Abstract: A method of registering a real-time image feed from an imaging device inserted into a steerable catheter using a navigation system is provided. The method includes inserting the imaging device into a working channel of the steerable catheter and generating a real-time image feed of one or more reference points, wherein the orientation of the reference points is known. The method further includes orienting a handle of the steerable catheter to a neutral position, displaying the real-time image feed on a display of the navigation system, and registering the real-time image feed to the steerable catheter by rotating the displayed image so that the reference points in the real-time image feed are matched to the known orientation of the reference points.

Abstract: A medical acoustic coupler is to be detachably attached to an ultrasonic probe including a graspable trunk portion and a protruding portion protruding in a width direction from the trunk portion, the medical acoustic coupler including a sheet-like elastic member, the elastic member including: a contact portion located at a central portion of the elastic member in a planar view, the contact portion being brought into contact with an ultrasound transmission/reception surface located at a top edge of the protruding portion when the elastic member is attached to the ultrasonic probe; and loop portions located on the opposite sides of the contact portion from each other, the loop portions each forming a loop, wherein, when the elastic member is attached to the ultrasonic probe, the loop portions are hooked around the protruding portion, to fix the elastic member to the ultrasonic probe.

Abstract: An improved ultrasonic lens and associated system is provided. Specifically, there is provided an ultrasonic lens with two sets of parallel sound ports operatively connected to an electrodynamic transducer to extend the working range of both audible and ultrasonic sound signals. The ultrasonic lens and electrodynamic transducer are situated so that the electrodynamic transducer axis and the sound port axes are aligned, whereby a shift in either the x or y axis direction will influence the ultrasound and audible behavior of the sound signal from the electrodynamic transducer.

Abstract: An ultrasonic device includes an ultrasonic transducer that has a vibration film and transmits an ultrasonic wave from a first surface side of the vibration film, an acoustic matching layer that is provided on the first surface side of the vibration film, and an acoustic lens that is provided on the acoustic matching layer on an opposite side to the vibration film, in which the acoustic matching layer is formed of even-numbered layers including a first layer and a second layer having acoustic impedance lower than acoustic impedance of each of the first layer and the acoustic lens, and the first layer and the second layer are disposed in this order toward the acoustic lens from the vibration film, and in which each of the first layer and the second layer has a thickness corresponding to an odd-numbered multiple of ?/4 with a wavelength of the ultrasonic wave as ?.

Abstract: An acoustic lens contains silicone rubber and metal oxide particles. The metal oxide particles are added into the silicone rubber. The metal oxide particles have a number-average particle diameter of 30 to 2,000 nm, a specific gravity of 3.5 g/cm3 or more, a content of 30 to 150 parts by mass based on 100 parts by mass of the silicone rubber, and an oil absorption amount of 20 mL or less per 100 g.

Abstract: An endoscope and related method comprise a proximal handle and a distal shaft having an insertion end. A housing comprising a camera assembly may be mounted on an insertion end of the shaft and include at least one lens and an image sensor. The camera assembly housing is rotatable about an axis perpendicular to the long axis of the shaft, giving the camera assembly a variable field of view. The rotatable camera assembly housing may be mounted to the insertion end of the shaft so that the rotatable housing of the camera assembly comprises the distal-most element of the endoscope shaft or insertion end. The endoscope may include a circuit board having a first portion disposed within the proximal handle and one or more extension portions that extend within the shaft to the camera assembly and/or to a light source near the distal end of the shaft.

Abstract: A vibrating plate is provided between a substrate and a piezoelectric element formed of electrodes and a piezoelectric layer and includes a first layer which is formed of a silicon oxide and a second layer which is formed of a ceramic having a Young's modulus larger than that of the silicon oxide. Under the condition in which the following expression (1) has a constant value, where in the expression (1), Ev1, dv1, Ev2, and dv2 represent Young's modulus of the first layer, the thickness thereof, Young's modulus of the second layer, and the thickness thereof, Ev1×dv12+Ev2×dv22??(1) when the combination of dv1 and dv2 which sets the value of the following expression (2) in a range of from the minimum value to +2% thereof is represented by (Dv1, Dv2), Ev1×dv13+Ev2×dv23??(2) the thickness of the first layer and the thickness of the second layer are represented by Dv1 and Dv2.

Abstract: An oximeter device has an ergonomically shaped enclosure that allows a user to comfortably grip and use the device during handheld operation. A sensor tip can be easily placed evenly on the tissue surface, so that all sources and detectors are directly on the tissue with even pressure. This allows for more consistent and accurate results. The user can easily move the device from one position to another and take numerous measurements. The user will have a wide, unobstructed view of the tissue because of the tip's small size, angle of display, and the grip and fingers are positioned away from the tip. Components housed by the enclosure are arranged to give the device a balanced weighting while in the hand. The device can be used for long periods at a time without fatigue.

Abstract: Arrangements described herein relate to systems, apparatuses, and methods for managing gel on a subject to provide gel on a first area of the subject, including controlling a transducer to move to a second area of the subject and controlling the transducer to move the gel to the first area from the second area.

Abstract: Provided are an ultrasound probe and an operating method of the ultrasound probe which can select a power transmission channel and/or a wireless power transmission mode that are most appropriate in an environment in which power transmission channels exist. The operating method of the ultrasound probe includes operations of obtaining a plurality of pieces of information about power transmission channels; displaying a power transmission channel list, based on the plurality of pieces of information about the power transmission channels; selecting a power transmission channel from the power transmission channel list; and receiving wireless power that is transmitted via the selected power transmission channel.

Abstract: An ultrasonic reflex imaging device and a method are described. A device according to the invention may include a platen, a generator, and a receiver positioned between the platen and the generator. A backer may be positioned so that the insonification device is between the receiver array and the backer. The backer may be configured to absorb or delay energy that originated from the generator. The generator produces an energy pulse, which travels through the receiver and the platen to reach a biological object. Part of the energy pulse is reflected from the biological object. The reflected energy pulse travels through the platen to the detector. The detector converts the reflect energy pulse to electric signals, which are then interpreted to create an image of the biological object.

Abstract: The present invention reduces noise generated by a phase change in an ultrasonic wave focusing apparatus that changes an ultrasonic wave focal point within a space by changing the phase of vibration of a plurality of ultrasonic transducers. When inputted position coordinates within a three-dimensional space are changed, the ultrasonic wave focusing apparatus calculates a target time lag Tnew that allows ultrasonic waves outputted from the ultrasonic transducers to form a focal point at the changed position coordinates X1, Y1, Z1. The ultrasonic wave focusing apparatus then examines the ultrasonic transducers to locate a particular ultrasonic transducer that outputs an ultrasonic wave whose time lag Ttmp differs from the target time lag Tnew, and changes the phase of the outputted ultrasonic wave to a target phase in multiple steps (steps 140 and 150).

Abstract: Systems, devices and methods related to various heart valve implants and for delivery of those heart valve implants are described. The implants may be used to re-size a native valve annulus or to replace a native heart valve. The implants include a re-sizable frame having angled struts. Anchors secure the implant to tissue and collars are used to decrease the angle between the struts and contract the frame. The implant thus expands from a first size inside of a delivery catheter, to a second and larger deployed size inside the heart to engage and anchor with the tissue, and then to a third and contracted size to re-size the annulus and/or provide a secure fit for a replacement heart valve. Various delivery systems including imaging capabilities for precise delivery, positioning and anchoring of the various implants are further described.

Abstract: A device which detects and locates an impact on a structure. The device includes at least three acoustic sensors so that an acoustic wave emitted at any point of a measurement space can be received through direct propagation by each of the sensors. The device also includes command controller configured to process the signals corresponding to the acoustic waves received by the acoustic sensors, to detect the occurrence of an impact, and to locate a point of the structure that is the source of an acoustic wave. At least one optical pointer is actuated by the command controller so as to designate an impact point located on the structure by illuminating a corresponding site of the structure.

Abstract: An image processing apparatus, comprises an image acquiring unit that acquires a plurality of object images captured by imaging an object for a plurality of times; a shape acquiring unit that acquires shape information, which is information representing a shape of the object; an image dividing unit that divides each of the plurality of object images into at least two partial images, based on the shape information; and an image registering unit that registers the divided partial images.

Abstract: Apparatuses for detecting swallowing disorders and methods for using same are provided. In a general embodiment, the apparatuses include a disposable sensor base and a sensor that is received by the disposable sensor base. The sensor base includes a sensor interface having a predetermined cut-away shape and a directionally-keyed mating surface. The sensor includes a handle portion having a shape that corresponds to the predetermined shape of the sensor interface, a support portion configured to be received by the directionally-keyed mating surface when the sensor is inserted into the sensor interface, and electronics configured to collect data sensed by the sensor. The apparatuses of the present disclosure can be attached to a patient's neck to detect and/or diagnose swallowing disorders during a swallowing test.

Abstract: A system for facilitating display of cardiac information includes a display device configured to present a cardiac map; and a processing unit configured to: receive electrical signals and indications of measurement locations corresponding to the electrical signals; generate, based on the electrical signals, the cardiac map, which includes annotations representing cardiac signal features; and determine a set of interesting cardiac signal features. The processing unit also may determine, based on the set of interesting cardiac signal features, a region of interest; and facilitate display, via the display device, of the cardiac map and a representation of the region of interest. The representation of the region of interest includes a first display parameter value that is different from a second display parameter value, where the second display parameter value is associated with at least one cardiac signal feature that is not included within the region of interest.

Abstract: A piezoelectric film which is better in heat and deformation resistant properties than those in the prior art is provided along with a method of manufacture. The film is a piezoelectric film that is composed of a copolymer of vinylidene fluoride and trifluoroethylene, the copolymer having a content of vinylidene fluoride in a range of not less than 82 mol % and not more than 86 mol % and having a molecular weight not less than 600,000. The piezoelectric film is subjected to a heat treatment for crystallization of the copolymer at a temperature ranging from not less than 140° C. to not more than 150° C., and is thereby caused to develop piezoelectric property. The piezoelectric film further has a heat resistance of not less than 140° C. and a breaking distortion of not less than 8% and not more than 55%, and an excellent deformation resistant property.

Abstract: An ultrasonic device includes a base, a plurality of ultrasonic transducer elements, an acoustic adjustment layer, and a wall part. The ultrasonic transducer elements are arranged in an array form on the base, each of the ultrasonic transducer elements having a vibration film. The acoustic adjustment layer is disposed on each of the ultrasonic transducer elements. The wall part is arranged between adjacent ones of the ultrasonic transducer elements when viewed in a plan view along a thickness direction of the base such that the acoustic adjustment layer on the adjacent ones of the ultrasonic transducer elements are separated by the wall part in a range of at least a portion of a height of the acoustic adjustment layer measured from the base. The wall part has an acoustic impedance that is higher than an acoustic impedance of the acoustic adjustment layer.

Abstract: An ultrasonic device includes a substrate having an ultrasonic element arranged on a first face of the substrate, an acoustic lens provided on a first face side of the substrate via an acoustic matching layer, and a frame having a first fixing portion and a second fixing portion. The first fixing portion and the second fixing portion being disposed between the substrate and the acoustic lens. The first fixing portion and the second fixing portion protrude toward each other in a direction generally along the first face of the substrate. The first fixing portion and the second fixing portion are separated by a perforated portion therebetween through which the acoustic matching layer penetrates. The first fixing portion and the second fixing portion are connected to the substrate and in contact with the acoustic lens.

Abstract: Couplers for ultrasound probes can have a solid coupler body with a cavity having a malleable shape so as to be able to be conform to and/or self-attach to the end of the probe by a user pressing the coupler body against the ultrasound probe so that the coupler body takes on the underlying shape of the ultrasound probe while the exterior body can retain its pre-attached shape.

Abstract: Methods and techniques for fabricating layered structures, such as capacitive micromachined ultrasound transducers, as well as the structures themselves. The layered structure has a membrane that includes a polymer-based layer and a top electrode on the polymer-based layer. The membrane is suspended over a closed cavity and may be actuated by applying a voltage between the top electrode and a bottom electrode that may be positioned along or be a bottom of the closed cavity. The layered structure may be fabricated using a wafer bonding process.

Abstract: Urethrotome dilators for dilating a urethral stricture, and methods for forming and using the same are disclosed. In some embodiments, the urethrotome dilator includes a first distal end with a dilating head, a second proximal end with a handle, and a stem for connecting the first end to the second end. The dilating head may have a first region, a second region, and a channel for receiving a guidewire. The first region of the dilating head may have a substantially conical surface, with a vertex at its distal end and a base at its proximal end. The second region may have a substantially flat surface and a blade for stretching tissue. The blade may be integrally formed within the second region and may extend from the flat surface. The top edge of the blade may be tapered and blunt, while the two opposing sides of the blade may be formed with sharp corners for cutting tissue.

Abstract: In a biopsy needle having a hollow tubular outer needle, an inner needle that is disposed in a hollow portion of the outer needle so as to be movable in the tube axis direction relative to the outer needle, and a recessed sample collection portion that is cut inward from a circumferential surface of the inner needle, an inner hole that extends in the longitudinal direction of the inner needle on each of the inner needle distal end side and the inner needle rear end side of the sample collection portion and are opened to the sample collection portion is provided in the inner needle, and a light guide member is disposed in the inner holes. At least a part of the light guide member is fixed by filler filled in the inner holes.

Abstract: A surgical tool with a bendable shaft. At least one inelastic cable and at least one elastic cable extend along the shaft. The shaft moves relative to the body to which the shaft is attached. When the shaft is so displaced, the shat bends around the inelastic cable. The inelastic and elastic cables cooperate to hold the bendable section of the shaft in compression so the bendable section of the shaft resists deformation.

Abstract: A probe, including an ablation element which is configured to perform ablation of tissue. The probe also includes an ultrasonic transducer, located in proximity to the ablation element, which is configured to transmit acoustic radiation force impulses (ARFIs) to the tissue, and to measure a displacement of the tissue in response to the ARFIs so as to monitor the ablation of the tissue.

Abstract: Techniques are described herein for displacing liquid away from a signal path of sonic signals in a signal anemometer. A sonic anemometer may include a membrane positioned between a sonic transducer and the open environment. The membrane may be formed of a hydrophobic material that repels the liquid. The membrane may also include a plurality of pores that impede the flow of liquid through the membrane but enables sonic signals to pass through the membrane. The sonic anemometer may also include a reflector that displaces liquid away from the signal path of the sonic anemometer. The reflector may include one or more pores that wick liquid away from the signal path.

Abstract: A method and apparatus for detecting vascular landmarks in a 3D image volume, such as a CT volume, is disclosed. One or more guide slices are detected in a 3D image volume. A set of landmark candidates for multiple target vascular landmarks are then detected based on the guide slices. A node potential value for each landmark candidate is generated based on an error value determined using spatial histogram-based error regression, and edge potential values for pairs of landmark candidates are generated based on a bifurcation analysis of the image volume using vessel tracing. The optimal landmark candidate for each target landmark is then determined using a Markov random field model based on the node potential values and the edge potential values.

Abstract: A registration method whereby a sensor-based approach is used to establish initial registration and whereby upon the commencement of navigating an endoscope, image-based registration methods are used in order to more accurately maintain the registration between the endoscope location and previously-acquired images. A six-degree-of-freedom location sensor is placed on the probe in order to reduce the number of previously-acquired images that must be compared to a real-time image obtained from the endoscope.

Abstract: An ultrasound signal processing device: performing events involving transmitting ultrasound towards a subject; receiving ultrasound reflection from the subject in response to each event; and generating a frame signal from sub-frame signals generated based on the ultrasound reflection. The device, in each event, causes a transmission aperture to transmit ultrasound focusing in the subject. A transmission aperture for one event differs in position, in a transducer element array direction, from a transmission aperture for a previous event by a shift amount of at least twice a transducer element width. The device, for each event, sets a target area which includes a position where transmitted ultrasound focuses and whose width in the transducer element array direction, at a depth where the transmitted ultrasound focuses, is equal to or greater than the shift amount. The device generates a sub-frame signal covering measurement points included in the target area.

Abstract: According to one embodiment, an ultrasonic probe, in which a plurality of piezoelectric vibrators are arrayed in both of an azimuth direction and an elevation direction, includes a piezoelectric body configured to have a piezoelectric effect; and a matching layer configured to be laminated in an ultrasonic radiation direction of the piezoelectric body. The matching layer is divided in the azimuth direction without being divided in the elevation direction. The piezoelectric body is divided into plural parts in both of the azimuth direction and the elevation direction in such a manner that each of the plural parts of the piezoelectric body forms each of the plurality of piezoelectric vibrators.

Abstract: An articulating instrument including a distal assembly having first and second configurations and intermediate configurations between them. At least one of the first and second configurations is substantially stable such that the distal assembly of the instrument has a tendency to remain in the stable configuration when placed in that configuration by a user of the instrument. Preferably, the distal assembly terminates in a distal tip unit defining at least one distal feature that is useful for manipulating tissue.

Abstract: A method and system for calibrating an ultrasonic wedge and a probe are disclosed. The calibration method includes the steps of automatically determining the ultrasonic signal acquisition width and the first ultrasonic signal gate based on the theoretical parameters of the ultrasonic wedge and the probe. The calibration method can also include the steps of automatically determining the operating status of transducer elements in a phased array transducer and then determining the actual parameters of the ultrasonic wedge based on the live transducer elements.

Abstract: An ultrasound probe including a matching element, a backing layer, a piezoelectric element and a driver is provided. The piezoelectric element is disposed between the matching element and the backing layer. The driver generates a coding wave inputted to the piezoelectric element, such that the piezoelectric element outputs a focusing sonic wave field along a short axis.

Abstract: A probe configured to receive an acoustic wave from an object including an element having a cell structure, in which a vibration membrane having one of a pair of electrodes formed with a gap arranged therebetween is supported so that the vibration membrane can be vibrated by the acoustic wave; a light reflection layer provided at a position near the object with respect to the element and configured to reflect light; and a support layer provided between the element and the light reflection layer and configured to support the light reflection layer.

Abstract: Ultra wideband patient monitoring systems, and particularly baby monitoring systems, adapted to prevent reflective loss between the antenna and the patient's body. The devices, systems and methods described herein may be used to efficiently couple UWB energy to a patient for patient monitoring. In particular, described herein are impedance transformer pads, mats and the like, upon which a patient may comfortably lie while being monitored via one or more UWB sensors (e.g., antenna); the impedance transformer pads help match the impedance and prevent reflective loss of UWB energy. Also described herein are bassinets, including NICU bassinets and baby monitors.

Abstract: An ultrasound catheter includes a hollow body and a plurality of ultrasound sensing regions. The hollow body is made of a flexible circuit board. The ultrasound sensing regions are disposed on a periphery of the hollow body, wherein each of the ultrasound sensing regions has a plurality of channels, and the channels of each ultrasound sensing region are arranged along an axial direction of the hollow body. A medical system using the ultrasound catheter is also provided.

Abstract: An apparatus including a detector configured to detect electromagnetic radiation where the detector includes a first portion and a second portion; a deformable substrate configured to support the detector such that the first portion of detector is moveable relative to the second portion of the detector; and a sensor configured to detect deformation of the substrate and provide information indicative of the detected deformation to image processing circuitry.

Abstract: A resin composition of the present invention contains: an epoxy resin (A); a hardener (B); and an ion exchanger (C). At least one of the epoxy resin (A) and the hardener (B) contains a modified silicone (S), and the epoxy resin (A) is at least one type selected from the group consisting of a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, a phenol novolac type epoxy resin, and an epoxy-modified silicone.

Abstract: A grid calibration system employing interventional equipment including one or more interventional tools (23), a grid (22) having a hole matrix for supporting and guiding the interventional tool(s) (23) within a calibration area, and an imaging device (24) positioned relative to the grid (22) for generating a tool image illustrative of the interventional tool(s) (23) within the calibration area. The grid calibration system further employs a grid calibration workstation (40) for displaying any alignment adjustments to the relative positioning of the grid (22) and the imaging device (24) as derived from an image registration of the tool image and a virtual grid having a point matrix representative of the hole matrix of the grid.

Abstract: An ultrasonic apparatus includes an ultrasonic element substrate that includes an ultrasonic element array transmitting an ultrasonic wave in a first direction, and a first conductive film provided on the first direction side of the ultrasonic element array, a casing portion that has a conductive member provided to surround the ultrasonic element substrate on a side intersecting the first direction of the ultrasonic element substrate, and a support substrate that is provided on an opposite side to the first direction of the ultrasonic element substrate, supports the ultrasonic element substrate, and has conductivity.

Abstract: An ultrasound assembly adapted to be attached to an endoscope includes a multiconductor electrical connector and a first multiconductor cable connected to the connector. An endoscope attachment element, attached to the multiconductor cable is sized to attach to the distal end of the endoscope and a resiliently deformable neck is connected and extends in a distal manner from the distal end of the first multiconductor cable, and has a distal end. A second multiconductor cable has a proximal end connected to the distal end of the first multiconductor cable. Further, an ultrasound transducer head includes a protective covering, supported by the distal end of the neck, and an ultrasound transducer, inside the protective covering and electrically connected to the distal end of the second multiconductor cable. Finally, a tension member is connected to the ultrasound transducer head and is long enough to extend along the length of the target endoscope.

Abstract: A method for extracting a blood vessel is provided. An image relating to a blood vessel may be acquired. The image may include multiple slices. A region of interest in the image may be determined. A blood vessel model may be obtained. The blood vessel may be extracted from the region of interest based on the blood vessel model.

Abstract: A cardiac ablation method including the following steps: inserting a treatment catheter into an atrium of a heart, the treatment catheter including an ultrasound emitter; positioning the ultrasound emitter to face heart tissue within the left atrium outside of a pulmonary vein; emitting ultrasound energy from the ultrasound emitter while rotating the ultrasound emitter about a rotation axis; and ablating heart tissue with the ultrasound energy to form a lesion outside of a pulmonary vein.

Abstract: An ultrasound system has an ultrasound transducer having a transducer housing and a horn provided at the distal end of the transducer housing, an ultrasound transmission member, a sonic connector that is connected to the horn and the proximal end of the ultrasound transmission member, and a catheter knob having a proximal end that is coupled to the distal end of the transducer housing. The catheter knob has a proximal bore that houses the sonic connector. The system also includes a nesting piece that is retained inside the proximal bore of the catheter knob. The nesting piece can be moved from a first position where the sonic connector is received inside the nesting piece to a second position where the sonic connector is separated from the nesting piece when ultrasound energy is being propagated through the ultrasound transmission member.

Abstract: An RFID transponder for a medical instrument and/or for an endoscope includes at least one printed circuit board carrying an antenna embodied as at least one conductor track of the printed circuit board and an RFID circuit coupled to the antenna, wherein the at least one printed circuit board has a substantially ring-shaped embodiment and the at least one conductor track is embodied on a radially extending surface of the printed circuit board. A medical instrument and/or endoscope including an RFID transponder, and to an assembly method for a medical instrument and/or endoscope including an RFID transponder.

Abstract: Various embodiments are directed to articulatable surgical instruments and surgical systems comprising articulatable surgical instruments. Some embodiments comprise an end effector to treat tissue, where the end effector comprises an ultrasonic blade. A hollow shaft may extend proximally from the end effector along a longitudinal axis. A waveguide may extend through the hollow shaft and may be acoustically coupled to the ultrasonic blade. The waveguide may comprise a distally positioned flange positioned within the hollow shaft proximally from the ultrasonic blade and may be held stationary at a first pivot point positioned within the hollow shaft proximally from the flange. A reciprocatable wedge may be configured to interact with the flange to cause the ultrasonic blade to pivot about the first pivot point in a first direction.

Abstract: An ultrasound image diagnostic apparatus includes an ultrasound probe, a transmitter and an image generator. The ultrasound probe transmits ultrasound to a subject and generates a reception signal. The transmitter drives the ultrasound probe to transmit ultrasound that satisfies the following requirements: a wave packet duration is equivalent to or more than the length of 1.5 waveforms at the lower limit frequency of the ?6 dB transmission bandwidth of the ultrasound probe; signal intensity of frequency components in the ?6 dB transmission bandwidth has a standard deviation of 6 or less; and lower limit frequency components in the ?6 dB transmission bandwidth have a signal intensity of ?8 [dB] or higher, the signal intensity being normalized with respect to the maximum intensity of 0 [dB]. The image generator extracts harmonic components from the reception signal and generates ultrasound image data.

Abstract: Presented here are manufacturing techniques to create an irregularly shaped electronic display, including a hollow within which a sensor, such as a camera, can be placed. The manufacturing techniques enable the creation of the hollow anytime during the manufacturing process. The resulting electronic display occupies the full side of the mobile device, with the sensors placed within and surrounded by the display.

Abstract: In a medical apparatus including a medical imaging system and a medical position and navigation system (MPS), the medical imaging system including an imaging transmitter, periodically emitting imaging radiation and an imaging detector, the medical position and navigation system including at least one MPS transmitter periodically transmitting MPS radiation and at least one MPS detector, the MPS radiation electromagnetically interfering with at least one mode of operation of the imaging detector, a device for eliminating interference to the imaging detector caused by positioning radiation, the device comprising a synchronizer, coupled with the medical imaging system and with the medical position and navigation system, synchronizing the imaging detector and each the at least one MPS transmitter, so that neither of the at least one MPS transmitter transmits during the at least one mode of operation of the imaging detector.