60results about How to "Motion compensation" patented technology

Methods and apparatuses for the image guidance and documentation of medical procedures. One embodiment includes combining small field of view images into a recorded image of with a large field of view and aligning the small field of view real time image with the recorded image through correlation of imaging data. A location and orientation determination system may be used to track the imaging system and provide a starting set of image alignment parameters and / or provide change updates to a set of image alignment parameters, which is then further improved through correlating imaging data. The recorded image may be selected according to real time measurement of a cardiac parameter during an image guided cardiac procedure. Image manipulations planned based on the recorded image can be stored and applied to the real time information. The position of the medical device may be determined and recorded through manipulating a cursor in a 3-D image space shown in two non-parallel views.

A method for calibrating a surgical device is provided. The method includes acquiring first data including a position and / or an orientation of a first object disposed on the surgical device at a first location; acquiring second data including a position and / or an orientation of a second object disposed on the surgical device at a second location; determining third data including a position and / or an orientation of the first object relative to the second location; and determining a position and / or an orientation of the second object relative to the second location based at least in part on the first data, the second data, and the third data.

Methods and apparatuses for the image guidance and documentation of medical procedures. One embodiment includes combining small field of view images into a recorded image of with a large field of view and aligning the small field of view real time image with the recorded image through correlation of imaging data. A location and orientation determination system may be used to track the imaging system and provide a starting set of image alignment parameters and / or provide change updates to a set of image alignment parameters, which is then further improved through correlating imaging data. The recorded image may be selected according to real time measurement of a cardiac parameter during an image guided cardiac procedure. Image manipulations planned based on the recorded image can be stored and applied to the real time information. The position of the medical device may be determined and recorded through manipulating a cursor in a 3-D image space shown in two non-parallel views.

A method for controlling a surgical device is provided. The method includes manipulating the surgical device to perform a procedure on a patient; determining whether a relationship between an anatomy of the patient and a position, an orientation, a velocity, and / or an acceleration of a surgical tool of the surgical device corresponds to a desired relationship between the anatomy and the position, the orientation, the velocity, and / or the acceleration of the surgical tool; and imposing a constraint on the surgical device if the relationship does not correspond to the desired relationship and / or a detection device is unable to detect a position of the anatomy and / or the position of the surgical tool.

A method for compensating for motion on screens is provided. In one embodiment, the method includes varying the display of a screen on a device using motion data. In this embodiment, a display adjustment amount also may be determined using screen properties and motion limits. In another embodiment, the method includes varying the location of an input region on a touch screen using touch data. In yet another embodiment, the method includes scaling selectable images and apportioning the display using motion data. Various additional methods, machine-readable media, and systems for motion compensation of a screen are also provided.

A ratchet mechanism for the headband of a protective helmet or other headgear allows for adjustment of the size and fit of the headband. The headband has overlapping rear end portions which are enclosed in a housing, which is comprised of an outer substantially arc-shaped housing section joined to a inner substantially arc-shaped housing section. Also contained with the housing sections is an adjustment mechanism adapted to cause lateral movement of the overlapping rear end portions of said headband with respect to one another. The outer and inner housing sections are substantially segmented into multiple discrete portions such that the respective housing sections are flexible along defined boundaries between the discrete portions to provide for a better and more comfortable fit.

The present invention relates to a method and also an imaging system to compensate for patient motion when recording a series of images in medical imaging, in which a number of images of an area under examination of a patient (17) are recorded at intervals with an imaging system (1) and are related to one another. With the method a localization system (2) is used as the series of images are being recorded to permanently or at a time close to the recording of the individual images, record a momentary spatial location of the area under examination in a reference system permanently linked to the imaging system (1), a first spatial location of the area under examination recorded close to the time of recording of a first image is stored, and a deviation of the images recorded momentarily in each case of the first spatial location is determined and by changing the geometrical circumstances of the imaging system (1) at a time to close the recording of the spatial location and / or through geometrical adaptation of an image content of an image just recorded, is at least approximately commentated for, so that the images show the area under examination in the same position and orientation. The method does not require any time-consuming interaction with the operator and is also suitable for compensating for larger movements of the patient.

The present invention relates to an image reconstruction device (12) for an X-ray apparatus and a method for local 3D reconstruction of an object area of an examination object (7) from 2D image data of several 2D X-ray images of the examination object (7) registered in chronological order with different known projection geometries using the X-ray apparatus. With the method a location in the object area under consideration is selected from one of the 2D X-ray images. The positions of the selected location are determined in at least some of the 2D X-ray images and a spatial motion of the selected location between the registrations of the 2D X-ray images is calculated from the positions obtained, taking the known projection geometries into consideration. The calculated motion is then annulled by modifying the 2D image data in the 2D X-ray images and a 3D image dataset of at least the object area is reconstructed from the modified 2D image data. The method and the image reconstruction device enable a 3D image of a moving locally bounded object area to be reconstructed in a simple way without motion artifacts.

Systems for detecting and tracking of objects and co-registration are described which utilizes methods to create a linearized view of a lumen using multiple imaged frames. In reality a lumen has a trajectory in 3-D, but only a 2-D projected view is available for viewing. The linearized view unravels this 3-D trajectory thus creating a linearized map for every point on the lumen trajectory as seen on the 2-D display. In one mode of the invention, the trajectory is represented as a linearized display along 1 dimension. This linearized view is also combined with lumen measurement data and the result is displayed concurrently on a single image. In another mode of the invention, the position of a treatment device is displayed on the linearized map in real time. In a further extension of this mode, the profile of the lumen dimension is also displayed on this linearized map.

The present invention discloses a method and system compensating for thermally induced motion of probe cards used in testing die on a wafer. A probe card incorporating temperature control devices to maintain a uniform temperature throughout the thickness of the probe card is disclosed. A probe card incorporating bi-material stiffening elements which respond to changes in temperature in such a way as to counteract thermally induced motion of the probe card is disclosed including rolling elements, slots and lubrication. Various means for allowing radial expansion of a probe card to prevent thermally induced motion of the probe card are also disclosed. A method for detecting thermally induced movement of the probe card and moving the wafer to compensate is also disclosed.

A system for subsea transfer of intervention fluids to a subsea intervention apparatus, the system, in certain aspects, including a structure and a frame pivotably mounted thereto, a plurality of frame fluid conduits on the frame for conducting fluid from a connector to conduit apparatus in fluid communication with the subsea intervention apparatus, a connector at an end of the frame for releasably holding an end of a fluid stab assembly, and having a connector fluid conduits in communication with the frame fluid conduits, the connector fluid conduits located for receiving fluid from a fluid stab assembly releasably held by the connector.

An apparatus for registering a series of video images of a spherical or quasi-spherical surface subject to movement relies on projecting at least four diffusely scattering spots of light on the surface in a preferred angular manner, and monitoring the movement of images of the light spots relative to a reference image of the light spots.

A method (10) to compensate for cardiac and respiratory motion in cardiac imaging during minimal invasive (e.g., trans-catheter) AVI procedures by image-based tracking (20, 25) on fluoroscopic images.

Disclosed is a system and method for providing image guidance for medical procedures in which an interstitial ultrasound probe is inserted into the tissue surrounding a tumor. The interstitial ultrasound probe is designed to “ride” in the surrounding tissue so that it may move in conjunction with the tumor and provide intra-operative imagery. A surgeon may guide a surgical instrument and perform interventions such as ablation while tracking the tumor in the ultrasound imagery. The position and orientation of the interstitial ultrasound probe and the surgical instrument are measured throughout the medical procedure to enable either the surgeon, or a robotic arm, to guide the surgical instrument such that it may move in conjunction with the tumor.

A system and method for compensating for motion with displaying ultrasound motion tracking information are provided. The method includes obtaining ultrasound image data of an imaged object and determining motion tracking information based on the ultrasound image data. The method further includes compensating for motion of the imaged object based on the determined motion tracking information and generating motion compensated ultrasound image data in combination with motion tracking indicators based on the motion compensation.

The invention relates to a method for reducing a fade zone by a twin camera monitoring system on a movement platform. When the movement platform loaded with the twin cameras generates the relative position changes with a target area, the method controls the angle and direction of the twin cameras based on the principle of the heterodromous motion of human eyeballs to cause that the target area is always in the public field of view of the twin cameras, thus obtaining the three dimensional depth information of the target area. In the method, after a sensor measures the movement parameters of the movement platform, A / D conversion, digital filtering, calibration conversion, and controlling operation are carried out on the parameters by a camera control unit, and then when a motor of a camera holder compensates the movement of the platform, the angle and direction needing to be rotated is obtained. A control signal drives the rotation of the motor of the camera holder on the movement platform by a serial port. By using the method for simple operation, the motor of the camera holder can be controlled to rotate according to a corresponding direction in a certain speed and the blind zone caused by the movement of the system loading with the camera platform is eliminated.

A ratchet mechanism for the headband of a protective helmet or other headgear allows for adjustment of the size and fit of the headband. The headband has overlapping rear end portions which are enclosed in a housing, which is comprised of an outer substantially arc-shaped housing section joined to a inner substantially arc-shaped housing section. Also contained with the housing sections is an adjustment mechanism adapted to cause lateral movement of the overlapping rear end portions of said headband with respect to one another. The outer and inner housing sections are substantially segmented into multiple discrete portions such that the respective housing sections are flexible along defined boundaries between the discrete portions to provide for a better and more comfortable fit.

The invention discloses an image stabilizing method of binocular vision system based on human eyeball vestibular-ocular reflex in bumpy environment, which is characterized in that the system can stimulate the eyeball vestibular-ocular reflex of human eyes when a platform on which a camera is placed is in the bumpy environment so as to compensate visual errors due to the bumping of the camera platform. The method mainly uses a sensor to measure the kinematic parameter of a motion platform, and then A / D conversion, digital filtering, scale conversion and controlling operation are carried out on parameters by a camera control unit to obtain rotation angle and direction needed by the movement of a camera holder motor compensation platform; the control signal drives the camera holder motor on the motion platform to rotate by a serial port. Thus, the method is adopted for simple operation to control the camera holder motor to rotate according to corresponding direction at certain speed, thus eliminating the visual error brought by rotation and horizontal swinging when the platform provided with the camera moves.

The present invention relates to an imaging device with a thermal imaging surveillance capability for safety, security and situational awareness. Closed circuit television systems (CCTV) are usually supported on drive and actuating mechanisms so that their active imaging portions are housed in a protective environment in a transparent dome. Existing thermal imaging devices are used in fixed configurations or on platforms and are bulky and expensive. In addition they are unsuitable for harsh marine environments. The invention is an imaging device and comprises: a thermal imager, which in use is housed within a sealed housing. A pan and tilt mechanism is supported in the housing for displacing the thermal imager. A dome, formed from an infra-red (IR) transmitting material, covers and seals the housing (which is ideally filled with an inert gas) thereby resulting in an arrangement that is resistant to exposure to water and salt and so provides an imager suitable for marine environments, as well resulting in an overall reduction in size of the imager compared with exposed pan and tilt mechanisms.

The invention discloses a wave compensating device for ascending operation of a high-rise pile cap, and belongs to the technical field of basic maintenance work of offshore wind piles. The wave compensating device comprises a horizontal ladder part, a hydraulic drive compensation mechanism and a base mechanism, wherein the hydraulic drive compensation mechanism is arranged on the base mechanism; the horizontal ladder part is arranged on the hydraulic drive compensation mechanism; the hydraulic drive compensation mechanism drives the horizontal ladder part to move; and the base mechanism is arranged on a bearing hull. The wave compensating device is driven by a hydraulic device to control a hydraulic cylinder to stretch and contract; and when a ship carries out three-degree-of-freedom motion of rolling, pitching and heaving, effective compensation is achieved, so that a worker more safely passes a horizontal ladder. Feedback control is adopted by the wave compensating device for ascending operation of the high-rise pile cap, so that the wave compensating device is strong in anti-jamming capability, good in adaptability, high in compensation accuracy and stable in compensation performance.

An image processing method and related system to register projection images (AG, MI) only with respect to a motion of a landmark across said images. The motion of the landmark relates to a motion of a region of interest, ROI. The so registered images (AG, MI) are then subtracted from each other to arrive at a difference image that is locally motion compensated and that represents the ROI at good contrast whilst subtraction artifacts can be avoided.

An arrangement for automatically cleaning teat cups of a rotary milking platform includes i) a cleaning device at the side of the platform, the cleaning device having a movable part provided with an outlet opening through which a cleaning fluid is supplied to the teat cups; and ii) a positioning unit arranged to provide positioning of the cleaning device to a cleaning position in which the cleaning device is able to supply the cleaning medium from the outlet opening to the teat cups, the positioning unit adapted to provide a positioning of the movable part of the cleaning device in relation to the teat cups from an inactive position on the side of the platform to an active position in which the movable part extends in over the platform towards the teat cups to the cleaning position.

The present invention relates to a method and also an imaging system to compensate for patient motion when recording a series of images in medical imaging, in which a number of images of an area under examination of a patient (17) are recorded at intervals with an imaging system (1) and are related to one another. With the method a localization system (2) is used as the series of images are being recorded to permanently or at a time close to the recording of the individual images, record a momentary spatial location of the area under examination in a reference system permanently linked to the imaging system (1), a first spatial location of the area under examination recorded close to the time of recording of a first image is stored, and a deviation of the images recorded momentarily in each case of the first spatial location is determined and by changing the geometrical circumstances of the imaging system (1) at a time to close the recording of the spatial location and / or through geometrical adaptation of an image content of an image just recorded, is at least approximately commentated for, so that the images show the area under examination in the same position and orientation. The method does not require any time-consuming interaction with the operator and is also suitable for compensating for larger movements of the patient.

Systems for linear mapping of lumens are described which utilizes methods to create a linearized view of a lumen using multiple imaged frames. In reality a lumen has a trajectory in 3-D, but only a 2-D projected view is available for viewing. The linearized view unravels this 3-D trajectory thus creating a linearized map for every point on the lumen trajectory as seen on the 2-D display. In one mode of the invention, the trajectory is represented as a linearized display along 1 dimension. This linearized view is also combined with lumen measurement data and the result is displayed concurrently on a single image. In another mode of the invention, the position of a treatment device is displayed on the linearized map in real time. In a further extension of this mode, the profile of the lumen dimension is also displayed on this linearized map.

In a method of compensating for the effects of motion of an image subject during magnetic resonance imaging using phase encoding in a magnetic resonance imaging system having a number of wireless local coils and a wireless microwave transceiver array, one or more phase encoding steps are implemented to derive one or more magnetic resonance signals in the wireless coils. The signals from the phase encoding steps are upconverted to generate upper and lower sidebands of the magnetic resonance signals; and the upconverted upper and lower sideband signals are transmitted to the microwave array. Signals are derived from the upper and lower sidebands; and a representative phase difference between the signals derived from the upper and lower sidebands is determined from one or more of the phase encoding steps; then the representative phase difference is applied to each pair of derived signals for every phase encoding step to produce phase compensated signal pairs; such that the pair of signals are moved more closely into phase.

A transport device for shock sensitive packages maintains an object in a near zero gravity spatial orientation to reduce or eliminate potentially harmful mechanical shock and or vibration to a body, object or device needing protection. This device has active impact cancellation, and is controlled by a computer via attached sensors that return positional data and reduce or eliminate the deceleration rate of the protected body via programmed algorithms, and rapidly compensating linear actuators.

The invention relates to a method for acquiring MR images (200-216) of an object, said object comprising at least first and second kinds of nuclei, the method comprising: acquiring (300; 304) first MR image data (200; 202; 204) of the object, wherein the first nuclei are excited, acquiring (302) second MR image data (206-216) of the object, wherein the second nuclei are excited, analyzing the first MR image data (200; 202; 204) determining motion parameters describing a motion of the object based on said analysis, motion correcting the first and / or second MR image data (206-216) using said motion parameters.

An antenna system for generating and configuring at least one defocused beam is provided. The antenna system includes a reflector having a focal plane and a non-parabolic curvature for forming the at least one defocused beam, and a plurality of feed antennas that illuminate the reflector. Each feed antenna is disposed in the focal plane of the reflector. The antenna system further includes at least one incoming signal dividing network that divides at least one incoming signal into a plurality of sub-signals, each corresponding to one of the feed antennas, a plurality of variable phase shifters, each receiving one of the sub-signals from the incoming signal dividing network and phase shifting the sub-signal to generate a corresponding phase-shifted sub-signal, and a plurality of fixed-amplitude amplifiers, at least one corresponding to each of the feed antennas. The at least one amplifier for each feed antenna amplifies the corresponding phase-shifted sub-signal to generate an amplified phase-shifted sub-signal which is provided to the corresponding feed antenna.

An arrangement for automatically cleaning teat cups of a rotary milking platform includes i) a cleaning device at the side of the platform, the cleaning device having a movable part provided with an outlet opening through which a cleaning fluid is supplied to the teat cups; and ii) a positioning unit arranged to provide positioning of the cleaning device to a cleaning position in which the cleaning device is able to supply the cleaning medium from the outlet opening to the teat cups, the positioning unit adapted to provide a positioning of the movable part of the cleaning device in relation to the teat cups from an inactive position on the side of the platform to an active position in which the movable part extends in over the platform towards the teat cups to the cleaning position.