Abstract: The present invention relates to a device (10) for determining the position of stents (34, 36) in an image of vasculature structure, the device (10) comprising: an input unit (12); a processing unit (14); and an output unit (16); wherein the input unit (12) is configured to receive a sequence of images (24) of a vasculature structure (38) comprising at least one vessel branch (44, 46); wherein the processing unit (14) is configured to: detect positions of at least two markers (26, 28, 30, 32) for identifying a stent position (50, 52) in at least one of the images (24); detect at least one path indicator (64, 66, 74, 76) for the at least one vessel branch (44, 46) in at least one of the images (24) of the vasculature structure (38) at least for vessel regions in which the positions of the markers (26, 28, 30, 32) are detected; associate the at least two markers (26, 28, 30, 32) to the at least one path indicator (64, 66, 74, 76) based on the detected positions of the markers (26, 28, 30, 32) and the location o

Abstract: Systems and related methods to estimate, for a liquid dynamic system, flow or resistance based on a model of an object and pressure measurements collected in-situ at said object. Alternatively, pressure flow measurements are collected and pressure or resistance is being estimated.

Abstract: An apparatus for determining a functional index for stenosis assessment of a vessel is provided. The apparatus comprises an input interface (40) and a processing unit (50). The input interface is configured to obtain image data (30) representing a two-dimensional representation of a vessel (6). The processing unit (50) is configured to determine a course of the vessel (6) and a width (w1, w2) of the vessel along its course in the image data and is further configured to determine the functional index for stenosis assessment of the vessel based on the width of the vessel in the image data.

Abstract: An apparatus for determining a functional index for stenosis assessment of a vessel is provided. The apparatus comprises an input interface (40) and a processing unit (50). The input interface is configured to obtain image data (30) representing a two-dimensional representation of a vessel (6). The processing unit (50) is configured to determine a course of the vessel (6) and a width (w1, w2) of the vessel along its course in the image data and is further configured to determine the functional index for stenosis assessment of the vessel based on the width of the vessel in the image data.

Abstract: An apparatus for determining a functional index for stenosis assessment of a vessel is provided. The apparatus comprises an input interface (40) and a processing unit (50). The input interface is configured to obtain image data (30) representing a two-dimensional representation of a vessel (6). The processing unit (50) is configured to determine a course of the vessel (6) and a width (w1, w2) of the vessel along its course in the image data and is further configured to determine the functional index for stenosis assessment of the vessel based on the width of the vessel in the image data.

Abstract: Systems and related methods to estimate, for a liquid dynamic system, flow or resistance based on a model of an object and pressure measurements collected in-situ at said object. Alternatively, pressure flow measurements are collected and pressure or resistance is being estimated.

Abstract: An apparatus for determining a functional index for stenosis assessment of a vessel is provided. The apparatus comprises an input interface (40) and a processing unit (50). The input interface is configured to obtain image data (30) representing a two-dimensional representation of a vessel (6). The processing unit (50) is configured to determine a course of the vessel (6) and a width (w1, w2) of the vessel along its course in the image data and is further configured to determine the functional index for stenosis assessment of the vessel based on the width of the vessel in the image data.

Abstract: Systems and related methods to estimate, for a liquid dynamic system, flow or resistance based on a model of an object and pressure measurements collected in-situ at said object. Alternatively, pressure flow measurements are collected and pressure or resistance is being estimated.

Abstract: The invention relates to an assistance device, an assistance system and an assistance method for assisting a practitioner in an interventional hemodynamic (e.g fractional flow reserve (FFR)) measurement on a subject. The FFR pressure measurements are combined with an, for example, angiography-based assessment of the coronary vessel geometry. An advanced computational fluid dynamics model may be employed to add flow and myocardial resistance data based on the interventional pressure values and on a vascular model generated prior to the intervention. In case that these data are available prior to the intervention, the location of most optimal positions for pressure measurements can be pre-calculated and by overlay of the vessel tree, for example, on the X-ray projection, advice can be given for the interventional cardiologist during the intervention.

Abstract: The present invention relates to a device (10) for determining the position of stents (34, 36) in an image of vasculature structure, the device (10) comprising: an input unit (12); a processing unit (14); and an output unit (16); wherein the input unit (12) is configured to receive a sequence of images (24) of a vasculature structure (38) comprising at least one vessel branch (44, 46); wherein the processing unit (14) is configured to: detect positions of at least two markers (26, 28, 30, 32) for identifying a stent position (50, 52) in at least one of the images (24); detect at least one path indicator (64, 66, 74, 76) for the at least one vessel branch (44, 46) in at least one of the images (24) of the vasculature structure (38) at least for vessel regions in which the positions of the markers (26, 28, 30, 32) are detected; associate the at least two markers (26, 28, 30, 32) to the at least one path indicator (64, 66, 74, 76) based on the detected positions of the markers (26, 28, 30, 32) and the location o

Abstract: An apparatus for determining a functional index for stenosis assessment of a vessel is provided. The apparatus comprises an input interface (40) and a processing unit (50). The input interface is configured to obtain image data (30) representing a two-dimensional representation of a vessel (6). The processing unit (50) is configured to determine a course of the vessel (6) and a width (w1, w2) of the vessel along its course in the image data and is further configured to determine the functional index for stenosis assessment of the vessel based on the width of the vessel in the image data.

Abstract: A system and method for vascular roadmapping include an X-ray imaging device for generating a fluoroscopy image, a data base in which a plurality of contrast-enhanced images is stored, a user interface element and a processor. Each of the contrast-enhanced images is stored together with the imaging parameters based on which the image is generated. The user interface element may be configured for selecting any intended imaging parameters, such as by manually adjusting the imaging device in any position and orientation. The processor may be configured for identifying a stored contrast-enhanced image out of the plurality of contrast-enhanced images, which is generated with specific imaging parameters, where the deviation of the specific imaging parameters from the intended imaging parameters is as small as possible, thus the processor may be configured for identifying the nearest available roadmap.

Abstract: Systems and related methods to estimate, for a liquid dynamic system, flow or resistance based on a model of an object and pressure measurements collected in-situ at said object. Alternatively, pressure flow measurements are collected and pressure or resistance is being estimated.

Abstract: The invention relates to an assistance device, an assistance system and an assistance method for assisting a practitioner in an interventional hemodynamic (e.g fractional flow reserve (FFR)) measurement on a subject. The FFR pressure measurements are combined with an, for example, angiography-based assessment of the coronary vessel geometry. An advanced computational fluid dynamics model may be employed to add flow and myocardial resistance data based on the interventional pressure values and on a vascular model generated prior to the intervention. In case that these data are available prior to the intervention, the location of most optimal positions for pressure measurements can be pre-calculated and by overlay of the vessel tree, for example, on the X-ray projection, advice can be given for the interventional cardiologist during the intervention.

Abstract: A multifunctional interface for medical imaging has a lower limb operable multifunctional interface which includes at least one activation element, such as a foot switch pedal, a timing unit, and a control unit. The activation element is configured to provide an activation signal to the control unit when being activated. Further, the timing unit is configured to provide a timing signal to the control unit upon being provided with the activation signal from the activated activation element. The control unit is configured to provide at least two different control signals for triggering at least two different predetermined actions. Further, the control signal is dependent on a duration of the timing signal.

Abstract: A method and an image processing system for the evaluation of projection images generated by an X-ray imaging system, wherein the images may show different instruments of a given set of interventional instruments like catheters or guide wires. The instruments are equipped with markers such that their configuration is characteristic of the corresponding instrument. Preferably three markers are arranged on a straight line, the ratio of the distances between them being characteristic for the corresponding instrument. The image processing system may then identify the instruments present in a given projection and provide functionalities for a user that correspond to said instruments. Moreover, the system may be used to locate an instrument of interest in a projection image if the marker configuration of that instrument is known a priori.

Abstract: A system and method for vascular roadmapping is proposed, the system comprising an X-ray imaging device for generating a fluoroscopy image, a data base in which a plurality of contrast-enhanced images is stored, a user interface element and a processing device. Each of the contrast-enhanced images is stored together with the imaging parameters based on which the image is generated. The user interface element may be configured for selecting any intended imaging parameters, for example by manually adjusting the imaging device in any position and orientation. The processing device may be configured for identifying a stored contrast-enhanced image out of the plurality of contrast-enhanced images, which is generated with specific imaging parameters, wherein the deviation of the specific imaging parameters from the intended imaging parameters is as small as possible, thus the processing device may be configured for identifying the nearest available roadmap.

Abstract: The invention relates to an imaging apparatus for imaging an object (3) being preferentially a catheter. A kinematics model (12) of a robot representing the object (3), which is defined by kinematics parameters, and projection data of the object (3), which correspond to different projection directions, are provided. The kinematics model (12) is modified by modifying the kinematics parameters such that a difference between simulated projection data, which are determined by simulating a forward projection of the kinematics model (12), and the provided projection data is minimized. Since the object (3) is represented by a kinematics model (12) of a robot, movements of the object (3), in particular, deformations of the object (3), can be described in a simple way by few kinematics parameters, thereby allowing modifying the model (12) and, thus, following a movement of the object fast by modifying the few kinematics parameters, in particular, in real-time.

Abstract: The present invention relates to multifunctional interfaces for medical imaging. In order to provide a facilitated and thus easier to operate interface for a medical X-ray imaging system, a lower limb operable multifunctional interface (10) is provided, comprising at least one activation element (12), for example a foot switch pedal, a timing unit (16), and a control unit (18). The activation element is configured to provide an activation signal (20) to the control unit when being pressed. The timing unit is configured to provide a timing signal (22) to the control unit upon being provided with the activation signal from the pressed activation element. The control unit is configured to provide at least two different control signals (24) for triggering at least two different predetermined actions. Further, the control signal is dependent on the duration of the timing signal.

Abstract: The invention relates to an imaging apparatus for imaging an object (3) being preferentially a catheter. A kinematics model (12) of a robot representing the object (3), which is defined by kinematics parameters, and projection data of the object (3), which correspond to different projection directions, are provided. The kinematics model (12) is modified by modifying the kinematics parameters such that a difference between simulated projection data, which are determined by simulating a forward projection of the kinematics model (12), and the provided projection data is minimized Since the object (3) is represented by a kinematics model (12) of a robot, movements of the object (3), in particular, deformations of the object (3), can be described in a simple way by few kinematics parameters, thereby allowing modifying the model (12) and, thus, following a movement of the object fast by modifying the few kinematics parameters, in particular, in real-time.