Abstract: A system and method may be used to evaluate soft tissue. A knee arthroplasty soft tissue evaluation may use an adjustable spacer, such as varying sized physical spacers or an inflatable bladder, along with a sensor to measure force, pressure, gap distance, or the like during a range of motion test. A method may include maintaining an equal pressure or gap distance for a medial component and a lateral component of an adjustable spacer during a range of motion test. Information, including, for example a maximum or minimum gap distance or pressure may be determined during the range of motion test. The determined information may be output for display or used to update a surgical plan.

Abstract: A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.

Abstract: A hyperspectral imaging system can include a first hyperspectral imaging camera that is configured to provide first hyperspectral image data of an object in a first field of view. A second hyperspectral imaging camera can be separated from the first hyperspectral imaging camera, where the second hyperspectral imaging camera is configured to provide second hyperspectral image data of the object in a second field of view. A processor circuit can be operatively coupled to the first and second hyperspectral imaging cameras, where the processor circuit configured to combine the first and second hyperspectral image data to generate a hypercube of data for the object comprising spectral data included in the first and second hyperspectral image data.

Abstract: Machine-based risk prediction or assistance is provided for peri-procedural complication, such as peri-procedural myocardial infarction (PMI). A machine-learned model is used to predict risk of PMI and/or recommend courses of action to avoid PMI in PCI. Various combinations of types or modes of information are used in the prediction, such as both imaging and non-imaging data. The prediction may be made prior to, during, and/or after PCI using the machine-learned model to more quickly reduce the chance of PMI. The workflows for prior, during, and/or post PCI incorporate the risk prediction and/or risk-based recommendations to reduce PMI for patients.

Abstract: Systems and methods are disclosed herein for processing ultrasound images to identify objects for diagnostic and/or interventional use. For instance, an ultrasound image of an anatomical structure may be received from a computing device of an ultrasound imaging system. The ultrasound image may be input to a machine learning model that is trained to identify a plurality of objects in ultrasound images of the anatomical structure. The plurality of objects may include anatomical features, disruptive features, and/or instruments. A prediction of one or more objects from the plurality of objects identified in the ultrasound image may be received as output of the machine learning model. An indication of the prediction may be provided to the computing device for display on a display of the ultrasound imaging system.

Abstract: A system and method for generating reports on perfusion blood volume from computed tomography (CT) data acquired from a subject. The method includes receiving multi-faceted CT data acquired from the subject using one of a multi-energy or polychromatic CT acquisition and deriving an iodine concentration in an artery feeding a volume of interest (VOI) in the multi-faceted CT data. The method further includes determining an effective atomic number of a spatial distribution in the VOL calculating a perfused blood volume of the VOI using the iodine concentration and the effective atomic number, and generating a report of the perfused blood volume of the VOI.

Abstract: Proposed is a technique for performing sexing of a fertilized egg with a high sexing rate at a high speed, based on image data obtained by photographing a contour of the egg. In particular, a fertilized egg sexing method, a fertilized egg sexing apparatus and a program for making a female/male judgment of a fertilized egg according to a contour of the fertilized egg by a computer are proposed. The fertilized egg sexing method includes: extracting the contour based on image data obtained by photographing the fertilized egg at different angles, calculating a short radial from the contour, calculating short radial phase differences corresponding to photographing at the angles, and making a female/male judgment using the short radial phase differences.

Abstract: Multi-sequence scanning methods and apparatuses, devices and CT systems are described. A multi-sequence scanning method may include: in response to a parameter configuration command, configuring scan sequence parameters for a plurality of scan sequences in a scan protocol to obtain a target scan protocol, where the scan sequence parameters include a scan start time and a scan duration of each of the scan sequences, and a scan switching duration between the scan sequences, where a total scan duration of the scan sequences in the target scan protocol is configured to be less than or equal to a preset total scan duration, and where the scan switching duration between the scan sequences is configured in a shortest duration mode; and in response to receiving a scan command, controlling the CT system to scan a scanned object according to the scan sequence parameters configured in the target scan protocol.

Abstract: A system and method may be used to evaluate soft tissue. A hip joint evaluation may use an adjustable spacer, such as varying sized physical spacers or an inflatable bladder, along with a sensor to measure force, pressure, gap distance, or the like, for example during a range of motion test. A method may include using a maximum pressure during the range of motion test to determine a maximum pressure during the range of motion test. The maximum pressure may be output for display on a user interface.

Abstract: Systems and methods for robotically distracting a disc space are provided for implantation of an intervertebral prosthetic disc. The system includes a 3D modeling system for creating a 3D model of first and second vertebra adjacent the disc space and identifying positions of the first and second vertebrae. A robotic distractor precisely opens the disc space just large enough to receive a selected intervertebral disc. A computing system stores and processes the 3D model and the positions of the first and second vertebrae before and after distraction. A surgeon interface on the computing system allows the surgeon to select an intervertebral disc prosthesis to be implanted and a desired distraction distance or force to be achieved.

Abstract: A cryosurgical system including a computer system programmed with software configured to perform the following steps: a) capturing at least one first view of a region of interest in a human body; b) capturing at least one second view of the region of interest; c) outlining the region of interest and at least one area outside the region of interest with the assistance of an operator; d) constructing a 3-dimensional model of the region of interest and the at least one area outside the region of interest utilizing the at least one first view and the at least one second view of the region of interest; and e) utilizing the 3-dimensional model of the region of interest and the at least one area outside the region of interest to determine at least one cryosurgical probe placement location.

Abstract: The systems and methods can accurately and efficiently determine boundary conditions for an arterial segment and thereby efficiently determine hemodynamic information for that segment. The method may include receiving medical image data of a patient. The method may further include generating a geometrical representation of the one or more arterial segments from the medical image data. The method may further include determining boundaries and geometry data for each arterial segment. The method may further include determining boundary conditions for the inflow boundary and each outflow boundary. The boundary conditions for each outflow boundary may be determined using an outflow distribution parameter. The outflow distribution parameter may be determined using the geometry data for one or more of the one or more outflow boundaries, stored hemodynamic data, or a combination thereof. The method may further include determining flow field for each arterial segment and determining hemodynamic information.

Abstract: Systems and methods can include a system for positioning an ultrasound probe proximal to anatomy of a patient on an overlay on a radiation couch including a substantially planar base including engagement features to directly or indirectly index the substantially planar base to the radiation couch and a centrally located guide extending longitudinally along a top side of the base, a probe holder, configured to be coupled to, to translate longitudinally, and to be user-accessed and user-controlled from within, a central region of the substantially planar base, a clamp, configured to localize the probe holder at a specified location along a translation path in the central region of the substantially planar base, leg supports shaped to accommodate a patient's legs from behind, the pair of leg supports being shaped and arranged to provide a space therebetween that can accommodate an ultrasound probe holder.

Abstract: An image processing apparatus (10) is disclosed that comprises a processor arrangement (16) adapted to receive image data corresponding to a region of interest (1) of a patients cardiovascular system, said image data comprising a temporal sequence (15) of intravascular ultrasound images acquired (150) at different phases of at least one cardiac cycle of said patient, said intravascular ultrasound images imaging overlapping volumes of the patient's cardiovascular system; implement a spatial reordering process of said temporal sequence of intravascular ultrasound images by evaluating the image data to select at least one spatial reference (6, Vref) associated with said temporal sequence of intravascular ultrasound images; estimating a distance to the at least one spatial reference for each of the intravascular ultrasound images of said temporal sequence; and reordering said temporal sequence of intravascular ultrasound images into a spatial sequence of intravascular ultrasound images based on the estimated dist

Abstract: A system for determining a location for a surgical procedure, having a 3D spatial mapping camera, the 3D spatial mapping camera configured to map a bone. The system also includes a marker attached to a distal end section of the bone, such that the 3D spatial mapping camera is configured to capture a plurality of images of the marker as the bone is rotated in a non-linear path. The images also include data identifying a location of the marker. The system also includes a computer system that receives the data from the images captured by the 3D spatial mapping camera and determines a location of a mechanical axis of the bone, and a mixed reality display, where the computer system is configured to send the location of the mechanical axis to the mixed reality display and the mixed reality display is configured to provide a virtual display of the mechanical axis of the bone.

Abstract: A robotic surgical system for performing surgery, the system includes a robotic arm having a force and/or torque control sensor coupled to the end-effector and configured to hold a first surgical tool. The robotic system further includes an actuator that includes controlled movement of the robotic arm and/or positioning of the end-effector. The system further includes a tracking detector having optical markers for real time detection of (i) surgical tool position and/or end-effector position and (ii) patient position. The system also includes a feedback system for moving the end effector to a planned trajectory based on the threshold distance between the planned trajectory and the actual trajectory.

Abstract: A system for processing breast tissue images includes an image processing computer and a user interface operatively coupled to the image processing computer, wherein the image processing computer is configured to obtain image data of breast tissue, processing the image data to generate a set of reconstructed image slices, the reconstructed image slices collectively depicting the breast tissue, process respective subsets of the reconstructed image slices to generate a set of image slabs, each image slab comprising a synthesized 2D image of a portion of the breast tissue obtained from a respective subset of the set of reconstructed image slices.

Abstract: In some embodiments, data sensed and/or operational parameters used during a catheterization procedure are used in the motion frame-rate updating and visual rendering of a simulated organ geometry. The organ geometry is rendered as a virtual material using a software environment (preferably a graphical game engine) which applies simulated optical laws to material appearance parameters affecting the virtual material's visual appearance, as part of simulating a scene comprising the simulated organ geometry, and optionally also comprising simulated views of a catheter probe used for sensing and/or treatment. Optionally, measurements of and/or effects on tissue by sensing and/or commanded probe-tissue interactions are converted into material appearance changes, allowing dynamic visual simulation of intra-body states and/or events based on optionally non-visual input data.

Abstract: A system for identifying and ameliorating body degradations, the system comprising a computing device, wherein the computing device is configured to receive biological extraction data. Computing device may generate, as a function of a degradation machine-learning model and the biological extraction data, a degradation profile. Computing device may calculate a biological degradation function that is a mathematical function that describes the change in rate of degradation over time corresponding to the user. Computing device may identify, using a degradation imbalance machine-learning process and the degradation profile, a degradation imbalance. Computing device may determine, as a function of the degradation imbalance machine-learning process and the degradation imbalance, a degradation antidote strategy to decrease the rate of biological degradation of a user by performing a simulation.

Abstract: A patient side cart for a teleoperated surgical system may comprise a column extending from a base, the column having a first end connected to the base and a second end opposite the first end. The patient side cart may further include a surgical instrument manipulator arm coupled proximate the second end of the column, and an obstacle indication system comprising an illumination source mounted on the patient side cart at a height above a location the surgical instrument manipulator arm is coupled to the second end of the column, the height being measured in a direction the column extends from the base.

Abstract: A medical image display apparatus for displaying medical images of a lung on a screen includes a network interface receiving positional information of a navigation instrument from a position sensor of the navigation instrument, a video stream from an optical sensor of the navigation instrument, and medical images from an imaging device, a memory storing a plurality of medical images and instructions, a processor executing the instructions, and a display dynamically displaying images on the screen. The instructions, when executed by the processor, cause the medical image display apparatus to determine whether status information indicates a pathway reviewing mode, a target management mode, or a navigation mode. The instructions, when executed by the processor, further cause the display to dynamically select and update images, which are displayed on the screen, among the plurality of medical images based on the positional information of the navigation instrument and status information.

Abstract: A medical system, usable for example in connection with a dialysis apparatus, may utilize radar waves for monitoring a patient, a medical area, or an object. The medical system includes at least one sending device for sending radar waves, and at least one receiving device for receiving reflected radar waves. The medical system further includes an evaluation unit for evaluating the reflected radar waves which have been received by the at least one receiving device, resulting in obtaining a result, and an output device for outputting the result or a signal based on the result.

Abstract: Systems and methods for designing and implementing patient-specific surgical procedures and/or medical devices are disclosed. An example method includes obtaining, first multi-dimensional image data of an anatomical region of a patient in a first loading state; determining, from the first multi-dimensional image data, regions corresponding to anatomic elements of a spine; identifying, in each region, a first set landmarks; obtaining, a second multi-dimensional image data of the anatomical region comprising the spine of the patient in a second loading state; identifying a second set of landmarks from the second multi-dimensional image data that map to the first set of landmarks; obtaining an aligned multi-dimensional image data of the patient's spine; generating a design for a medical implant based on spinopelvic parameters measured from the aligned multi-dimensional image data; and causing a medical implant to be manufactured by sending the design for the medical implement to a manufacturing device.

Abstract: Systems and methods are provided for computer aided phenotyping of fibrosis-related conditions. A digital image indicates presence of collagens in a biological tissue sample. The image is processed to quantify parameters, each parameter describing a feature of the collagens that is expected to be different for different phenotypes of fibrosis. At least some features are tissue level features that describe macroscopic characteristics of the collagens, morphometric level features that describe morphometric characteristics of the collagens, and texture level features that describe an organization of the collagens. At least some of the plurality of parameters are statistics associated with histograms corresponding to distributions of the associated parameters across at least some of the digital image. At least some of the plurality of parameters are combined to obtain one or more composite scores that quantify a phenotype of fibrosis for the biological tissue sample.

Abstract: In an image recording apparatus and an operation method therefor, image data of a patient are recorded with the use of a contrast medium administered to the patient. A computer of the image recording apparatus is provided with an image recording information item, describing the upcoming image recording carried out according to a multi-step sequence and with at least one patient information describing a property of the patient. The computer determines a contrast medium administration information item from these received information items, which designates at least one contrast medium quantity to be administered to the patient and a point in time in the sequence of the upcoming image recording. The contrast medium administration information item is displayed to a user of the image recording apparatus at the determined point in time on a display of the image recording apparatus.

Abstract: Aspects of the present invention relate to providing assistance to medical professionals during the performance of medical procedures through the use of technologies facilitated through a head-worn computer.

Abstract: The present disclosure relates to systems and methods for visualizing a guidewire in a roadmap image. In accordance with certain embodiments, a method includes generating a background mask as a function of at least one background image, wherein the at least one background image includes a blood vessel of interest, generating a contrast mask as a function of at least one contrast image, wherein the at least one contrast image includes a contrast within the blood vessel of interest, receiving a guidewire image, wherein the guidewire image includes a guidewire within the blood vessel of interest, generating a roadmap image as a function of the background mask, contrast mask, and guidewire image, wherein the roadmap image includes the blood vessel of interest, and the guidewire, and outputting the roadmap image to a display.

Abstract: Disclosed are systems, methods, and media capable of generating emergency predictions. The systems, methods, and media generate spatiotemporal emergency communication predictions, carry out data augmentation, detect emergency anomalies, optimize emergency resource allocation, or any combination thereof.

Abstract: Apparatus and methods are described for use with a bodily emission of a subject that is disposed within a toilet bowl. While the bodily emission is disposed within the toilet bowl, light is received from the toilet bowl using one or more light sensors. Using a computer processor, intensities of at least two spectral bands that are within a range of 530 nm to 785 nm are determined, by analyzing the received light, and a ratio of the intensities of the two spectral bands is determined. In response thereto, the computer processor determines that there is a presence of blood within the bodily emission. The computer processor generates an output on an output device, at least partially in response thereto. Other applications are also described.

Abstract: A system and method for intra-operatively measuring or verifying the placement of an implant within a bone in joint arthroplasty procedures are described herein. Pre-operative bone data of the patient is collected. A user plans the position of one or more implants relative to the pre-operative bone data. Intra-operatively, the patients bone is registered to the pre-operative bone data and to a computer-assist device. The bone is prepared and a physical implant is installed with the bone. A plurality of points are digitized on at least one of the physical implant or an apparatus associated with the physical implant. The computer-assist device calculates any errors between the planned position and orientation (POSE) of the implant relative to the actual POSE of the physical implant using the digitized points. The system may further notify a user of any errors and provide instructions to minimize the errors.

Abstract: A surgical planning computing system and related surgical method include identifying an anatomical landmark of a patient's bony anatomy in a three-dimensional anatomical image and determining positioning criteria for an orthopedic prosthesis to be implanted into the patient's bony anatomy. The positioning criteria may define an alignment between the anatomical landmark and a feature of the orthopaedic prosthesis. A three-dimensional model of the orthopaedic prosthesis is positioned in the three-dimensional model based on the positioning criteria to provide a surgical plan for the implantation of the orthopaedic prosthesis.

Abstract: Micromachined ultrasonic transducer (MUT) arrays capable of multiple resonant modes and techniques for operating them are described, for example to achieve both high frequency and low frequency operation in a same device. In embodiments, various sizes of piezoelectric membranes are fabricated for tuning resonance frequency across the membranes. The variously sized piezoelectric membranes are gradually transitioned across a length of the substrate to mitigate destructive interference between membranes oscillating in different modes and frequencies.

Abstract: Visualizing three dimensional content is complicated by display platforms capable of more degrees of freedom to display the content than interface tools have to navigate that content. Disclosed are methods and systems for displaying select portions of the content and generating virtual camera positions with associated look angles for the select portions, such as planar geometries of a three dimensional building, thereby constraining the degrees of freedom for improved navigation through views of the content. Look angles can be associated with axes of the content and fields of view.

Abstract: A system and method are provided herein for modeling of force vectors for serial casts to correct orthopedic deformities includes a camera configured to capture a three-dimensional image of the deformity, a computing device programmed to generate a three-dimensional model of the deformity based on the image of the deformity, determine the boundary conditions for the deformity based on the three-dimensional image of the deformity, and generate force vectors for a series of casts to correct the deformity. In exemplary embodiments, the system can print a series of casts to correct the deformity.

Abstract: A magnetic field generator assembly is configured to be associated with a table supporting a body. The magnetic field generator comprises magnetic field transmitters that are thin (of minimal height) and transparent, or substantially transparent, to x-ray radiation. The magnetic field transmitters are configured to minimally obstruct components of an imaging system and to minimally interfere with image quality.

Abstract: Techniques are provided for improving image data quality, such as in functional imaging follow-up studies, using reconstruction, post-processing, and/or deep-learning enhancement approaches in a way that automatically improves analysis fidelity, such as lesion tracking fidelity. The disclosed approaches may be useful in improving the performance of automatic analysis methods as well as in facilitating reviews performed by clinician.

Abstract: An exoscope with enhanced depth of field imaging is provided. The exoscope includes first and second sets of optical devices, the first set having a fixed image plane, the second set having a variable image plane adjacent the fixed image plane of the first set. The second set includes at least one variable device configured to change the position of the variable image plane. A beamsplitter splits light from a combined optical path of the first and second set to respective image devices of the first and second set of optical devices. A controller controls the at least one variable device to change the position of the variable image plane relative to the fixed image plane, combines images acquired by the respective image devices, and controls a display device to render a combined image.

Abstract: Apparatus and methods are described including tracking a tool portion and a patient marker from a first line of sight, using a first tracking device disposed upon a first head-mounted device that includes a display. The tool portion and the patient marker are tracked from a second line of sight, using a second tracking device. When a portion of the patient marker and the tool portion are both within the first line of sight, an augmented reality image is generated upon the first display based upon data received from the first tracking device and without using data from the second tracking device. When at least the patient marker portion and the tool portion are not both within the first line of sight, a virtual image of the tool and anatomy of the patient is generated using data received from the second tracking device. Other applications are also described.

Abstract: Systems, methods, and devices are provided for assisting or performing guided interventional procedures using. The system uses pre-procedure scans of a patient's anatomy to identify targets and critical structures. A measurement device containing position indicating elements or fiducials is placed in a pre-existing or physician created conduit or lumen whose geometry is known from a scan. During a procedure, the pre-procedure scans may be registered to the patient using the position indicating elements or fiducials and the geometry of the conduit. This registration may be used in an intervention to guide instruments that can obtain diagnostic information or provide therapy to the identified targets. During the procedure, the position indicating elements may be used to dynamically compensate for motion to further improve accuracy.

Abstract: This invention describes how users can capture digital artifacts from any medical device using their mobile device. Some examples of medical devices included, but are not limited to a medical ID card, Medical ID bracelet, Electronic Medical Records, blood pressure machines, blood glucose, scales, inhalers, INR, prescription bottles and trays, pulse oximeter , etc.

Abstract: This application discloses a system for providing information related to an observed entity to a user. The system includes an information database, a score database, an inference engine and an information providing module. The information database has a plurality of messages stored therein and the messages are related to the observed entity. The score database has a plurality of scores recorded thereinto, and the scores are corresponding to the messages and are input by the user. The inference engine retrieves at least one selected message from the messages stored in the information database according to at least one source data and the score database and generates a list of the selected message. The information providing module provides the selected message to the user according to the list.

Abstract: A system and/or method for detecting a ferromagnetic object during surgery comprises a probe tip magnetoresistance device configured for insertion into a human or animal cavity and a probe base magnetoresistance device configured for remaining outside the cavity. The system and method detect the ferromagnetic object by comparing the electrical signals generated by the probe tip and the probe base magnetoresistance devices in response to the ambient magnetic field without generating a magnetic field to detect the ferromagnetic object.

Abstract: Navigation of an instrument within a luminal network can include image-based airway analysis and mapping. Image-based airway analysis can include detecting one or more airways in an image captured within a luminal network and determining branching information indicative of how the current airway in which the image is captured branches into the detected “child” airways. Image-based airway mapping can include mapping the one or more detected airways to corresponding expected airways of the luminal network in the preoperative model.

Abstract: The disclosure provides a system that may: determine first multiple focal point distances associated with respective multiple positions of a plane orthogonal to a laser beam; determine second multiple focal point distances associated with the respective multiple positions via for each position of the multiple positions: determine multiple intensity values associated with respective multiple interim focal point distances, each interim focal point distance greater than each focal point distance of the first multiple focal point distances associated with the position; determine an interim focal point distance respectively associated with a maximum intensity value; and determine a focal point distance as the interim focal point distance; and determine a depth of at least one incision in an eye based at least on differences between each of the second multiple focal point distances and each respective one of the first multiple focal point distances.

Abstract: Systems, methods, and tangibly-implemented software instructions for supporting a teleoperated surgical system (TSS). A surgical input that includes monitored events of the TSS, is received. A current stage of the surgical procedure is autonomously determined based on the surgical input. A call for surgeon assistance may be detected, in response to which context-relevant assistance may be provided to a surgeon console of the TSS, the context-relevant assistance being stage-synchronized with the surgical procedure.

Abstract: A control device including: a control unit that, in a case in which continuous imaging that irradiates a breast of a subject with radiation emitted from a radiation source to capture a radiographic image in a compressed state in which the breast is compressed against an imaging table by a compression member and then captures an ultrasound image of the breast in the compressed state is performed, performs control to locate the radiation source at a non-facing position where the radiation source and the imaging table do not face each other.

Abstract: Disclosed are an apparatus and a method for lesion analysis based on a marginal feature. The method for lesion analysis based on a marginal feature according to an embodiment of the present disclosure may include receiving image data for a target region, identifying a lesion region from the image data, deriving a marginal feature for a lesion based on intensity information of the identified lesion region, and inferring an attribute associated with the lesion based on the marginal feature.

Abstract: A device may provide, to a camera and a projector of a portable projection mapping device, first instructions for calibrating the camera and the projector, and may receive, based on the first instructions, calibration parameters for the camera and the projector. The device may calculate a stereo calibration between the camera and the projector based on the calibration parameters, and may provide, to the camera, second instructions for recognizing a reference instrument associated with the portable projection mapping device. The device may receive, based on the second instructions, binocular images, and may determine additional parameters based on the binocular images. The device may determine recognition parameters for recognizing the reference instrument, based on the binocular images and the additional parameters.

Abstract: Example refrigerators having internal content cameras, and methods of operating the same are disclosed. A disclosed example refrigerator includes a cabinet, an internal compartment disposed within the cabinet, a closing member operatively coupled to the cabinet providing selective access to the internal compartment, two cameras disposed in the compartment and positioned to capture images of different portions of the compartment, two light sources disposed in the compartment, and a controller communicatively coupled with the cameras and light sources and configured to control the light sources to provide two different illuminations for respective ones of the two cameras.

Abstract: The present invention relates to a surgical microscope with a field of view and comprising an optical imaging system which images an inspection area which is at least partially located in the field of view, and to a method for a gesture control of a surgical microscope having an optical imaging system. The surgical microscope further comprises a gesture detection unit for detection of a movement of a surgical instrument, the gesture detection unit having a detection zone which is located between the inspection area and the optical imaging system and is spaced apart from the inspection area, and the gesture detection unit being configured to output a control signal to the optical imaging system depending on the movement of the surgical instrument in the detection zone, the optical imaging system being configured to alter its state depending on the control signal.