Abstract: An imaging system (100) includes a rotating frame (106), a second frame (102, 104), and a support (108) that rotatably couples the rotating frame (106) to the second frame (102, 104). One of the rotating frame (106) or the second frame (102, 104) is compliantly coupled to the support (108) and the other of the rotating frame (106) or the second frame (102, 104) is rigidly coupled to the support (108). An imaging system includes a rotating frame (106), a tilt frame (104), and a stationary frame (102). A frame stiffener (110) provides structural support for the rotating and tilt frames (106, 104) along transverse axes. An imaging system (100) includes a rotating frame (106) and a second frame (102, 104) that rotatably supports the rotating frame (106). The rotating frame (106) is coupled to the second frame (102, 104) through a contactless bearing and controlled by a contactless mechanism. A braking component (112) selectively applies a brake to the rotating frame (106).

Abstract: Methods and systems for inspecting objects are disclosed. A portable X-ray backscatter imaging system includes a microfocus X-ray tube to emit X-rays at an object under inspection. A track system rasters the microfocus X-ray tube to inspect the object. A portable hood may enclose the microfocus X-ray tube and the track system against the object A rotation mechanism rotates the microfocus X-ray tube to angle the emitted X-rays at the object. A plurality of solid state detectors receive scattered X-rays to generate an image of the object.

Abstract: A rotor for a gantry of a computed tomography apparatus, as well as a manufacturing method for such a rotor. The rotor according to the invention is produced at least in segments from a composite material with polymer matrix that is reinforced with fibers. The rotor thus has a high strength and rigidity, such that the deformation limits to achieve a sufficiently good image quality with simultaneously low structural volume and low weight are not exceeded, even at high rotation speeds.

Abstract: The X-ray fluoroscopic apparatus of this invention includes a slide arm for supporting an X-ray tube, a middle slider for holding the support arm to be movable in directions along an irradiation axis of the X-ray source, and a strut for holding the middle slider to be movable the directions along the irradiation axis. Thus, compared with an amount of stroke of the X-ray tube, an amount of movement of each of the middle slider and the support arm can be small, and each of the strut, middle slider and support arm can be shortened to reduce apparatus height. Therefore, the amount of stroke of the X-ray source can be secured appropriately, while inhibiting an increase in installation space.

Abstract: A method of fabricating a portable x-ray detector includes coupling a gravity sensor to the portable x-ray detector and coupling a processor to the gravity sensor. The processor is programmed to receive an input from the gravity sensor, determine a physical orientation of the portable x-ray detector based on the received input, and generate ah indication to reposition the portable x-ray detector. A portable detector and an imaging system including the portable detector are also provided.

Abstract: Provided are a table type digital X-ray detector, which is capable of implementation within a digital X-ray photographing apparatus through easy installation without replacing an existing X-ray photographing apparatus, a housing for the table type digital X-ray detector, and an X-ray photographing apparatus using the table type digital X-ray detector. The X-ray photographing apparatus may include: an X-ray source; a support provided at a position facing the X-ray source; a housing configured to be fixedly attachable to the support, at least a portion of the top surface of the housing being made of an X-ray transmittable material; and a digital X-ray sensing module embedded in the housing.

Abstract: A panoramic X-ray apparatus, comprising at least a support element (2), a patient support (9) arranged to be movable in a vertical direction and an imaging station (4a). The panoramic X-ray apparatus has a support structure (4) arranged to support at least the imaging station (4a), and it has an actuator (15) producing a vertical linear motion for moving at least the imaging station (4a) to different height positions. The panoramic X-ray apparatus comprises a transmission mechanism (28) which affects the velocity/travel distance of the vertical movement of the imaging station (4a) and which is connected at least to the actuator (15) and either to the aforesaid support structure (4) or to the aforesaid support element in such manner that the velocity/travel distance of the vertical movement of the imaging station (4a) is substantially greater than the velocity/travel distance of the motion imparted by the actuator (15) to the transmission mechanism (28).

Abstract: An air bearing has a rotor having a circularly curved radial rotor bearing surface along its circumferential direction. The air bearing also has a stator having at least one radial stator bearing surface partially enclosing the rotor in the circumferential direction. The radial stator bearing surface is curved according to a profile following the circumferential direction of the rotor and is fashioned to generate an air gap between it and the radial rotor bearing surface so that, upon operation, the rotor is borne, supported by an air current in the air gap. The profile shapes the air gap such that, at a starting temperature that deviates from an operating temperature, the air gap has a smaller thickness (measured in the radial direction) in a second region of the radial stator bearing surface in comparison to a first region of the radial stator bearing surface along the circumferential direction.

Abstract: An imaging apparatus having a ring-shaped gantry is provided. The gantry has a rotor arrangement rotating therein and a radiation source as well as at least one radiation detector. The gantry has at least one gantry segment which can be detached from the ring shape to allow the gantry to be opened laterally. The gantry is arranged on a supporting structure so as to be movable in space. The supporting structure is a ceiling-mounted stand having at least two degrees of freedom of movement. The gantry has at least two radiation sources disposed offset by an angle on the rotor arrangement and associated with each of which is at least one radiation detector.

Abstract: An X-ray fluoroscope table and an X-ray fluoroscope system using this fluoroscope table with simple structure and easily ensuring an area where a person stands near the top board. An X-ray fluoroscope table (1) comprises a stand unit (10), a support arm unit (20), a support frame (30), a top board (40), an X-ray generator (60), a column unit (50), and an X-ray detector (FPD 70). The end of the column unit (50) on the support frame side (30) and the end on the X-ray generator (60) side are displaced from each other in the length direction of the support frame (30). With this constitution, the area where an operator (OP3) stands can be ensured near the column unit (50). An X-ray fluoroscope system is constituted of this fluoroscope table (1), a high-voltage generator for supplying electric power to the fluoroscope table (1), and a remote control console for integrally controlling them.

Abstract: A stand for an X-ray examination apparatus like a C-arm (4) is proposed. The stand comprises a movable ceiling support assembly for a ceiling of a room, a ground support assembly for a floor of the room and a holder (16) extending from the ceiling support assembly to the ground support assembly. The ceiling support assembly is distanced laterally from the ground support assembly and the holder comprises a mount (30) for holding the X-ray examination apparatus above the ground support assembly. Provision of a holder between a ground support assembly and a ceiling support assembly allows to position the ceiling-rail at a distance to a patient's area where the C-arm is employed. Therefore, no dust and debris from a ceiling-rail is released over the patient's area and a sterile air flow from a ceiling is not disturbed. By pivoting the stand through a pivot bearing (14) the C-arm can be easily brought into a parking position where it does not obstruct the patient's area.

Abstract: Current C-arm examination devices are not capable of performing 360 degrees rotations. The reason for this is that the cabling which connects the external cabinets to the detector, collimator and x-ray tube does not allow for such a rotation. According to an exemplary embodiment of the present invention, an examination apparatus is provided which has a connection device connecting the external cabinets to the C-arm which is adapted for enabling a rotation of the C-arm of more than 360 degrees. Such a connection device may comprise a storing device for winding up the cable.

Abstract: An imaging system includes a portable litter including a structural housing and a digital detector positioned in the structural housing to detect X-ray signals corresponding to a region of interest to be imaged. The imaging system further includes at least one X-ray source for generating the X-ray signals, the at least one X-ray source positioned above the portable litter on an open gantry arrangement and configured to generate X-rays from different focal spot locations.

Abstract: A lift apparatus for supporting a C-arm or a U-arm of an X-ray machine is provided. The lift apparatus includes an outer shell and an inner shell disposed within the outer shell and configured to slide upward and downward within the outer shell. The C-arm or U-arm is connected to the inner shell. A gas spring is disposed within the inner shell. A first end of the gas spring is connected to a top of the inner shell, and a second end of the gas spring is connected to a bottom of the outer shell through a bottom of the inner shell. Upward and downward movement of the inner shell is driven by expansion and compression of the gas spring.

Abstract: The c-arm x-ray system according to the present invention presents a system that provides at least one x-ray beam projection and an auxiliary projection without the need to rearranging or move elements of the c-arm to avoid inaccuracies through mechanical deflection of the supporting c-arm. This is achieved by comprising a main x-ray source, and at least one auxiliary x-ray source with a lower continuously radiated power than the main x-ray source and mechanically coupled to the main x-ray source, which is formed as a cold carbon nanotube based field emitter.

Abstract: A movement system for a C-arm. The movement system comprises at least one first guide element arranged in a plane, a movement device arranged to allow movement along the first guide element as well as a first motion link rotatable around a first axis of rotation standing at right angles to the plane. The movement device is connected rotatably to the first motion link to a second axis of rotation standing at right angles to the plane such that a movement of the movement device along the first guide element causes the second axis of rotation to be moved on a circular track around the first axis of rotation. The advantage of this is that the arm is prevented from jamming as a result of leverages during movement of a C-arm.

Abstract: Fins are arranged on the rotating side of an X-ray computed tomography apparatus. The fins are rotated to generate airflow as the rotating side is rotated. This airflow serves to discharge wear debris to the outside of the X-ray CT apparatus, thereby preventing the wear debris from scattering toward an X-ray tube and support bearing. In consequence, in the X-ray CT apparatus provided with a slip ring, the wear debris produced in a contact space between the slip ring and a brush can be prevented from being scattered in the apparatus.

Abstract: An apparatus and method of examining the breast of a woman who has difficulty in standing or raising her arms by providing an X-ray machine having x-ray emitting and receiving members that are rotatable about a vertical axis and movable up and down along the vertical axis. A cup member having an interior configured to receive one of the woman's breast is placed over a breast and suction from a source of suction is applied to the interior of the cup member to expand the breast to fill the cup. The X-ray emitting and receiving members of the X-ray machine are then oriented relative to the cup member to perform an examination of the breast inside the cup member while the woman is either in a sitting or standing position.

Abstract: The invention relates to a device for guiding at least one cable between a first system component connected to the cable and a second system component which is relatively rotatable and/or displaceable with respect to the first and is connected to the cable, whereby the cable exhibits a cable modality which can be changed by displacement and/or rotation of the second system component, whereby at least one device for adapting the cable modality is present. By making available a guide medium which allows the device for adapting the cable modality to be guided according to the displacement and/or rotation of the second system component, it is possible to provide a device which supports a mobile device without the function of the device being restricted by the cable guide.

Abstract: An imaging system includes a stationary frame (104) and a pivotable frame (106) that is pivotably attached to the stationary frame (104) and configured to pivot about a transverse axis (108). A rotating frame (110) is rotatably supported by the pivotable portion (106) and configured to rotate about a longitudinal axis (114) around an examination region (112) and a rotating frame balancer (118) selectively introduces a rotating frame mass imbalance. A radiation source (116) is affixed to the rotating frame (110) and emits radiation from a focal spot, wherein the radiation traverses the examination region (112). A detector array (128) detects the radiation that traverses the examination region (112) and generates a signal indicative thereof.

Abstract: An x-ray scanning imaging apparatus with a rotatably fixed generally O-shaped gantry ring, which is connected on one end of the ring to support structure, such as a mobile cart, ceiling, floor, wall, or patient table, in a cantilevered fashion. The circular gantry housing remains rotatably fixed and carries an x-ray image-scanning device that can be rotated inside the gantry around the object being imaged either continuously or in a step-wise fashion. The ring can be connected rigidly to the support, or can be connected to the support via a ring positioning unit that is able to translate or tilt the gantry relative to the support on one or more axes. Multiple other embodiments exist in which the gantry housing is connected on one end only to the floor, wall, or ceiling. The x-ray device is particularly useful for two-dimensional multi-planar x-ray imaging and/or three-dimensional computed tomography (CT) imaging applications.

Abstract: A computed tomography apparatus according to the invention ha a rotor that is produced at least in segments from a composite material with metal matrix reinforced with particles. Composite materials with a polymer matrix reinforced with particles have high specific strength properties and rigidity properties with simultaneously low material usage, such that high rotation speeds of the rotor can be achieved without negatively affecting the image quality in generated tomographical images.

Abstract: Disclosed herein is a panoramic X-ray photographing apparatus and a method for photographing using the same. The present invention relates to the panoramic X-ray photographing apparatus capable of conducting a panoramic photographing without generating X-ray in neck cervical vertebrae part employing a rotary arm driven in 3-axis direction. In case of scanning the neck cervical vertebrae part, a photographing can be conduct without X-ray. As a result, it is possible to prevent an image acquired by the neck cervical vertebrae part from being unclear. Also, an angle of incidence of X-ray at a photographing point can be controlled to be vertical, so that an image distortion phenomenon can be prevented. Furthermore, tempromandibular joint can be photographed at optimum enlargement ratio, thereby acquiring clear image.

Abstract: The X-ray fluoroscopic apparatus of this invention includes a slide arm for supporting an X-ray tube, a middle slider for holding the support arm to be movable in directions along an irradiation axis of the X-ray source, and a strut for holding the middle slider to be movable the directions along the irradiation axis. Thus, compared with an amount of stroke of the X-ray tube, an amount of movement of each of the middle slider and the support arm can be small, and each of the strut, middle slider and support arm can be shortened to reduce apparatus height. Therefore, the amount of stroke of the X-ray source can be secured appropriately, while inhibiting an increase in installation space.

Abstract: An x-ray system is provided. The x-ray system includes an x-ray emitter which can be adjusted by at least one arm as a first x-ray component and a recording system which can be adjusted independently of the at least one arm. The recording system may be adjusted by at least one additional arm as the further x-ray component. The two arms can be pivotably mounted about a common axis of rotation.

Abstract: The present specification discloses a readily relocatable X-ray imaging system for inspecting the contents of vehicles and containers, and a method for using the same. The system is relatively small in size, and is used for inspecting commercial vehicles, cargo containers, and other large objects. The X-ray imaging system has a substantially arch-shaped collapsible frame with an X-ray source and detectors disposed thereon. The frame is preferably collapsible via a plurality of hinges and may be deployed into an X-ray imaging position, and collapsed into a transport position.

Abstract: An X-ray imaging apparatus includes a multi X-ray source which includes a plurality of X-ray focuses to generate X-rays by irradiating X-ray targets with electron beams, a detector which detects X-rays which have been emitted from the multi X-ray source and have reached a detection surface, and a moving mechanism for moving the multi X-ray source within a plane facing the detection surface. The X-ray imaging apparatus acquires a plurality of X-ray detection signals from the detector by causing the multi X-ray source to perform X-ray irradiation while shifting the positions of a plurality of X-ray focuses which the detector has relative to the detection surface by moving the multi X-ray source using the moving mechanism. The apparatus then generates an X-ray projection image based on the plurality of X-ray detection signals acquired by the detector.

Abstract: A radiation system includes a first radiation source and a first detector positioned opposite to each other configured to image a body portion, and a second radiation source and a second detector positioned opposite to each other configured to image a region of interest in the body portion. The first radiation source has a first spot size and the first detector has a first pixel size. The second radiation source has a second spot size and the second detector has a second pixel size. The first spot size of the first radiation source may be different from the second spot size of the second radiation source, and/or the first pixel size of the first detector may be different from the second pixel size of the second detector.

Abstract: An X-ray device for creating 3D X-ray images includes a ceiling mount and an X-ray source emitting X-rays. The X-ray source is disposed on the ceiling mount. The X-ray device also includes a first X-ray detector that is connected to the X-ray source via a support bracket. The X-ray source is operable to be moved around an object under examination. The first X-ray detector is operable to be hinged out of a beam path of the X-rays. This provides a greater flexibility in the creation of 3D construction images, in that the X-ray device is not restricted to just one X-ray detector.

Abstract: A medical examination device is provided. At least some of the supply lines used to operate the examination device are routed from above to the examination device, with the supply lines being arranged on a gallows which is mounted rotatably on a rail-guided carriage and being attached to a longitudinal section by at least one Bowden cable arranged on the gallows.

Abstract: An actual-past-radiography position database stores, as actual-past-radiography positions, the position of a radiographic image detector and the position of a radiation source when radiography was actually performed, associating the position of the radiographic image detector and the position of the radiation source with information about a subject. When the radiation source and the radiographic image detector are positioned to perform radiography, position adjustment amounts for adjusting the positions of the radiation source and the radiographic image detector from standard positions stored in the standard position database are output, as aid information. The aid information is output based on the actual-past-radiography positions that are stored in the actual-past-radiography position database and that are associated with the information about the subject.

Abstract: An x-ray laminography device includes at least one x-ray detector and at least one x-ray source coupled in coordinated traversal with the at least one x-ray detector. The at least one x-ray source is configured to generate and transmit x-rays. The at least one x-ray detector and the at least one x-ray source traverse an at least partially radial travel path in unison about an object such that the object is illuminated with x-rays from a plurality of oblique radial angles defined between the at least one x-ray source and the object.

Abstract: A system for carrying out or monitoring irradiation of a moving object using a particle beam is provided. A particle beam may be directed onto the moving object from a beam outlet. X-ray images from different directions are recorded by an imaging unit. The imaging unit may include an x-ray detector and an x-ray emitter opposite the x-ray detector. The imaging unit may be positioned around the object independently of the position of the beam outlet, for example, during application of the particle beam. The X-ray images may be used to reconstruct a series of digital tomosynthesis images of the moving object online. The reconstructed digital tomosynthesis images are evaluated so that movement of the moving object is captured and the irradiation profile is controlled.

Abstract: The console selects one radiographing order information item from the radiographing order information list stored in the storing section. A step is taken to determine whether or not the one selected radiographing order information item has a predetermined relationship with the other radiographing order information, and the permission of additional selection is granted only to the radiographing order information having a predetermined relationship.

Abstract: An x-ray device is provided. The x-ray device includes a C-arm, on which a radiographic source and a heat pump are arranged. At least sections of the C-arm are hollow, such that at least sections of the radiographic source and the heat pump are arranged inside the C-arm.

Abstract: A mobile CT imaging system comprising a housing having a center opening; and a CT imaging unit mounted to the housing, wherein the CT imaging unit is adapted to scan anatomical objects located within the center opening and generate images of the same, wherein the CT imaging unit comprises: a rotatable drum assembly disposed within the housing, concentric with the center opening; an X-ray tube mounted on the rotatable drum assembly and configured to emit an X-ray beam; and an X-ray detector mounted on the rotatable drum assembly in alignment with the X-ray beam; wherein the X-ray beam is disposed in an “off-center” configuration, adjacent to an entrance of the center opening.

Abstract: A data transmission system that includes a transmitter; a receiver; and a magnetically coupled rotary transformer having a first portion and a second portion in moveable relationship with one another. The transmitter is electrically and mechanically coupled to the first portion of the rotary transformer, and the receiver is electrically and mechanically coupled to the second portion of the rotary transformer. The transmitter and the receiver are configured to wirelessly communicate data across the rotary transformer while the first and the second portions of the rotary transformer are in relative rotary motion.

Abstract: A rotation mechanism for use with an x-ray wallstand housing includes a rotating shaft, a gas spring, a connecting rod, a ball screw nut seat, a ball screw base, a brake, a clutch, a motor, a conveyor belt, a ball screw and a damper disposed between said ball screw base and said ball screw nut seat.

Abstract: Disclosed herein are a rail system and an X-ray imaging apparatus using the same. The rail system includes a rail unit, a detecting unit and an X-ray generating unit. The rail unit is provided on a support surface and extends for a predetermined length. The detecting unit is provided on the rail unit and includes a detector stand which is provided on the rail unit so as to be movable in the longitudinal direction of the rail unit, a detector arm which has a bent structure and is provided on a side surface of the detector stand so as to be movable upwards and downwards, and a detector which is rotatably coupled to the detector arm.

Abstract: A urological x-ray workstation has an x-ray source and an x-ray receiver that are respectively supported on device retainers of a device carrier located at the longitudinal side of a patient positioning table such that they can be positioned opposite one another and independently of one another in various positions on an orbit proceeding around a common center in a working plane oriented perpendicular to the longitudinal axis.

Abstract: A dental radiology apparatus includes: a generator (18) emitting X-radiation provided with a collimation device collimating the radiation in an appropriate manner using several forms of collimation slits, at least one radiation sensor (20a, 20b) including a first, a second and a third image acquisition surface which are each positioned opposite an appropriate form of slit in order to use the apparatus in panoramic mode, cone beam tomographic mode and mode determining a trajectory which will be used in panoramic mode respectively. In the third mode a form of slit elongated along a plane P is arranged opposite the third surface corresponding to a part of the second surface along a Z-axis perpendicular to the plane P and the assembly is driven in rotation about an axis parallel to the Z-axis.

Abstract: The present invention relates to an adjusting positioner for a radiation device, comprising: a clamping device detachably connected to the radiation device to clamp said radiation device; a supporter to which said clamping device is connected and a slide path is defined therebetween, wherein the clamping device clamping said radiation device is movable along said slide path in a predetermined direction; and an adjusting device coupled with said clamping device so as to drive said clamping device to move along said slide path. Since the present invention employs above technical solution, it is easy to adjust the position of the radiation device for example, X-ray device, so that the precisely positioning for the radiation device is achieved and a satisfying positioning accuracy is able to obtain.

Abstract: A multi-mode cone beam computed tomography radiotherapy simulator and treatment machine is disclosed. The radiotherapy simulator and treatment machine both include a rotatable gantry on which is positioned a cone-beam radiation source and a flat panel imager. The flat panel imager captures x-ray image data to generate cone-beam CT volumetric images used to generate a therapy patient position setup and a treatment plan.

Abstract: An x-ray device is provided. The x-ray device includes a C-arm that may be rotatably mounted on a robotic arm. A radiation source and a radiation detector may be arranged on the C-arm. The interior of the C-arm, which is hollow at least in sections, is accessible from at least one access side to allow at least a part of the electronic components used to operate the radiation source and the radiation detector to be integrated in the interior of the arm.

Abstract: An x-ray apparatus is provided. The x-ray apparatus includes a patient support supported on a support unit in such a manner that it can be repositioned by way of a support arm and an x-ray detector likewise supported on the support arm, embodied in particular as a solid-state detector. The x-ray detector can be moved perpendicular to the patient support by way of a retaining column of a repositioning mechanism and can be rotated relative to the patient support about a first longitudinal axis extending in a longitudinal direction of the patient support. To increase the flexibility of the x-ray apparatus, the x-ray detector is supported in such a manner that it can be rotated relative to the patient support about a transverse axis extending in a transverse direction of the patient support.

Abstract: The object of the present invention is a mount for a rotating target, roughly disk-shaped and perforated at its center. The mount is made of a material which a structurally hardened nickel-based superalloy. The mount is disk-shaped with a narrower area at its periphery, and the narrow peripheral area and the thick area surrounding the central orifice are separated by a discontinuous area whose slope is between 3° and 10°, with the thickness ratio between the narrow peripheral area and the thick area surrounding the central orifice being between 1.5 and 3. The superalloy is an Inconel that has undergone a structural hardening treatment after machining. At least one of the mount's surfaces is coated with an emissive coating used to discharge heat through thermal radiation.

Abstract: An X-ray imaging system includes an X-ray irradiator, an X-ray receiver, a support mechanism configured to support the X-ray irradiator and X-ray receiver in opposing positions, and a flat carrier configured to support the support mechanism and including at least one wheel for movement. The X-ray imaging system also includes a handle for manual movement attached to the flat carrier car and brake means juxtaposed to the handle.

Abstract: A medical x-ray acquisition system has an x-ray source and an x-ray detector, the x-ray source having at least one field emission radiator with at least one field emission cathode. The field emission cathode can be formed by a nanostructured material with carbon nanotubes.

Abstract: A hand-held, self-contained x-ray fluorescence (XRF) analyzer produces a small x-ray spot on a sample to interrogate the elemental composition of a sample region of millimeter-size characteristic dimension. The analyzer includes a collimator for aiming an x-ray beam toward a desired location on the sample and for determining the size of the spot produced on the sample. The analyzer may include a digital camera oriented toward the portion of the sample that is, or would be, interrogated by the x-ray spot to facilitate aiming the analyzer. The analyzer may generate a reticule in a displayed image to indicate the portion of the sample that is, or would be, illuminated by the x-ray beam. The analyzer may automatically annotate the image of the sample with text or graphics that contain information about the analyzed sample. The image may be stored in the hand -held analyzer or provided for external storage or display.

Abstract: The invention provides a device for a computer tomography gantry (91) for transmitting data, wherein the gantry comprises a stationary part (92) and a rotary part (93). The device is adapted to transmit the data between the stationary part of the gantry (92) and the rotary part (93) of the gantry (91). The device comprises a hollow conductor (104, 204, 308) which is adapted to guide a first wave, a sender (102, 103) which is adapted to send the first wave inside the hollow conductor and a receiver (106) which is adapted to receive the first wave after a runtime inside the hollow conductor (104, 204, 308). A further aspect of the invention is a computer tomography gantry (91) comprising a device according to the inventive concept. Using the described device allows to transmit data between the rotary (93) and the stationary part (92), to measure a rotating speed of the rotary part (93) and to measure a position of the rotary part (93) with respect to the stationary part (92).