Abstract: Presented herein are methods and systems for visualizing an object region. The system including an electronic image capturing device, comprising an optical assembly, which provides a first optical channel for a first imaging beam path imaging the object region on a first sensor area of the image capturing device and a second optical channel for a second imaging beam path imaging the object region on a second sensor area of the image capturing device and which contains a microscope main objective system, through which the first imaging beam path and the second imaging beam path pass, comprising a first image producing device for the visualization of the object region for a first observer, to whom a first image of the object region, captured on the first sensor area, and a second image of the object region, captured on the second sensor area, are suppliable, and comprising a second image producing device for visualizing the object region for a second observer.

Abstract: The disclosure relates to a method for imaging by a medical X-ray device. In order to enable a reduction of an X-ray dose during imaging, the method includes: determining a viewing parameter of a viewer with reference to a future display of an image recorded by the X-ray device, determining a recording parameter set including an X-ray dose at least partially in dependence on the viewing parameter, and recording an image by the X-ray device using the recording parameter set.

Abstract: An improved guide for a medical needle is disclosed herein. An aligning element for aligning a needle guide, which is equipped for longitudinally guiding a medical needle, includes a connecting element for arranging the aligning element on the needle guide, and a light-guiding element for a predetermined diffusion of light. The light-guiding element only generates a predetermined light pattern relative to the diffusion of light in a pose predetermined by the geometry of the apparatus. Such an aligning element may be used in a treatment arrangement for longitudinally guiding a needle and in a method for aligning a needle guide.

Abstract: A method for supporting a user, a corresponding computer program product, a corresponding data medium, and a corresponding imaging system are provided. According to the method, a three-dimensional (3D) data set depicting a target object is provided, and at least one two-dimensional (2D) image of the target object is automatically acquired. The 2D image and the 3D data set are automatically registered with each other by a 2D/3D registration. A spatial direction in which the 2D/3D registration exhibits greatest uncertainty is automatically specified. A signal for aligning an instrument that is provided for the purpose of examining the target object is then automatically generated and output as a function of the specified spatial direction in order to support the user.

Abstract: Motion correction of a three-dimensional (3D) image dataset reconstructed from a plurality of two-dimensional (2D) projection images acquired by an X-ray device is provided. In order to acquire the projection images, each of two acquisition assemblies covers an angular range of projection angles, and pairs of projection images of a region under examination are acquired at least substantially simultaneously at each acquisition time instant. For each pair of projection images, at least one marker object lying in the region under examination is automatically localized in order to determine 2D location information. 3D position information about the marker object is determined using acquisition geometries of the respective pair of projection images. Motion information describing a motion profile of the marker object over the acquisition period is ascertained from the position information at different acquisition time instants, and the motion information is used for motion correction of the image dataset.

Abstract: A camera image is acquired by a camera and a structure that is optically concealed in the camera image is acquired by a material-penetrating acquisition modality. A stereoscopic depth location of a common reference point is then fixed at a predetermined value. The stereoscopic representation is then generated from the camera image, and an overlay image is generated based on the concealed structure. In this case, a depth location of the camera image is fixed at the depth location of the reference point, and, as a function thereof, a depth location of the overlay image is adjusted in relation to the depth location of the reference point, such that in the stereoscopic representation, the overlay image appears realistically in front of and/or behind an optically opaque part in the recording direction of the camera image.

Abstract: A microscopy method for imaging an object includes: imaging the object into an optical image onto an image detector, generating electronic image data from the optical image using the image detector and generating an electronic image from the electronic image data, defining a region of interest in the electronic image, determining a depth distribution in the region of interest and/or in a region of the object corresponding to the region of interest, determining a desired depth region in the depth distribution, selecting at least one imaging parameter with which a size of a depth-of-field region can be changed, and setting the depth-of-field region of the electronic image by changing the at least one selected imaging parameter such that the depth-of-field region covers the desired depth region or covers a specific portion thereof.

Abstract: A digital microscope is provided. The digital microscope includes an adjustable imaging system configured to display an object on an electronic display device, a control device which adjusts the imaging system, and a distance capturing device configured to determine a distance between an observer and the display device. The control device determines a perceivable structure size, perceivable on the display device, depending on the distance, and adjusts the imaging system to permit a resolved structure size, resolved by the display device, to be identical to the perceivable structure size within a given tolerance range.

Abstract: An optical detection filter has a transmission spectrum for detecting fluorescence light of a plurality of different fluorescent dyes. In the range between 350 nm and 1000 nm, the transmission spectrum has a first stopband (DS1) from D?1 to D?2, a first passband (DD1) from D?2 to D?3, a second stopband (DS2) from D?3 to D?4, a second passband (DD2) from D?4 to D?5, a third stopband (DS3) from D?5 to D?6, and a third passband (DD3) from D?6 to D?7. The stopbands (DS1, DS2, DS3) each have a mean transmittance of at most 0.01, typically at most 0.001 or at most 0.0001, and the passbands (DD1, DD2) each have a mean transmittance of at least 0.5, typically at least 0.8 or at least 0.9; wherein 350 nm?D?1<D?2<D?3<D?4<D?5<D?6<D?7<1000 nm.

Abstract: A system for visualizing a three-dimensional target area of an object with a measuring device which determines a distance of a surgical instrument in a target area with respect to a predetermined structure in the target area, a display unit for representing the views, and a control unit. The control unit controls the display unit such that the display unit is in a first display mode when a determined distance is greater than a predetermined first limit value, and switches from the first display mode into a second display mode when the determined distance changes from being greater than a predetermined second limit value, which is smaller than or equal to the predetermined first limit value, to smaller than the predetermined second limit value.

Abstract: An operating microscope produces an observation image of an object region for an observer. The operating microscope has an eyepiece for observing the observation image of the object region in an intermediate image plane and it contains an imaging optical unit for producing an optical image of the object region in the intermediate image plane by way of an optical object region imaging beam path that is guided from the object region into the intermediate image plane. In the operating microscope, there is a switchable optical assembly for selectively clearing and interrupting the optical object region imaging beam path and an image sensor for capturing an image of the object region by way of an optical image sensor beam path that is guided from the object region to the image sensor.

Abstract: A microscopy method for quantifying a fluorescence of protoporphyrin IX includes: imaging an object region onto a first detector field and a second detector field, wherein a first optical filter and a second optical filter, respectively, are arranged in the beam paths between the object region and the detector fields, the first optical filter and second optical filter respectively having a wavelength-dependent transmission characteristic; exciting at least a first fluorescence of protoporphyrin IX and a second fluorescence; recording first images and second images; and determining a spatially dependent fluorescence intensity of the first fluorescence in the object region by virtue of determining values representing a fluorescence intensity at locations in the object region, wherein the values are determined on the basis of the radiation intensities of the two detector fields detected in a spatially dependent manner and the spatially dependent wavelength-dependent detection efficiencies of the two detector fie

Abstract: An optical detection filter has a transmission spectrum for detecting fluorescence light of a plurality of different fluorescent dyes. In the range between 350 nm and 1000 nm, the transmission spectrum has a first stopband (DS1) from D?1 to D?2, a first passband (DD1) from D?2 to D?3, a second stopband (DS2) from D?3 to D?4, a second passband (DD2) from D?4 to D?5, a third stopband (DS3) from D?5 to D?6, and a third passband (DD3) from D?6 to D?7. The stopbands (DS1, DS2, DS3) each have a mean transmittance of at most 0.01, typically at most 0.001 or at most 0.0001, and the passbands (DD1, DD2) each have a mean transmittance of at least 0.5, typically at least 0.8 or at least 0.9; wherein 350 nm?D?1<D?2<D?3<D?4<D?5<D?6<D?7<1000 nm.

Abstract: The invention relates to a method for presenting images recorded by means of a digital surgical microscope system (10). An image is thereby produced on an image sensor (13) by means of an image recording unit (12) and the image recorded by the image sensor (13) is reproduced for a user (5), at least in certain regions, on a display unit (18). According to the invention, the magnification of the image reproduced is increased, a limit value of the magnification being set by using situative parameters for the determination of an optimum magnification. The invention also comprises a digital surgical microscope system (10) in which the method according to the invention is realized.

Abstract: Presented herein are methods and systems for visualizing an object region. The system including an electronic image capturing device, comprising an optical assembly, which provides a first optical channel for a first imaging beam path imaging the object region on a first sensor area of the image capturing device and a second optical channel for a second imaging beam path imaging the object region on a second sensor area of the image capturing device and which contains a microscope main objective system, through which the first imaging beam path and the second imaging beam path pass, comprising a first image producing device for the visualization of the object region for a first observer, to whom a first image of the object region, captured on the first sensor area, and a second image of the object region, captured on the second sensor area, are suppliable, and comprising a second image producing device for visualizing the object region for a second observer.