjustment direction.
  • the first step 202 is also referred to as step a), the second step 204 as step b), the third step 206 as step c), and the fourth step 208 as step d).
  • the measuring device is a collimator, e.g. attached to a collimator interface provided by the X-ray tube housing assembly.
  • the measuring device is a separate device for detecting the location of the focal spot and the respective central beam for aligning a collimator.
  • the at least one degree of freedom comprises two degrees of freedom with a second, linear adjustment direction aligned with the rotation axis of the anode disc.
  • the focal spot of the X-ray tube is aligned by moving the X-ray tube in the first, rotating adjustment direction and in the second, linear adjustment direction.
  • the X-ray tube support for alignment of the focal spot, after un-tightening of the screws, can be moved in longitudinal direction of the X-ray tube housing assembly by rotating the adjustment ring on the thread of the mounting plate.
  • the alignment of the focal spot in a direction 90° to the longitudinal axis can then be done by rotating the X-ray tube support in the central part, i.e. by rotating the mounting member 38 in form of the mounting plate 40 and thus the tube inside the opening 36. It must be noted that the alignment in the
  • the longitudinal direction and the alignment in the rotational direction can be provided also in a different order, or also simultaneously.
  • the screws are tightened to fixate the X-ray tube with the focal spot in the aligned position.
  • the depth from surface to interface to collimator to the focal spot can be aligned with distance sheets mounted on the interface surface (not further shown).
  • the adjusting is performed with a fully assembled X-ray tube housing assembly having a sealed X-ray tube vacuum and a sealed heat transfer volume, which is at least partly filled with a cooling fluid.

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  • X-Ray Techniques (AREA)

Abstract

La présente invention concerne l'ajustement d'un tube à rayons X. Afin de faciliter le procédé d'assemblage d'un système d'imagerie à rayons X eu égard aux exigences d'alignement, un ensemble d'accueil de tube à rayons X (10) selon l'invention comprend une interface de système pour monter ledit ensemble d'accueil de tube à rayons X sur un système à rayons X, et un support de tube à rayons X (14) pour monter un tube à rayons X (16) avec un disque d'anode (18) tournant autour d'un axe de rotation (20). Ledit support de tube à rayons X est relié à l'interface de système. Ledit support de tube à rayons X comprend en outre un dispositif d'ajustement de tube à rayons X (28) conçu pour adapter l'orientation d'un tube à rayons X sur au moins un degré de liberté par rapport à l'ensemble d'accueil de tube à rayons X, ledit/lesdits degré(s) de liberté comprenant un premier sens d'ajustement de rotation (30) autour de l'axe de rotation du disque d'anode. Selon un mode de réalisation donné à titre d'exemple, ledit degré de liberté comprend en outre un degré de liberté supplémentaire comprenant un second sens d'ajustement linéaire (34) aligné sur l'axe de rotation du disque d'anode.
PCT/IB2013/060901 2012-12-19 2013-12-13 Ajustement de tube à rayons x WO2014097084A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261739096P 2012-12-19 2012-12-19
US61/739,096 2012-12-19

Publications (1)

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WO2014097084A1 true WO2014097084A1 (fr) 2014-06-26

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853466U (ja) * 1981-09-30 1983-04-11 株式会社東芝 ステレオｘ線管装置
US5067146A (en) * 1989-11-09 1991-11-19 Siemens Aktiengesellschaft X-ray radiator
US6249569B1 (en) * 1998-12-22 2001-06-19 General Electric Company X-ray tube having increased cooling capabilities
US7476024B2 (en) 2002-02-07 2009-01-13 Koninklijke Philips Electronics N.V. Pre-adjustable mechanical collimator interface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853466U (ja) * 1981-09-30 1983-04-11 株式会社東芝 ステレオｘ線管装置
US5067146A (en) * 1989-11-09 1991-11-19 Siemens Aktiengesellschaft X-ray radiator
US6249569B1 (en) * 1998-12-22 2001-06-19 General Electric Company X-ray tube having increased cooling capabilities
US7476024B2 (en) 2002-02-07 2009-01-13 Koninklijke Philips Electronics N.V. Pre-adjustable mechanical collimator interface

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