Abstract: Mini C-arm apparatus for x-ray fluoroscopic imaging having a base or cabinet, an articulated arm assembly connected thereto, a support arm assembly carried by the articulated arm assembly, a C-arm slidably mounted in the support arm assembly, and an x-ray source assembly including an x-ray source and an image receptor assembly including an image receptor respectively mounted at opposed locations on the C-arm such that x-rays emitted by the x-ray source impinge on the image receptor, wherein one of the source and image receptor assemblies includes a control panel that permits activation of predefined functions of the x-ray fluoroscopic imaging apparatus.

Abstract: A medical device has a device component that is connected to a mount, which includes elements that can be moved relative to one another in a motorized fashion, and a control and computing unit which controls the motorized relative movements of the elements. A position identification arrangement is allocated to the control and computing unit which supplies signals to permit determination by the control and computing unit of lines in space with different directions, along which the device component can be moved in a motorized fashion, at least indirectly, by the mount.

Abstract: X-ray diagnostic apparatus has a beam transmitter and beam receiver mounted opposite one another on a curved holder. In a first operating mode, the curved holder is formed by at least a first circular ring segment on which the beam transmitter and the beam receiver are mounted. In a second operating mode, a second circular ring segment is coupled to the first circular ring segment so that a closed ring results. Displacement arrangements, as well as energy supply connections, are provided for the beam transmitter and the beam receiver, and a signal transmission arrangement for the beam receiver is provided, so that the beam transmitter and the beam receiver can be controlled, positioned opposite one another, so as to rotate around an examination subject. With this X-ray diagnostic apparatus, both transirradiation exposures and computed tomography exposures can be produced.

Abstract: A virtual C-arm support system 40 is used in a radiographic imaging apparatus of the type including an x-ray source 44 and an x-ray detector 48. The support system includes a first positioning system 42 operatively connected to the x-ray source for selectively positioning the x-ray source in a range of first orientations 120, 140, 170 relative to the examination region E. A second positioning system 46 is operatively connected to the x-ray detector 48 for selectively positioning the x-ray detector in a range of second orientations 122, 142, 172 relative to the examination region E. A control unit 60 is in operative command of at least one of the first and second positioning systems to maintain a predetermined spatial relationship between the x-ray source and the detector for each of the ranges of the first and second orientations relative to the examination region.

Abstract: A mobile device for an X-ray apparatus is formed of a freely rotatable hollow column disposed on a mobile base, a holding section for holding an X-ray tube in a vertical direction along the column, and a counter weight connected through a wire to the holding section to be suspended inside the column. A column rotating section formed of a bearing portion and a rotational shaft with a hollow part is disposed in the mobile base. A lower part of the counter weight is provided with a convex portion which enters into the hollow part of the rotational shaft. When the holding section for the X-ray tube is elevated to the highest point, the counter weight is lowered to the lowest point, wherein the convex portion of the counter weight enters into the hollow part of the rotational shaft. Thus, a volume of the hollow part can be utilized as a part of the volume of the counter weight to allow the counter weight to be made of iron and the like, other than lead.

Abstract: An X-ray positioning apparatus for a C-arm device that is "out of balance" in that a center of mass of the rotatable structure resides below an axis of lateral rotation of the C-arm. The positioning apparatus includes a conventional L-arm support for holding the C-arm thereon, wherein a torsional resistance device is disposed inside the L-arm. The torsional resistance device may be a gas spring, for example, pivotally attached at one end to a fixed location on a ground support such as a conventional base unit, and attached at an opposing end to the L-arm by a ball joint. The pivotal attachment of the gas spring resides below the axis of lateral rotation to thereby cause the gas spring to produce a torsional force about the axis of lateral rotation that is opposite in direction to torsional loads produced by force of gravity when the center of mass of the rotatable structure and the axis of lateral rotation are not in vertical alignment.

Abstract: An X-ray exposure system has a mobile X-ray apparatus with an X-ray source and an X-ray receiver that are adjustable relative to a subject for registering successive 2D projections of the subject from different projection directions, an arrangement disposed outside the beam path of the X-ray beam emanating from the X-ray source for directly determining the projection geometries of the X-ray source and of the X-ray receiver at the points in time of the individual 2D projections, and a computer supplied with signals from the arrangement for the direct determination of the projection geometries, which reconstructs 3D images of the subject from the 2D projections.

Abstract: A mobile motorized base, cart, or carriage apparatus for moving medical imaging equipment about a portion of a body of a patient. The apparatus includes a lower chassis and an upper chassis. The upper chassis can be moved in a selective and controlled manner between a retracted and extended position. The lower chassis has precision movement to mechanically guide and advance the medical imaging equipment about the patient. The movement is enabled by the use of separate drive motors and rotator motors for the drive wheels. An omni-directional third wheel is used to support the upper chassis relative to the floor.

Abstract: A medical apparatus has a carrying device for at least one component, wherein the carrying device is adjustable relative to a holding mechanism and is formed of plastic. Rollers at least partly formed of plastic are provided for the adjustment of the carrying device relative to the holding mechanism, the carrying device being seated on these rollers and these rollers running directly on a plastic surface of the carrying device.

Abstract: In a mini C-arm x-ray imaging system in which an x-ray source and detector are mounted at opposite ends of a C-shaped track which is supported for sliding orbital movement along its axis of curvature for positioning the source and detector in relation to an object to be imaged, a locking mechanism including a brake shoe bearing against the track, a screw and nut carried by the track-supporting structure for moving the shoe toward and away from the track, a resilient bias acting between the shoe and the screw to urge the shoe toward the track, a handle for turning the screw to move the shoe, and a detent acting between the handle and the support structure to provide a plurality of discrete settings for the handle, respectively representing incrementally different forces exerted by the shoe against the track.

Abstract: A portable x-ray bone densitometry system is suitable for transportation between rooms of a medical facility through generally standard doorways. The system has a base portion capable of rolling ambulation by at least one human operator during transportation and selective stabilization on a floor for patient scanning. The apparatus has a patient table extending parallel to a Y-axis of an XYZ coordinate system for supporting a patient at a patient position. The patient table includes a central portion coupled with the base portion, and at least one table leaf coupled with the table central portion, for extending table length parallel to the Y-axis.

Abstract: An x-ray examination device for checking the contents of closed cargo carriers having two steerable single-track carriages disposed parallel to each other, wherein the carriages each support a vertical column. The free ends of the columns are connected to each other by means of a yoke spanning the space between the carriages, which corresponds to the maximal possible width of the cargo containers. The yoke can be raised and lowered on the two columns. Cantilevers are aligned horizontally, and parallel relative to each other, and are arranged on the yoke. The free ends of the cantilevers support a cross bar. Connected to one end of the cross bar are supports for supporting the x-ray equipment. The x-ray equipment includes an x-ray emitter and an x-ray receiver. Moreover, one or more screen vehicles having leaded mesh screens for surrounding the cargo containers are provided to shield against harmful x-rays outside the cargo container area.

Abstract: A compact mobile x-ray C-arm system employs a cart supporting a video monitor on a top shelf and other imaging equipment on lower shelves opening from the front of the cart. The C-arm is supported by a pivot attached to the side of the cart below the platform allowing the C-arm to extend forward without obstructing the shelves or video monitor and yet providing for a balanced operation permitting a smaller footprint area of the cart. Use of the C-arm as a heat sink for the x-ray source and swiveling casters to allow an additional axis of rotation allow a more compact structure to be produced.

Abstract: A device for inspecting a cargo container such as a motor vehicle or freight pallet, with penetrating radiation. A source of penetrating radiation is mounted on a moveable bed, thereby allowing a beam of penetrating radiation to sweep the large container. At least one detector is also mounted on the bed, ether on the side of the source or on a boom, so that, as the beam is scanned across the container, the container and any contents of the container are characterized by transmitted or scattered radiation, or both.

Abstract: An X-ray examination apparatus has an X-ray diagnostic assembly with a carrier having an X-ray source and a beam receiver disposed at opposite ends of the carrier, and a first coupling part connected to the carrier, a mobile base unit containing a plurality of components for operating said X-ray diagnostic assembly and having a second coupling part, and at least one support for stationary mounting in an examination room, having a third coupling part. The first coupling part of the carrier can be optionally connected to the second coupling part, for producing a mobile diagnostic apparatus, or to the third coupling part for producing a stationary diagnostic apparatus. When the first and third coupling parts are engaged and the X-ray diagnostic assembly is used as a stationary apparatus, the mobile base unit can be moved to the side, so that it does not hinder access to the stationary apparatus, but the components contained in the base unit remain connected to the X-ray diagnostic assembly.

Abstract: A portable x-ray exposure apparatus carries all components required for the production of an x-ray exposure. Two articulated arms are provided at a carriage, one carrying an x-ray source and the other carrying a flat detector that is formed by a matrix of detector elements. Image signals from the detector are supplied to image electronics in the carriage. The x-ray image generated by the image electronics is reproduced on a monitor or is transmitted to image data networks. The flat detector can be inserted under the patient in the bed.

Abstract: An x-ray unit is provided which includes an x-ray device for producing x-rays. A base holds the x-ray device, which comprises an x-ray source for positioning over an area of concern, and a rotatable x-ray source support column for allowing movement of the x-ray source. The total rotational motion of the support column is greater than 360.degree. relative to the base. Mechanical end of rotation stops mechanically defining total rotational motion of the support column. The x-ray source is capable of clockwise and counterclockwise movement from a parked position.

Abstract: A device for inspecting a cargo container such as a motor vehicle or freight pallet, with penetrating radiation. A source of penetrating radiation is mounted on a moveable bed, thereby allowing a beam of penetrating radiation to sweep the large container. At least one detector is also mounted on the bed, ether on the side of the source or on a boom, so that, as the beam is scanned across the container, the container and any contents of the container are characterized by transmitted or scattered radiation, or both.

Abstract: An x-ray exposure apparatus is freely movable in space without a cable, and allows the electronic production of x-ray images at the bed of a patient. The apparatus includes a cart with an image receiver, such as an amorphous silicon-based solid state detector, to which an image memory on the cart is allocated. Power supply ensues by means of a rechargeable battery that is integrated into the cart.

Abstract: An X-ray examining system includes a mobile vehicle; and an X-ray examining apparatus for ascertaining contents of an object. The examining apparatus includes a supporting structure mounted on the mobile vehicle; and X-ray source for generating a fan-shaped X-ray and being carried by the vehicle; and an X-ray detector mounted on the supporting structure. The X-ray examining system is adapted to travel along the object to be examined while irradiating the object and detecting the X-rays after passage thereof through the object.

Abstract: A miniaturized C-arm and imaging apparatus for use with X-ray diagnostic equipment and the like. An X-ray imaging system is coupled to a C-arm, including an X-ray source and an image receptor mounted upon opposing locations, respectively on the C-arm. The image receptor includes a vacuum bottle type image intensifier. The image receptor is characterized by an absence of fiber optic device, and the image intensifier is characterized by an absence of micro channels therein. The C-arm is mass balanced about an axis of orbital rotation and is pivotally coupled to an articulating arm assembly supported upon a wheeled support base. The mass balance enables repositioning of the X-ray imaging system between an anterior-posterior view and an orthogonal lateral view with a single, orbital movement of the C-arm which also causes the views to define an imaging isocenter.

Abstract: A radiographic inspection apparatus for large containers, vehicles and structures having a movable frame which can straddle the container or object being inspected. The straddling frame has opposed parallel sides which carry a source of penetrating radiation and a detector array. The source or sources and detectors are moved along the length of a container while radiographic image data is being sequentially recorded. By summing or collecting the sequence of data over the length of a container as the straddling frame moves along, a full two-dimensional radiographic image of the container may be obtained. Radiographic images may be enhanced either by providing uniform motion for the straddling frame or by measuring non-uniform motion and compensating corresponding regions of the radiographic image.

Abstract: A C-arm apparatus. An X-ray imaging system is coupled to a C-arm, including an X-ray source and an image receptor mounted upon opposing locations, respectively on the C-arm. The C-arm is mass balanced about its axis of orbital rotation and is pivotally coupled to an articulating arm assembly supported upon a wheeled support base. The mass balance enables repositioning of the X-ray imaging system between an anterior-posterior view and an orthogonal lateral view with a single, orbital movement of the C-arm which also causes the views to define an imaging isocenter. The C-arm is preferably miniaturized to an approximate diameter of twenty-eight inches with a source-to-image distance of approximately fourteen inches.

Abstract: A portable X-ray apparatus comprising a cart carrying an X-ray generator unit and an image intensifier unit, both in a stowed transport position. One of said units is mounted on the distal end of a support arm pivotable mounted on the cart, the arm is moveable from a stowed first position to an operative open position to position the unit it is carrying to be in an open spaced alignment, whereby in the operative position on the two units are effectively on respective tips of a C-shaped configuration thereby allowing a patient to be positioned between the units to enable taking an X-ray of the patient.

Abstract: A C-arm apparatus. A C-shaped member is slidably supported in a suspended position by a support arm. The support arm is rotatable about an axis of lateral rotation and is slidably mounted to an outer circumference of the arc-shaped member at a point of attachment coinciding with the axis of lateral rotation. Since the support arm is attached to the C-shaped member in alignment with the axis of lateral rotation, the support arm does not introduce eccentric lateral moment-arm action during lateral rotation and thereby provides a more stabile, balanced support structure.

Abstract: A mobile medical X-ray apparatus has the entire weight of its X-ray source and X-ray detector as well as their supporting arm supported by a vertically movable support column on a mobile table. A lever and a member for supporting a normally compressed spring are attached to the table rotatably, and they are also connected to each other rotatably with respect to each other around a connector shaft such that the force of the spring tends to rotate the lever in the direction of causing the support column to move upward. The spring constant of the spring and the relative positions of the lever and the spring-supporting member are determined such that the support column can be moved manually upward or downward.

Abstract: An x-ray inspection machine particularly suited for use on an assembly line has a narrow footprint produced by mounting opposed x-ray tube and camera on independently movable stages locked together by way of a central computer rather than a physical member. The stages are aligned by using position sensors at home positions and a fiduciary mark on the part to be inspected. The independent motion of the stages permits a limited range of angled inspections to be obtained without additional angulation mechanisms.

Abstract: A portable X-ray imaging machine includes a X-ray source and a X-ray image receptor. The source and the receptor are movable simultaneously along a line parallel to a patient reclined on the top of an examination table. The X-ray machine is readily transportable between and fixedly secured in a plurality of rooms in a hospital or other medical facility.

Abstract: A mobile x-ray apparatus has a support stand for an x-ray radiator which is mounted together with a control panel to form a unit. This unit is connected to a wheeled carriage so as to be pivotable around a vertical axis as a unit. This results in approximately the same weight distribution being present regardless of the angle at which the x-ray radiator is pivoted with respect to the supporting stand.

Abstract: An undercarriage for heavy diagnostic equipment having a selectably engageable swivel mechanism activated by the movement of a cam to allow the undercarriage to be turned when desired and rolled in a straight line when necessary, a selectably engageable braking mechanism to prevent movement of the undercarriage when desired, but allowing the undercarriage to be moved quickly if needed, and a balance wheel assembly to prevent the undercarriage and equipment from becoming unstable when encountering obstacles, while allowing the undercarriage to be rolled up inclines. An aspect of the invention allows the swivel and braking mechanisms to be selectively engaged from the same point along the undercarriage, thereby providing superior control of the undercarriage and the equipment which it carries.

Abstract: An improved mobile X-ray unit has a counterweighted articulating X-ray tube support arm that allows positioning of an attached X-ray tube virtually without the need for moving a supporting carriage. The improved mobile X-ray unit also allows the X-ray tube to be locked to the supporting carriage during travel and the articulating X-ray arm includes several electro-magnetically actuated disk brakes capable of locking the articulating X-ray arm in a predetermined position. In the event that the carriage movement is required, the carriage may be moved by application of force on a force sensing handle engaged with the carriage by two strain gage assemblies. The strain gage assemblies provide signals to a motor drive control circuits which in turn propel two driven wheels in the direction and proportional to the force applied to the handle relative to the carriage.

Abstract: X-ray apparatus carrying an X-ray tube as a source and an image intensifier as a receptor on opposite ends of a two-limbed C-Arm has a horizontal support arm extending from a base to a vertical support arm for the C-arm. The vertical arm has a plurality of telescoping tubular sections which can be extended or contracted along a vertical axis to raise or lower the C-arm relative to the level of the base. The horizontal arm also extends telescopingly to increase the space between the base and C-arm to give free passage of medical personnel through the space, the base having a height sufficient to hold the horizontal arm above a moderately tall operator. The horizontal arm is pivoted on a vertical axis through the base to swing the C-arm, X-ray tube and image intensifier over a patient table in coordination with extension of the horizontal arm or rotation of the vertical arm sections to scan the X-ray tube and receptor over a large area of the patient table. All movements may be manual or motorized.

Abstract: An improved, portable X-ray tomography system is disclosed wherein lateral movement of the various tomography components relative to a stationary patient during a scanning procedure is precisely controlled by mechanical displacement means which, in turn, is coupled to electro-mechanical means for simultaneously measuring and monitoring the amount of the displacement.

Abstract: A portable, lightweight medical radiographic device having an articulated support is described. The device includes a base, an elongated supporting structure having multiple sections interconnected by adjustable joints, a mount for a radiological camera, and a support for a film cartridge. The camera mount includes a concave, motorized track; the film cartridge support is also concave and may also provide motorized film advancement. A selected human body part to be imaged may be placed between the camera mount and the film track. When the camera, motorized track, and film support are energized, coordinated movement of the camera relative to the film results in a panoramic image of the body part on the exposed film.

Abstract: An improved mobile X-ray unit has a counterweighted articulating X-ray tube support arm that allows positioning of an attached X-ray tube virtually without the need for moving a supporting carriage. The improved mobile X-ray unit also allows the X-ray tube to be locked to the supporting carriage during travel and the articulating X-ray arm includes several electro-magnetically actuated disk brakes capable of locking the articulating X-ray arm in a predetermined position. In the event that the carriage movement is required, the carriage may be moved by application of force on a force sensing handle engaged with the carriage by two strain gage assemblies. The strain gage assemblies provide signals to a motor drive control circuits which in turn propel two driven wheels in the direction and proportional to the force applied to the handle relative to the carriage.

Abstract: A mobile, radiographic unit which includes a wheel mounted base assembly. A roll bar assembly and at least one leg extension member are connected to the base. A vertical column is disposed on the base and a carriage assembly travels along the column length. Arm extension members extend outward from the carriage with a radiographic head being connected to the arm extensions by a disconnect assembly. Separate means are employed for maintaining the carriage assembly in a selected position relative to the column and maintaining the arm extension members in selected position relative to the carriage assembly.

Abstract: An apparatus having a support for supporting a subject on a surface and an imager for imaging the subject. The imager is movably coupled to a track to allow relative movement of the imager about the support. The track is located substantially along a plane which is substantially parallel to the surface of the support. The support may, in some embodiments, be rotatable from a horizontal to a vertical position for certain procedures. The track provides movement of the imager about at least three sides of the apparatus and, in some embodiments, is affixed to the floor. Further, the track is substantially aligned with a centerline of the support surface. This provides a firm support for the imaging means, but keeps the support structure at a position where it will not interfere with clinical operations.

Abstract: A mobile X-ray apparatus having a carriage driven in a direction in which forces are applied to a pair of right and left control bars operable without influencing each other. The right and left control bars are arranged symmetrically with respect to the direction of movement of the carriage. Each control bar is supported to be pivotable independently of the other in a substantially horizontal or vertical plane. A neutralizing mechanism is provided for maintaining each control bar in a neutral position when the control bar is free from an external force. Position detectors are disposed adjacent a forward position and a rearward position of each control bar, respectively, to detect displacement thereof. Each control bar has an equivalent capacitor structure having an electrostatic capacity variable when the operator grips the control bar. This structure provides a safety mechanism for allowing the carriage to move only when the operator grips the control bar.

Abstract: An X-ray apparatus includes a frame (1, 3, 5) which supports at least an X-ray source (7) and an X-ray detector (9) and is attached to a base (13) which is provided with wheels (19, 21) enabling displacement of the apparatus on an approximately horizontal floor surface. In order to prevent cables lying on the floor from colliding with the wheels (19, 21) during displacement, so that the wheels could be blocked, each of the wheels (19, 21) includes a cable deflector which consists of an approximately horizontally arranged collar (25) which is made of a rigid material and which encloses the wheel at a distance of less than 10 mm from the floor surface (39).

Abstract: A mobile, radiographic unit which includes a wheel mounted base assembly and a roll bar assembly connected to the base. A vertical column is disposed on the base and a carriage assembly travels along the column length. Arm extension members extend outward from the carriage with a radiographic head being connected to the arm extensions by a disconnect assembly. Separate means are employed for maintaining the carriage assembly in a selected position relative to the column and maintaining the arm extension members in selected position relative to the carriage assembly.

Abstract: A mobile radiology machine that meets anti-toppling standards is made by limiting the unfolding of the structure that holds the X-ray tube, so that this unfolding occurs as a function of the angle of orientation of this structure about a vertical axis of exploration. It is shown that, under these conditions, it is possible to obtain satisfactory operation from a mobile radiology machine that weighs less and can be moved, if necessary, without the use of motors.

Abstract: X-ray examination of objects, which may be very large objects such as aircraft, boat hulls or lengthy pipelines, is accomplished with an x-ray source having a moving x-ray origin point that is scanned in a raster pattern. At least one x-ray detector having a very small x-ray sensitive area is disposed behind or within the object and provides an output signal indicative of internal characteristics of an adjacent region of the object. The source and detector undergo relative travel at least in a lateral direction during the examination to provide a sequence of different x-ray views that may include views of successive regions of the object, views from different angles and stereo views. X-ray images are produced at one or more monitor screens by sweeping a point of light in a raster pattern corresponding to that of the x-ray source while modulating the intensity of the point of light in accordance with the output signal of the detector.

Abstract: An electromagnetic remote control exposure system including a receiver and transmitter for excitation of a mobile X-ray unit having a rotating anode X-ray tube and exposure mechanism. The transmitter of the remote control is adapted to transmit by a single switch, a first signal to initiate the rotation of the anode and a second signal for the initiation of the actual X-ray exposure. The receiver is provided with a time out delay which causes the X-ray unit to return to the standby mode if the second signal is not received within a predetermined interval of time after receipt of the first signal. The system will also return the X-ray unit to the standby mode if the second signal is interrupted before the exposure has been completed.

Abstract: An x-ray diagnostics apparatus for obtaining an x-ray exposure of a bedridden patient permits the exposure to be obtained without moving the patient from the bed. The patient bed has two patient bearing surfaces. The patient lies on the upper surface, and a lower surface is vertically adjustable beneath the upper surface. When the lower surface is lowered to permit the introduction of an x-ray cassette between the upper and lower surfaces, the upper surface is supported, such as by a fabric tentered to the bed frame. An optical system is provided for accurately positioning the x-ray film cassette, and a wireless transmission path for an automatic exposure unit may also be provided.

Abstract: An X-ray imaging apparatus has an X-ray imaging unit having an X-ray emitting source and an X-ray image recording member, and a rotatably supporting pedestal for rotatably supporting the X-ray imaging unit. A cam member is provided at one of the X-ray imaging unit and the rotatably supporting pedestal, a cam surface of which extends in the circumferential direction around the rotating center line of the X-ray imaging unit and an engaging recess is formed on the cam surface to be recessed inwardly in the radial direction relative to the rotating center line. The engaging mechanism is provided at the other of the X-ray imaging unit and the rotatably supporting pedestal to be in contact with the cam surface of the cam member and telescopically engaged with the engaging recess of the cam surface when the X-ray imaging unit is rotated.

Abstract: In a stowed configuration, a gantry (32) of a CT scanner is mounted by helical, wire rope shock isolators (78) to a floor (12) of an ISO shelter at about a 60.degree. angle relative to a central axis (48) of the shelter. Mechanical assemblies (84, 100) limit movement of a tiltable gantry portion (82) relative to fixed gantry portions (60, 62, 64). A CT scanner control console (36) is mounted adjacent an opposite end of the ISO shelter on shock isolators (140). A patient couch (34) is mounted on shock isolators (122) in a stowed configuration in the available space between the gantry and the console. To deploy the system, foldable walls (26, 30), a foldable ceiling panel (28), and a foldable floor panel (24) of the ISO shelter are folded out. The patient couch is lowered onto casters (124) and moved into alignment with a central axis of the gantry. Jacks (128, 130) lower the patient couch from the casters and shock isolators onto the floor of the ISO shelter for fixed engagement.

Abstract: An x-ray image-pickup apparatus comprises a base movable along a ceiling wall of a photographing room, a support having one end portion rotatably attached to the base, an arm rotatably and slidable attached to the other end portion of the support, and a pair of x-ray image-pickup systems arranged to be substantially included in an imaginary plane defined within the arm and designed to be capable of photographing a subject situated within the arm in two directions. The apparatus is suitable for a cephalo-cervical interventional angiography.

Abstract: An overhead X-ray apparatus for imaging in the bi-plane configuration which apparatus has the radiation isocenter vertically displaceable. A C-arm (or a like) for supporting an X-ray tube and image receptor is mounted on a carriage assembly in a rotatable arrangement about a vertical axes. The carriage assembly comprises a support frame and a slideable support mounted on overhead rails coupled by a scissor mechanism. A distance between the support frame and the slideable support and, hence the vertical position of the radiation isocenter can be varied by action of chains or timing belts connecting the support frame with the anchoring member which moves along the slideable support while actuated by an actuator.

Abstract: A mobile x-ray apparatus has an x-ray tube secured to a carriage via an arm mechanism, whereby the x-ray tube is adjustable both vertically and horizontally, and is provided with wheels for movement along a floor, and having a support which may be lowered to a floor to support the x-ray apparatus. Such a support, in its lowered position, supports the x-ray apparatus such that the x-ray apparatus is rotatable about the support, thereby improving the ease with which the x-ray tube may be positioned.

Abstract: An improved, portable X-ray tomography system is disclosed wherein lateral movement of the various tomography components relative to a stationary patient during a scanning procedure is precisely controlled by mechanical displacement means which, in tarn, is coupled to electro-mechanical means for simultaneously measuring and monitoring the amount of the displacement.