EP2252213A1 - Procédé et agencement pour un système d'imagerie mobile - Google Patents

Procédé et agencement pour un système d'imagerie mobile

Info

Publication number
EP2252213A1
EP2252213A1 EP08731623A EP08731623A EP2252213A1 EP 2252213 A1 EP2252213 A1 EP 2252213A1 EP 08731623 A EP08731623 A EP 08731623A EP 08731623 A EP08731623 A EP 08731623A EP 2252213 A1 EP2252213 A1 EP 2252213A1
Authority
EP
European Patent Office
Prior art keywords
axis
arm
aligned
central longitudinal
generally
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP08731623A
Other languages
German (de)
English (en)
Inventor
Yann Delmas
Andreas C. Van Der Ham
Bernard Bouvier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magnetic Elektromotoren GmbH
General Electric Co
Original Assignee
Magnetic Elektromotoren GmbH
General Electric Co
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 Magnetic Elektromotoren GmbH, General Electric Co filed Critical Magnetic Elektromotoren GmbH
Publication of EP2252213A1 publication Critical patent/EP2252213A1/fr
Withdrawn legal-status Critical Current

Links

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
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4464—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit or the detector unit being mounted to ceiling
    • 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
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
    • A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm

Definitions

  • the subject matter herein relates generally to image acquisition, and more specifically, to a method and arrangement for a mobile imaging machine or system.
  • the mobile imaging machine or system can be configured for medical diagnostic or industrial imaging.
  • Medical diagnostic imaging systems encompass a variety of imaging modalities, such as x-ray systems, computerized tomography (CT) systems, ultrasound systems, electron beam tomography (EBT) systems, magnetic resonance (MR) systems, and the like.
  • Medical diagnostic imaging systems generate images of an object, such as a patient, for example, through exposure to an energy source, such as x-rays passing through a patient, for example.
  • the generated images may be used for many purposes. For instance, internal defects in an object may be detected. Additionally, changes in internal structure or alignment may be determined. Fluid flow within an object may also be represented. Furthermore, the image may show the presence or absence of objects in the patient.
  • the information gained from medical diagnostic imaging has applications in many fields, including medicine and manufacturing.
  • a certain conventional medical diagnostic imaging system includes a mobile C-arm system.
  • the mobile C-arm system may be used for general surgery, vascular procedures, and cardiac procedures, for example.
  • the conventional mobile C-arm system is equipped with a radiological source or transmitter in opposed relation to a radiological detector (e.g., an image intensifier), and is moved in relation to the imaged subject or patient on tabletop. With the patient positioned between the radiological source and detector, the C-arm system is moved and rotated so as to pass radiation through the imaged subject from various directions. As the radiation passes through the patient, anatomical structures cause variable attenuation of the radiation passing through and received at the detector. The detector translates the attenuated radiation into an image employed in diagnostic evaluations. In typical medical procedures around such diagnostic imaging systems, multiple physicians, nurses, and technicians are located in close proximity to the imaged subject.
  • a support assembly in movable support of a radiation source and detector operable in combination to acquire a radiological image of a subject positioned on a table is provided.
  • the table defined by a central longitudinal axis.
  • the support assembly includes an offset arm pivotally coupled from a mobile carriage about a first axis generally vertically aligned.
  • An elbow is pivotally coupled at the offset arm about a second axis.
  • the first and second axes are each generally vertically aligned and spaced an offset distance from one another.
  • a mobile arm is mounted in support of a radiation source and detector.
  • the mobile arm is pivotally coupled at the elbow about a third axis that is generally horizontal aligned and in general alignment with a central longitudinal axis of a table in a vertical plane.
  • the mobile arm is also supported to rotate about a fourth axis that is generally horizontal aligned and in general perpendicular alignment relative to the third axis.
  • the first axis, the second axis, the third axis, and the fourth axis all include a common point of intersection with one another.
  • an arrangement operable to acquire a diagnostic image of a subject includes a table to receive the subject to be imaged, a carriage, an offset arm, and an elbow.
  • the table is defined by a central longitudinal axis.
  • the carriage is operable to move relative to the table.
  • the offset arm includes a first end opposite a second end. The first end of the offset arm is pivotally supported at the carriage about a first axis generally vertically aligned.
  • the elbow is pivotally supported at the second end of the offset arm about a second axis generally vertically aligned and spaced an offset distance from the first axis.
  • the arrangement further includes a radiation source configured in communication with a radiation detector to acquire the diagnostic image, and a mobile arm in support of the radiation source and the radiation detector.
  • the mobile arm is pivotally supported from the elbow about a third axis generally horizontally aligned above with the central longitudinal axis of the table in a vertical plane.
  • the mobile arm is also slidably supported to rotate about a fourth axis generally horizontal aligned perpendicular relative to the third axis.
  • the first axis, the third axis, and the fourth axis all include a common point of intersection with another.
  • a method of communicating radiation from a radiation source through a table to a radiation detector comprises the acts of sliding an carriage in a linear direction along a rail fixed and located above in a vertical direction in relation to the table; pivoting a first end of an offset arm about a first axis with respect to the carriage; pivoting an elbow with respect to the second end of the offset arm about a second axis generally vertically aligned and spaced an offset distance in a horizontal direction from the first axis; pivoting a mobile arm about a third axis in relation to the elbow, the third axis being generally horizontally aligned and generally aligned with a central longitudinal axis of the table in a vertical plane; rotating the mobile arm about a fourth axis in relation to the elbow, the fourth axis generally horizontal aligned and generally perpendicular aligned relative to the third axis; and transmitting radiation from a radiation source at one free end of the mobile arm toward the radiation detector.
  • FIG. 1 shows a schematic diagram of an elevation view of an embodiment of an arrangement of an imaging system in combination with a table in support of an imaged subject.
  • Fig. 2 shows a schematic diagram along line 2-2 in Fig. 1.
  • Fig. 3 shows a schematic diagram of a top plan view of the imaging system shown in Fig. 1, a mobile arm aligned laterally offset from the table.
  • Fig. 4 shows a schematic diagram of a top plan view of the imaging system shown in Fig. 1, a mobile arm aligned orthogonal to the table.
  • FIG. 5 illustrates a schematic diagram of a top plan view of another embodiment of an imaging system in relation to a table in support of an imaged subject.
  • Fig. 6 illustrates a schematic diagram of a top plan view of the imaging system shown in Fig. 5, a mobile arm co-aligned with the table.
  • Fig. 7 illustrates a schematic diagram of a top plan view of the imaging system shown in Fig. 5, a mobile arm aligned orthogonal to the table.
  • Fig. 1 illustrates an embodiment of an arrangement 100 that comprises an imaging system 105 operable to acquire a radiological image of an imaged subject 110 positioned on a table 115.
  • the imaged subject 110 is typically a patient or some portion of the patient.
  • the imaging system 105 can be operated remotely, for example so that an operator can be shielded from radiation. Alternatively, the imaging system 105 can be placed in an examining or operating room so that a health care provider can view images while performing a medical procedure of the imaged subject 110.
  • the table 115 generally comprises a tabletop 120 supported from a base 125 independent from the imaging system 105.
  • the tabletop 120 is generally configured to receive the imaged subject 110 along a central longitudinal axis 128 (See Figs 2 - 4).
  • the table 115 can be fixed or moveable.
  • the table 115 can comprise various conventional advance/withdraw mechanisms, lift mechanisms and/or tilt mechanisms operable to move the tabletop 120 and imaged subject 110 to a desired raised/lowered, tilted, and/or advanced/withdrawn position. Accordingly, the table 115 can be interfaced with the imaging system 105 to communicate control and positioning of the table 115 in relation to the imaging system 105.
  • the illustrated imaging system 105 is a mobile X- ray imaging system, operable to pass X-rays through a patient and then detect and process a diagnostic image for interpretation. Yet, the type of imaging system 105 (e.g., magnetic resonance imaging, radiological, etc.) can vary.
  • the illustrated imaging system 105 generally includes a radiation source 130 and a radiation detector or receiver 135.
  • the exemplary radiation source 130 generates X-ray photons preferably directed to pass through a collimator and form an x-ray beam.
  • the X-ray beam has an axis 138 that is substantially aligned with the center of the active area of the detector 135.
  • the X-ray beam has a vector that is defined by the axis of the X-ray beam in the direction of the detector 135.
  • the illustrated radiation source 130 is operable to generate X-rays, the type of radiation source 130 and respective detector 135 can vary.
  • the imaging system 105 further includes a support assembly 140 in mobile support of the radiation source 130 and detector 135 in relation to the imaged subject 110 resting on the table 115.
  • the support assembly 140 includes a mobile arm 145, supported by an elbow 150 from a mobile carriage system 155.
  • the illustrated mobile arm 145 is a C-arm having a pair of opposed free ends 160 and 165.
  • the radiation detector 135 is connected at the first free end 160, and the radiation detector 135 is connected at the second free end 165 in opposed so as to receive attenuated radiation passing through the imaged subject 110 located therebetween.
  • the shape of the mobile arm 145 can be curvilinear, angular, etc. and is not limiting. [0022] Still referring to Fig.
  • a collar or trolley assembly 170 is configured to slidably receive the mobile arm 145 therethrough so as to be rotatable about an axis of rotation 175 (See Fig. 2) aligned generally horizontal and perpendicular to the central longitudinal axis 128 of the tabletop 120.
  • a motorized drive 180 is configured to move the mobile arm 145 about the axis of rotation 175 in sliding relation through the collar assembly 170.
  • the elbow 150 is connected in pivotal support of the collar assembly 170 and the mobile arm 145.
  • the illustrated elbow 150 is generally L-shaped, and includes an upper free end 185 and lower free end 190.
  • the lower free end 190 of the elbow 150 is connected in rotational support of the collar assembly 170 and mobile arm 145 so as to rotate about an axis of rotation 195.
  • the axis of rotation 195 is aligned generally horizontal and perpendicular to the axis of rotation 175 of the mobile arm 145 about the collar assembly 170.
  • the axis of rotation 195 is also aligned generally parallel to the central longitudinal axis 128 (See Figs. 2-4) of the tabletop 120.
  • the illustrated elbow 150 is L-shaped, the shape of the elbow 150 can vary.
  • a motorized drive 200 is generally operable to rotate the mobile arm 145 and collar assembly 170 about the axis of rotation 195 with respect to the elbow 150.
  • the support assembly 140 is configured such that the axis of rotation 175 intersects the axis of rotation 195 of the mobile arm 145 at a point of intersection 205, herein referred to as the isocenter 205.
  • the mobile carriage system 155 generally includes a carriage 210 operable to move the collar assembly 170 and mobile arm 145 in a linear direction 212 along a rail support structure 215.
  • the illustrated rail support structure 215 includes a pair of parallel-aligned rails 220 fixed to overhead (e.g., to a ceiling 225) and configured to receive the carriage 210 therebetween.
  • the rail support structure 215 generally defines a central longitudinal axis 230 inline with the linear direction of travel 212 of the carriage 210.
  • the central longitudinal axis 230 of the rail support structure 215 is generally located above the axis of rotation 195 of the mobile arm 145 and the central longitudinal axis 128 of the tabletop 120 in the vertical direction.
  • the central longitudinal axis 230 of the rail support structure 215 is aligned such that, in top plan view, there is no offset between the central longitudinal axis 230 of the rail support structure 215, the rotation axis 195 of the mobile arm 145, and the central longitudinal axis 128 of the tabletop 120.
  • An offset arm 240 is connected in rotationally support of the elbow 150 and mobile arm 145 from the mobile carriage system 155.
  • a motorized swivel drive 245 is connected to rotate the offset arm 240 about a first axis 250 with respect to the carriage 210.
  • An elbow drive 255 is connected to rotate the elbow 150 about a second axis 260 with the respect to the offset arm 240.
  • the first and second axes 250 and 260 are both generally vertically aligned in parallel with one another, as well as spaced or offset a distance from one another in the general horizontal direction in top plan view.
  • a central longitudinal axis 262 of the offset arm 240 is generally linear aligned and extends through the first and second axes 250 and 260.
  • the illustrated offset arm 240 includes opposed, curvilinear-shaped free ends 265 and 270 and a pair of opposing, generally linear-shaped sides extending therebetween 275 and 280. As shown in Fig. 3, a general diameter 282 of the curvilinear-shaped free ends 265 and 270 is greater than a width 284 between the linear shaped sides 275 and 280, creating a generally figure-eight shape. In side elevation view as illustrated in Fig. 1, the circumferential edge free ends 265 and 270 and sides 275 and 280 of the offset arm 240 is rounded or curvilinear-shaped in the general vertical direction. This configuration of the offset arm 240 provides for enhanced maneuverability as well as an aesthetically appealing appearance.
  • the support assembly 140 of the imaging system 105 is at an exemplary parked or zero position, as illustrated in Figs. 1 and 2.
  • the central longitudinal axis 230 of the offset arm 240 and the axis of rotation 195 of the mobile arm 145 are both aligned in parallel with the central longitudinal axis 128 of the tabletop 120.
  • the first axis 250 about which the offset arm 240 rotates with respect to the carriage 210 intersects at the isocenter 205 of the support assembly 140.
  • the support assembly 140 is operable to move the mobile arm 145 and mounted radiation source 130 and detector 135 in the linear direction 212 in relation to the central longitudinal axis 128 of the tabletop 120.
  • the swivel drive 245 is operable to rotate the offset arm 240 about the first axis 250 with respect to the carriage 210 in a manner such that the first axis 250 continuously intersects the isocenter 205 of the support assembly 140. Accordingly, as illustrated in top plan view in Figs. 2 and 4, the mobile arm 145 and mounted radiation source 130 and detector 135 (See Fig. 1) can be rotated around the first axis 250 and/or the rotation axis 195 while maintaining the isocenter 205 (See Fig. 1) at a point of interest on the imaged subject 110.
  • the swivel drive 245 (See Fig. 1) is operable to rotate the offset arm 240 about the first axis 250 with respect to the carriage 210, allowing the mobile arm 145 to be positioned laterally offset to the right-hand side of the table 115 and the imaged subject 110.
  • the elbow 150 can also be rotated about the second axis 260 with respect to the offset arm 240 so as to align the rotation axis 195 of the mobile arm 145 in parallel relative to the longitudinal axis 128 of the tabletop 210 in a desired manner.
  • the movement of the mobile arm 145 and mounted radiation source 130 and detector 135 (See Fig. 1) to the laterally offset position from the table 115 enhances access for a clinician or physician (e.g., by an anesthesiologist) over the top and at the head of the imaged subject 110 during a medical procedure in a desired manner.
  • Fig. 4 illustrates a top plan view of the mobile arm 145 rotated by the elbow drive about the first axis 250 to a generally perpendicular alignment of the rotation axis 195 with the central longitudinal axis 128 of the tabletop 120.
  • the axis 138 See Fig. 1
  • the radiation source 130 and detector 135 maintains vertical alignment with the first axis 250.
  • the radiation source 130 and detector 135 are operable to capture radiological images of the subject 110 from head -to-toe, while allowing a clinician or physician access at the head of the imaged subject 110.
  • Figs. 3 and 4 illustrate movement of the mobile arm 145 laterally offset to the right-hand side of the tabletop 120 of the table 115 and imaged subject 110, it should be understood that the mobile arm 145 can be moved to an opposite laterally offset position at the left-hand side of the tabletop 210 and imaged subject 110 in a similar manner.
  • Fig. 5-7 illustrate another embodiment of an arrangement 300 that comprises imaging system 305 operable to capture a diagnostic image of a subject 310 on a table 315, similar to the arrangement 100 described above.
  • the imaging system 305 includes a support assembly 340 having a mobile arm 345 supported by an elbow 350 from a carriage 410 movable along a ceiling mounted rail support structure 415, and an offset arm 440, similar in construction and operation to the mobile arm 145, the elbow 150, the rail support structure 215, and the offset arm 240 of support assembly 140 described above.
  • the offset arm 440 is connected to rotate about a first axis 450 with respect to the carriage 410, and the elbow 350 is connected to rotate about a second axis 460 with respect to the offset arm 440.
  • the first and second axes 450 and 460 are each generally vertically aligned, spaced a distance (illustrated by arrow and reference 465) apart, and generally define a central longitudinal axis 470 of the offset arm 440 therethrough.
  • the rail support structure 415 of the support assembly 340 is spaced a clearance distance 490 from a tabletop 495 of the table 315 in the horizontal direction in top plan view. Accordingly, no part of the support assembly 340, including the mobile arm, 345, the elbow 350, the rail support structure 415 and the carriage 410 supported thereon, and the offset arm 440, is located over the imaged subject 310 resting on the table 315.
  • This configuration allows a clinician or physician (e.g., anesthesiologist) enhanced access over the head of the imaged subject 310.
  • the offset location of the rail support structure 415 of the support assembly 340 reduces a likelihood of interference with an ability of a procedural room's lighting system to properly illuminate an area of interest of the imaged subject 310.
  • the offset location of the rail support structure 415 of the support assembly 340 reduces a likelihood of interference with a flow of air typically provided over the imaged subject 310 in a conventional manner so as to maintain an elevated pressure zone that enhances a sterile environment over an area of interest of the imaged subject 310.
  • Fig. 6 is a top plan view illustrating rotation of the offset arm 440 to a generally perpendicular alignment with a central longitudinal axis 500 of the rail support structure 415.
  • a linear direction of movement (illustrated by arrow and reference 502) of the carriage 410 along the central longitudinal axis 500 of the rail support structure 415 is spaced a distance 505 from a central longitudinal axis 510 of the tabletop 315.
  • the distance 505 is generally equal to the offset distance 465 between generally vertically aligned first and second axes 450 and 460, respectively.
  • the central longitudinal axis 470 of the offset arm 440 is aligned generally perpendicular to the central longitudinal axis 500 of the rail support structure 315 and the linear direction of movement 502 of the carriage 410, the central longitudinal axis 510 of the tabletop 495 of the table 315 extends through an isocenter 512 of the imaging system 305, and the generally vertical rotation axis 460 of rotation of the elbow 350 about the offset arm 440.
  • FIG. 6 shows the central longitudinal axis 500 of the rail support structure 415 offset in one direction (e.g., left-hand side of subject 310) from the central longitudinal axis 510 of the table 315, it is understood that the central longitudinal axis 500 of the rail structure 415 can also be offset in the opposite direction from the central longitudinal axis 510 of the table 315 and is encompassed herein.
  • Fig. 7 illustrates a top plan view of the mobile arm 345 rotated with respect to the elbow 350 about the second axis 460.
  • the generally vertically aligned rotation axis 460 of the elbow 350 about the offset arm 440 is spaced a general horizontal distance 515 from the isocenter 512 and the rotation axis 480 of the mobile arm 345 about the collar 170 (See Fig. 1).
  • the generally horizontal distance 515 is about equal to the distance 505 such that the central longitudinal axis 510 of the tabletop 495 is generally aligned with the rotation axis 480 of the mobile arm 345 about the collar 170 (See Fig. 1).
  • the arrangement 300 allows movement of the tabletop 495 and/or the carriage 410 in the linear direction 502 in relation to one another so as to readily acquire radiological images from head-to-toe of the imaged subject 310.
  • This above-described subject matter is desired, for example, in following radiological dye through a circulation system of the imaged system 310.
  • the support assembly 340 is located in a parked or zero position illustrated in Fig. 5 where a generally horizontal rotation axis 480 (See Fig. 6) of the mobile arm 345 about the collar assembly 170 is aligned perpendicular relative to the central longitudinal axis 500 of the rail support structure 475.
  • the mobile arm 345 and the rail support structure 415 are laterally offset by a distance 505 to one side from the tabletop 490.
  • no part of the mobile arm 345 and the rail support structure 415 of the support assembly 340 is aligned in the vertical direction over the tabletop 490 and the imaged subject 310.
  • the ceiling mounted support assembly 340 enhances access and clearance for physician access over the imaged subject 310, and furthermore reduces a likelihood of interference with the above-described laminar flow of air and elevated pressure zone over the table 315 and the imaged subject 310 in a desired manner. As illustrated in Fig.

Abstract

L'invention porte sur un ensemble support pour un détecteur d'image pouvant fonctionner pour acquérir une image d'un sujet sur une table. L'ensemble support comprend un bras de décalage couplé de manière pivotante à partir d'un chariot autour d'un premier axe. Un coude est couplé de façon pivotante au bras de décalage autour d'un deuxième axe. Les premier et deuxième axes sont alignés verticalement et espacés d'une distance de décalage l'un de l'autre. Un bras mobile supporte le détecteur d'image. Le bras mobile est couplé de manière pivotante au coude autour d'un troisième axe qui est aligné horizontalement et en alignement avec un axe longitudinal central d'une table dans un plan vertical. Le bras mobile est également supporté pour tourner autour d'un quatrième axe qui est aligné horizontalement et en alignement perpendiculaire par rapport au troisième axe. Les premier, deuxième, troisième et quatrième axes comprennent tous un point commun d'intersection les uns avec les autres.
EP08731623A 2008-03-07 2008-03-07 Procédé et agencement pour un système d'imagerie mobile Withdrawn EP2252213A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2008/056156 WO2009110906A1 (fr) 2008-03-07 2008-03-07 Procédé et agencement pour un système d'imagerie mobile

Publications (1)

Publication Number Publication Date
EP2252213A1 true EP2252213A1 (fr) 2010-11-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08731623A Withdrawn EP2252213A1 (fr) 2008-03-07 2008-03-07 Procédé et agencement pour un système d'imagerie mobile

Country Status (4)

Country Link
EP (1) EP2252213A1 (fr)
JP (1) JP2011512986A (fr)
CN (1) CN102065767A (fr)
WO (1) WO2009110906A1 (fr)

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US9980688B2 (en) 2013-01-17 2018-05-29 Koninklijke Philips N.V. Ceiling suspension system
WO2014142244A1 (fr) * 2013-03-14 2014-09-18 株式会社 東芝 Dispositif de diagnostic radiographique
CN103462629B (zh) * 2013-09-04 2015-04-22 江苏美伦影像系统有限公司 车载dr探测器
CN206228357U (zh) 2016-06-03 2017-06-09 北京东软医疗设备有限公司 一种悬吊机架
CN108261203B (zh) * 2017-01-03 2023-06-16 通用电气公司 C形臂x射线成像设备及其底座
US10470728B2 (en) * 2017-03-21 2019-11-12 General Electric Company Orbital rotation positioning device for a C-arm of an imaging system
JP6968855B2 (ja) * 2017-11-13 2021-11-17 キヤノンメディカルシステムズ株式会社 Ｘ線診断装置
JP6608414B2 (ja) * 2017-11-13 2019-11-20 キヤノンメディカルシステムズ株式会社 Ｘ線診断装置及びアンギオｃｔ装置

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Also Published As

Publication number Publication date
JP2011512986A (ja) 2011-04-28
WO2009110906A1 (fr) 2009-09-11
CN102065767A (zh) 2011-05-18

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