摘要:
A method is disclosed for automatically determining the rectum distance in a patient's colon, the path in the colon between a selected site, preferably a lesion, and the rectum being determined by processing 3D image data records. At least two 3D image data records are recorded with the patient being differently positioned. Further, the path between the rectum and selected site is determined from the common perusal of the at least two 3D image data records.
摘要:
A method and a device are disclosed for visualizing a sequence of tomographic image data records of an examination volume that has been recorded at a time interval from one another. In at least one embodiment of the method, the image data records are firstly registered with one another. On the basis of the registration with regard to a display perspective and a displayed volume region identical views are generated from at least three of the image data records and displayed on an imaging surface of a graphic display unit in a fashion superposed on one another with adjustable. weighting and/or adjustable transparency. For the superposed display, there are inserted on the imaging surface one or more controllers by whose interactive operation an operator can adjust or vary the weighting and/or transparency with which the at least three views are superposed. The present method and the associated device, in at least one embodiment, allow an operator to evaluate the corresponding image data records with a reduced outlay on time.
摘要:
At least one nonlinear filter is used, in at least one embodiment, on reconstructed tomographic display data of a patient. The display data thus filtered serves the purpose of computer aided detection of high contrast objects. Moreover, in at least one embodiment, a system is disclosed for computer aided detection of high contrast objects in tomographic displays of a patient, preferably in CT, NMR or tomographic ultrasound displays. The system includes at least one recording apparatus and at computer with computer programs for operating the system, in the case of which at least one nonlinear filter is applied to reconstructed tomographic display data of a patient in order subsequently to use these filtered display data to carry out computer aided detection of high contrast objects.
摘要:
A medical diagnostic and data processing system is disclosed. The system includes, in at least one embodiment, an arithmetic logic unit and an imaging diagnostic device that can be connected to the latter for data purposes, and a data memory in which data describing anatomical structures including lymph nodes are stored. The arithmetic logic unit is set up programmatically in such a way to produce an automatic assignment between a lymph node recorded by way of the imaging diagnostic device and data describing the lymph node that are stored in the data memory.
摘要:
A method is disclosed for post-processing of a 3D image data record which has been recorded by way of an imaging tomographic appliance of a body area, and covers at least one hollow organ which is at least partially filled with contrast agent. An imaging apparatus is also disclosed. In the method, an automatic three-dimensional edge detection process is carried out in the 3D image data record in order to determine transitions between areas which have contrast agent and a wall of the hollow organ as boundary surfaces. A weighted high-pass filtering process is carried out at right angles to the boundary surfaces and leads to removal of the areas which have contrast agent and in which process areas around the transitions are given a lower weighting than areas which are further away from the transitions. After low-pass filtering in the areas around the transitions, a 3D image data record is produced from which the areas which are filled with contrast agent are eliminated, without image artifacts being produced at the transitions to the wall of the hollow organ. The method can be used in particular for virtual bowel cleaning in virtual colonography.
摘要:
A method is disclosed for the automatic contrast medium phase classification of at least one image data record, of the interior of an examination object, generated by way of an imaging system. In at least one embodiment of the method, firstly at least one image data record of the examination object is acquired and metadata associated with the image data record are determined, the metadata including at least one of body region data containing information about a body region of the examination object that is covered by the image data record, and/or measurement time data containing information about a measurement time of the image data record and/or high contrast data containing information about highly contrasty image areas in the image data record. The assignment of the image data record to a contrast medium phase is effected, in at least one embodiment, in a manner dependent on the metadata. Furthermore, a description is given of a corresponding image data record classification device and an imaging system including such an image data record classification device.
摘要:
A method is disclosed for improving the accuracy of a bronchial biopsy. In at least one embodiment, the method includes detecting the position and extent of a lesion to be biopsied by way of imaging methods, calculating the maximum biopsy depth with a known biopsy inaccuracy as a function of the extent of the lesion, and producing a biopsy plan on the basis of the calculated maximum biopsy depth and the position of the lesion. A device is also disclosed for carrying out the method.
摘要:
A tomography system and a method are disclosed for visualizing a tomographic display. The system, in at least one embodiment, includes a detector system for scanning an object, an arithmetic logic unit for conditioning the data determined by the scanning, and a device for visualizing tomographic image data of the scanned object with a first image resolution. According to at least one embodiment of the invention, the device for visualizing the tomographic image data has a selectable display function by which a subregion of the visualization is marked, and this marked subregion is simultaneously displayed in a second, relatively higher image resolution in addition to the visualization in the first image resolution, the calculation of the tomographic display being performed with the first, relatively low resolution, and a recalculation with the set, relatively higher resolution being carried out for the marked subregion.
摘要:
Disclosed is an automated technique for analyzing the affected region due to an embolism in an organ. A segmented image of the organ vasculature is generated using image volume data received, for example, from a Computed Tomography (CT) machine. An embolus is then identified (either manually or automatically) within the segmented image, and the volume of the organ affected by the embolism is automatically determined. The volume of the organ affected by the embolism may be determined by computing a sub-tree within the segmented image, where the sub-tree comprises vessels that are distal to the identified embolus point. In one embodiment, the sub-tree is generated by determining a plane perpendicular to a vessel at the embolus point such that the sub-tree comprises a distal portion of the vasculature with respect to the plane. Unwanted overlapping trees are identified (e.g., by analyzing branch angles) and removed from the sub-tree. The volume of the organ affected by the embolism is determined by calculating a volume of the organ that is perfused by the sub-tree. The affected volume may be adjusted by scaling the volume based on the percentage occlusion of the partial embolus.
摘要:
A method is disclosed for visualizing bumps of the inner surface of a hollow organ. In at least one embodiment, the method includes acquiring recorded image data of the hollow organ using an imaging system; drawing a cutting edge in the image data along the surface of the hollow organ in the longitudinal direction; preparing the image data to display the surface of the hollow organ along a plane on which the surface is plotted in an opened-up fashion; and changing a viewing angle and/or an illumination angle during a display of the hollow organ, a rotation of the plane along an axis running parallel to the cutting edge and/or along an axis running transversely to the cutting edge being carried out to change the viewing angle. A visualization module, an image processing device with such a visualization module and a tomographic system with such an image processing system.