US2916627A - Tomograph - Google Patents

Tomograph Download PDF

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Publication number
US2916627A
US2916627A US739614A US73961458A US2916627A US 2916627 A US2916627 A US 2916627A US 739614 A US739614 A US 739614A US 73961458 A US73961458 A US 73961458A US 2916627 A US2916627 A US 2916627A
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contact
circuit
switch
closed
winding
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Expired - Lifetime
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US739614A
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Rolke Helmut
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US Philips Corp
North American Philips Co Inc
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US Philips Corp
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Priority claimed from DEM34486A external-priority patent/DE1044350B/en
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    • 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
    • A61B6/447—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 counterpoise or springs
    • 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

Definitions

  • the present invention relates to X-ray apparatus for making radiographs of body sections.
  • X-ray apparatus for making radiographs of body sections the X-ray source and the X-ray sensitive surface or image carrier during the exposure are swung so that X-rays passing through any point of the body section, an
  • the X-ray sensitive surface is kept parallel to the body section, for example, by means of guides.
  • the tube voltage is switched on. This voltage is switched on and off by the system comprising the tube and the image carrier operating suitable switch contacts the positions of which can be adapted to the angular displacement chosen.
  • a switching circuit arrangement for X-ray apparatus including an X-ray tube, means for moving said X-ray tube in a predetermined motion, an actuating circuit for contro'ling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normally open and adapted to be closed by said winding in its energized condition, and a second armature contact connected in said current controlling circuit, said second contact being normally open is actuated which through a relay by means of a contact selects the circuit for the swinging movement. By means of a second contact the relay selects the tube current required for the tomographic exposure.
  • the relay circuit is broken by another contact which is operated when the swinging movement is finished.
  • reference numeral 8 designates a patient couch.
  • an X-ray tube 9 and an X-ray sensitive surface or image carrier 10 are pivotally moved about an axis 11 which lies in the plane of the body section, an image of which is to be produced.
  • Theapparatus can also be used as a Bucky-couch for making normal radiographs, in which event the tube 9 is locked at any suitable point between the positions 9 and 9a shown in the drawing.
  • an energizing circuit for said winding a first switch connected in said energizing circuit, said first switch being normally open and adapted to be closed by contact with said moving means, and a second switch connected in said energizing circuit in spaced relation from said first switch, said second switch being normally closed and adapted to be opened by contact with said moving means.
  • a switching circuit arrangement for X-ray apparatus including an X-ray tube, means for moving said X-ray tube in a predetermined substantially arcuate motion, an actuating circuit for controlling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normally open and adapted to be closed by said winding in its energized condition, and a second armature contact connected in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition, and a second armature contact connected in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition, an energizing circuit for said winding, a first switch connected in said energizing circuit and positioned in operative proximity to the leading edge of the path of arcuate motion of said X-ray tube, said first switch being normally open
  • a switching circuit arrangement for X-ray apparatus including an X-ray -tube, means for moving said X-ray tube in a predetermined substantial y arcuate motion, an actuating circuit for controlling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normally open and adapted to be closed by said winding in its energized condition, a second armature cont-act connected in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition and a third armature contact, an energizing circuit for said winding, 21 first switch connected in said energizing circuit and positioned in operative proximity to the leading edge of the path of arcuate motion of said X-ray tube, said first switch being normally open and adapted to be closed by contact with said moving means at substantially said leading edge, a connection in said ener
  • a switching circuit arrangement for X-ray apparatus including an X-ray tube, means for moving said X-ray tube in a predetermined motion, an actuating circuit for controlling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normal y open and adapted to be closed by said winding in its energized condition, a second armature contact connected in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition and a third armature contact, an energizing circuit for said winding, a first switch connected in said energizing circuit, said first switch being normally open and adapted to be closed by contact with said moving means, a connection in said energizing circuit bypassing said first switch, said third contact being connected in said bypass connection and being normally open and adapted to be closed by said winding in its energized condition

Description

Dec. 8, 1959' H, ROLKE 2,916,627
- TOHOGRAPH Filed June 3, 1958 INVENTOR mum n61.
av I
AGENT TOMOGRAPH Hamburg-Fuhlsbuttel, Germany, assignor Helmnt Riilke, N k
p to North American Philips Company, Inc.,
N.Y., a corporation of Delaware Application June s, 1958, Serial No; 739,614 6 Claims. 01. 250-93 The present invention relates to X-ray apparatus for making radiographs of body sections.
In X-ray apparatus for making radiographs of body sections the X-ray source and the X-ray sensitive surface or image carrier during the exposure are swung so that X-rays passing through any point of the body section, an
image of which is to be produced, always impinge at the same point of the image carrier. During its movement, the X-ray sensitive surface is kept parallel to the body section, for example, by means of guides. During the movement the tube voltage is switched on. This voltage is switched on and off by the system comprising the tube and the image carrier operating suitable switch contacts the positions of which can be adapted to the angular displacement chosen.
The present invention relates to an improvement in such apparatus and has for its purpose to automatize the adjustments which must be made at the switch board of the X-ray apparatus before the system comprising the tube and the image carrier starts to move. These adjustments comprise the selection of the circuit for the cuit and the contact is connected in the tube circuit. The contact 3 causes the relay circuit to remain closed during the swinging movement. When the final position 9a, shown in dotted lines, is reached, a contact 6 is opened so that the relay circuit is opened. By means of a pushbutton 7, or the like, the relay circuit can be kept open when no radiograph is made. Thusthe invention enables the apparatus selector to be operated and the tube current required for making the layer radiograph to be adjusted automatically by the tomograph.
While the invention has been described by means of a specific example and in a specific embodiment, I do not wish to be limited thereto, for obvious modifications will occur to those skilled in the art without departing from the spirit and scope of the invention.
What is claimed is:
. l. A switching circuit arrangement for X-ray apparatus including an X-ray tube, means for moving said X-ray tube in a predetermined motion, an actuating circuit for contro'ling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normally open and adapted to be closed by said winding in its energized condition, and a second armature contact connected in said current controlling circuit, said second contact being normally open is actuated which through a relay by means of a contact selects the circuit for the swinging movement. By means of a second contact the relay selects the tube current required for the tomographic exposure. The relay circuit is broken by another contact which is operated when the swinging movement is finished.
If the X-ray apparatus is not used for tomography the relay circuit can be interrupted by means of a pushbutton or the like.
In order that the invention may readily be carried into effect, it will now be described more fully with reference to the accompanying drawing, wherein the single figure is a schematic diagram of an embodiment of the arrangement of the present invention.
In the figure, reference numeral 8 designates a patient couch. For making tomographic exposures of body sections, an X-ray tube 9 and an X-ray sensitive surface or image carrier 10 are pivotally moved about an axis 11 which lies in the plane of the body section, an image of which is to be produced. Theapparatus can also be used as a Bucky-couch for making normal radiographs, in which event the tube 9 is locked at any suitable point between the positions 9 and 9a shown in the drawing.
Before a body section radiograph is made, the system comprising the tube 9 and the image carrier 10 must be placed by hand or by means of electric equipment in the starting position shown in the figure for the swinging movement. Then a contact 1, which was open, is closed, so that a relay 2 is energized and closes contacts 3, 4 and 5. The contact 4 is connected in the apparatus cir:
and adapted to be closed by said winding in its energized condition, an energizing circuit for said winding, a first switch connected in said energizing circuit, said first switch being normally open and adapted to be closed by contact with said moving means, and a second switch connected in said energizing circuit in spaced relation from said first switch, said second switch being normally closed and adapted to be opened by contact with said moving means.
2. A switching circuit arrangement for X-ray apparatus including an X-ray tube, means for moving said X-ray tube in a predetermined substantially arcuate motion, an actuating circuit for controlling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normally open and adapted to be closed by said winding in its energized condition, and a second armature contact connected in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition, and a second armature contact connected in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition, an energizing circuit for said winding, a first switch connected in said energizing circuit and positioned in operative proximity to the leading edge of the path of arcuate motion of said X-ray tube, said first switch being normally open and adapted to be closed by contact with said moving means at substantially said leading edge, and a second switch connected in said energizing circuit and positioned in operative proximity to the trailing edge of the path of arcuate motion of said X-ray tube in spaced relation from said first switch, said second switch being normally closed and adapted to be opened by contact with said moving means at substantially said trailing edge.
3. A switching circuit arrangement for X-ray apparatus including an X-ray tube, means for moving said X-ray tube in a predetermined motion, an actuating circuit for controlling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normally open and adapted to be closed by said winding in its energized condition, a second armature contact connected 'in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition and a third armature contact, an energizing circuit for said winding, a first switch connected in said energizing circuit, said first switch being normally open and adapted to be closed by contact with said moving means, a connection in said energizing circuit bypassing said first switch, said third contact being connected in said bypass connection and being normally open and adapted to be closed by said winding in its energized condition, and a second switch connected in said energizing circuit in spaced relation from said first switch, said second switch being normally closed and adapted to be opened by contact with said moving means.
4. A switching circuit arrangement for X-ray apparatus including an X-ray -tube, means for moving said X-ray tube in a predetermined substantial y arcuate motion, an actuating circuit for controlling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normally open and adapted to be closed by said winding in its energized condition, a second armature cont-act connected in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition and a third armature contact, an energizing circuit for said winding, 21 first switch connected in said energizing circuit and positioned in operative proximity to the leading edge of the path of arcuate motion of said X-ray tube, said first switch being normally open and adapted to be closed by contact with said moving means at substantially said leading edge, a connection in said energizing circuit bypassing said first switch, said third contact being connected in said bypass connection and being normally open and adapted to be closed by said winding in its energized condition, and a second switch connected in said energizing circuit and positioned in operative proximity to the trailing edge of the path of arcuate motion of said X-ray tube in spaced relation from said first switch, said second switch being normally closed and adapted to be opened by contact with said moving means at substantially said trailing edge.
5. A switching circuit arrangement for X-ray apparatus including an X-ray tube, means for moving said X-ray tube in a predetermined motion, an actuating circuit for controlling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normal y open and adapted to be closed by said winding in its energized condition, a second armature contact connected in said current controlling circuit, said second contact being normally open and adapted to be closed by said winding in its energized condition and a third armature contact, an energizing circuit for said winding, a first switch connected in said energizing circuit, said first switch being normally open and adapted to be closed by contact with said moving means, a connection in said energizing circuit bypassing said first switch, said third contact being connected in said bypass connection and being normally open and adapted to be closed by said winding in its energized condition, a second switch connected in said energizing circuit in spaced relation from said first switch, said second switch being normally closed and adapted to be opened by contact with said moving means, and a manually operated switch connected in said bypass connection.
6. A switching circuit arrangement for X-ray apparatus including an X-ray tube, means for moving said X-ray tube in a predetermined substantially arcuate motion, an actuating circuit for controlling said moving means and a circuit for controlling the magnitude of the current in said X-ray tube, comprising a relay having an energizing winding, a first armature contact connected in said actuating circuit, said first contact being normally open and adapted to be closed by said winding in its energized condition, a second armature contact connected in said current controlling circuit, said second contact being normally open and adapted 'to be closed by said winding in its energized condition and a third armature contact, an energizing circuit for said winding, a first switch connected in said energizing circuit and positioned in operative proximity to the leading edge of the path of arcuate motion of said X-ray tube, said first switch being normally open and adapted to be closed by contact with said moving means at substantially said leading edge, a connection in said energizing circuit bypassing said first switch, said third contact being connected in said bypass connection and being normally open and adapted to be closed by said winding in its energized condition, a second switch connected in said energizing circuit and positioned in operative proximity to the trailing edge of the path of arcuate motion of said X-ray tube in spaced relation from said first switch, said second switch being normally closed and adapted to be opened by contact with said moving means at substantially said trailing edge, and a manually operated switch connected in said bypass connection.
References Cited in the file of this patent UNITED STATES PATENTS 2,000,497 Pohl May 7, 1935 2,640,159 Gerneth May 26, 1 953 2,781,454 Green et a1 Feb. 12, 1957 2,798,958 Hudson et al. July 9, 1957 Attes ting" Officer UNITED STATES PATENT OFFICE I CERTIFICATE 0F CDRRECTION PatentNo. 2,916,627
- December 8, 1959 Y He'mut Rlke It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as oor rented below,
In the: heading to the pfinte'd specification, between lines 6 and '7)- insert Claims priority, application Germany June 15, 1957 Signed and sealed this L4th day of June 1960-,
- I (SEAL) Attest:
AXLINE ROBERT c. WATSON Commissioner of Patents
US739614A 1957-06-15 1958-06-03 Tomograph Expired - Lifetime US2916627A (en)

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Application Number Priority Date Filing Date Title
DEM34486A DE1044350B (en) 1957-06-15 1957-06-15 Circuit arrangement for X-ray devices for the representation of body layers
US739614A US2916627A (en) 1957-06-15 1958-06-03 Tomograph

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546462A (en) * 1967-10-20 1970-12-08 Radiologie Cie Gle Security cut-off device for x-ray tomography apparatus
US3790799A (en) * 1972-06-21 1974-02-05 American Science & Eng Inc Radiant energy imaging with rocking scanning
US3809886A (en) * 1971-11-26 1974-05-07 Cfc Products Dynamic tomography with movable table
US3908126A (en) * 1974-01-02 1975-09-23 Pennwalt Corp S S White Dental X-ray apparatus for providing panoramic radiographic projections
US3963932A (en) * 1973-07-20 1976-06-15 Tokyo Shibaura Electric Co., Ltd. X-ray tomography apparatus
US4005311A (en) * 1974-02-15 1977-01-25 Georgetown University Diagnostic X-ray systems

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2000497A (en) * 1927-11-29 1935-05-07 Pohl Ernst Method of and apparatus for making rontgen projections
US2640159A (en) * 1948-11-26 1953-05-26 Siemens Reiniger Werke Machine for convergent irradiation
US2781454A (en) * 1952-12-04 1957-02-12 Ca Atomic Energy Ltd Rotational therapy unit
US2798958A (en) * 1956-01-19 1957-07-09 Donald C Hudson Apparatus for producing radiographs of selected structures within a subject

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2000497A (en) * 1927-11-29 1935-05-07 Pohl Ernst Method of and apparatus for making rontgen projections
US2640159A (en) * 1948-11-26 1953-05-26 Siemens Reiniger Werke Machine for convergent irradiation
US2781454A (en) * 1952-12-04 1957-02-12 Ca Atomic Energy Ltd Rotational therapy unit
US2798958A (en) * 1956-01-19 1957-07-09 Donald C Hudson Apparatus for producing radiographs of selected structures within a subject

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546462A (en) * 1967-10-20 1970-12-08 Radiologie Cie Gle Security cut-off device for x-ray tomography apparatus
US3809886A (en) * 1971-11-26 1974-05-07 Cfc Products Dynamic tomography with movable table
US3790799A (en) * 1972-06-21 1974-02-05 American Science & Eng Inc Radiant energy imaging with rocking scanning
US3963932A (en) * 1973-07-20 1976-06-15 Tokyo Shibaura Electric Co., Ltd. X-ray tomography apparatus
US3908126A (en) * 1974-01-02 1975-09-23 Pennwalt Corp S S White Dental X-ray apparatus for providing panoramic radiographic projections
US4005311A (en) * 1974-02-15 1977-01-25 Georgetown University Diagnostic X-ray systems

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