摘要:
2-D projection images show the temporal profile of the distribution of a contrast medium in an examination object, which contains a vascular system and its surroundings. Each projection image comprises pixels with pixel values. The pixel values of pixels corresponding to one another in the projection images are defined by at least essentially locationally identical areas of the examination object. A computer assigns a uniform 2-D evaluation core that is uniform for all corresponding pixels at least in a sub-area of pixels corresponding to one another in the projection images that is uniform for the projection images. The computer defines at least one characteristic value for each pixel within each projection image based on the evaluation core assigned to the pixel and assigns it to the relevant pixel. Based on the temporal profile of the characteristic values, the computer defines parameters of at least one function of time, so that any deviation between the function parameterized with the parameters and the temporal profile of the characteristic values is minimized. Based on the parameters the computer defines a type and/or an extent and assigns them to a pixel of a 2-D evaluation image corresponding to the pixels of the projection images. The type indicates whether the respective pixel of the evaluation image corresponds to a vessel of the vascular system, a perfused part or a non-perfused part of the surroundings of a vessel of the vascular system. The extent is characteristic of perfusion. The computer outputs at least the sub-area of the evaluation image to a user via a display device.
摘要:
Method for pre-interventional planning of a 2D fluoroscopy projection for an interventional entry using a fixed instrument, comprising the following steps: a) Recording a 3D data set, b) Planning the intervention, c) Planning the optimum projection direction, d) Registering the 3D data set with a navigation system and a 2D fluoroscopy system, e) Transmission of the intervention data to the navigation system, f) Computing the position of the fluoroscopy system, and g) Executing the interventional entry under fluoroscopy.
摘要:
A method for positioning a stent able to be deployed to support a vessel in a blood vessel, especially in the cardiology, with the stent after its provisional placement in a not yet deployed state in an area intended for the support of the vessel, being at least partly automatically deployed as a function of at least one triggering signal for final positioning in the blood vessel.
摘要:
The invention relates to a medical examination and/or treatment apparatus comprising an x-ray image recording device, a radiation source, a radiation receiver, a control and processing device and an image generating device, wherein at least one invasive sensor device with an imaging system can be connected to the medical examination and/or treatment apparatus via a multi-modality interface which is implemented as a universal interface via which different invasive sensor devices can be connected.
摘要:
A method and appertaining system permit a co-registration between points in a three-dimensional model of a vessel and vascular images obtained by an imaging catheter within the vessel at the respective points. The three-dimensional model is created by utilizing information from at least two external two-dimensional images produced by, e.g., one or more x-ray devices. The three-dimensional model is displayed on an analysis workstation, and a user may view the vascular images at particular points by selecting the appertaining points on the three-dimensional model.
摘要:
Catheter device with an imaging device, in particular for optical coherence tomography, for insertion into a bifurcation region of a vessel of the human or animal body, comprising a main catheter with a balloon arranged thereupon and inflatable via a supply line, for the purpose of occluding the vessel proximal to the bifurcation, with a total of two further occlusion balloons for positioning in one of the two vascular branches in each case distal to the bifurcation being arranged on the main catheter and/or at least one auxiliary catheter, at a distance from the first balloon, such that they can be inflated for the distal occlusion of the respective vascular branch.
摘要:
The present invention relates to an imaging method with an OCT catheter for visualizing molecular functional processes in vulnerable plaques of a blood vessel of the blood vessel system of a patient, with OCT images of the contrast medium-marked vulnerable plaque being generated during continuously controlled movement of the light-emitting and light-absorbing OCT catheter head along the vulnerable plaque after the intravascular injection of a contrast medium into the blood vessel system and after the intravascular insertion of an imaging OCT catheter into the blood vessel comprising the vulnerable plaque.
摘要:
Method for pre-interventional planning of a 2D fluoroscopy projection for an interventional entry using a fixed instrument, comprising the following steps: a) Recording a 3D data set, b) Planning the intervention, c) Planning the optimum projection direction, d) Registering the 3D data set with a navigation system and a 2D fluoroscopy system, e) Transmission of the intervention data to the navigation system, f) Computing the position of the fluoroscopy system, and g) Executing the interventional entry under fluoroscopy.
摘要:
The invention relates to a device for carrying out intravascular examinations, with which image data generated by an intravascular imaging device and electrocardiography signals measured by an electrocardiography device are displayed by means of a device for simultaneously displaying in subareas of a monitor.
摘要:
A method for operating an x-ray device, (e.g., a fluoroscope), is described herein. The method includes: creating planning information for a therapeutic intervention into a body vessel segment based on a reconstruction of the body vessel segment; providing the planning information to a processing unit of the x-ray device; providing the reconstruction of the body vessel segment to the processing unit; creating a recording of the body vessel segment introduced into a recording region of the x-ray device; registering the reconstruction of the body vessel segment with the body vessel segment in the recording region of the x-ray device; displaying the recording of the body vessel segment on a display device of the x-ray device; and superimposing a graphical representation of the planning information on the recording displayed on the display device, in order to increase the efficiency of the therapeutic intervention into the body vessel segment.