Abstract:
The present invention relates to a method and a corresponding apparatus for visualization of a tubular structure of an object by use of a 3D image data set of said object. In order to provide a more efficient and illustrative visualization a method is proposed comprising the steps of: - generating and visualising a curved planar reformation view (C) from a symbolic pathway view (B) of said tubular structure, said symbolic pathway view (B) representing said tubular structure and the pathway points of said symbolic pathway being assigned with their 3D spatial position data, and - generating and visualising at least one planar view (O) of said object (1) through a viewing point (V) of said tubular structure selected in said curved planar reformation view (C) or said symbolic pathway view (B).
Abstract:
The invention relates to a method for the computer-aided reconstruction of a three-dimensional anatomical object (3) from diagnostic image data. First of all, a diagnostic image data set of the object (3) is acquired. Then a seed point (5) is set, starting from which the object is reconstructed within a reconstruction volume (4). Thereafter, an adjacent point of the reconstruction volume (4) likewise belonging to the object (3) is located in accordance with a propagation criterion, which is calculated by means of a mathematical analysis of local areas (6, 7), assigned to the point concerned, of the image data set. Reconstruction of the three-dimensional structure of the object (3) is then performed within the reconstruction volume (4) by multiple repetition of this method step and propagation along the located adjacent points. To apply such a reconstruction method to image data obtained by means of rotational X-ray imaging, wherein a plurality of two-dimensional projection images (1, 2) are recorded from different projection directions, the invention proposes that the propagation criterion be calculated by subjecting the local image areas (6, 7) of the two-dimensional projection images (1, 2) in each case individually to the mathematical analysis.
Abstract:
The present inventors have developed a novel approach for efficient delivery of angiogenic factors to the cardiac and peripheral vasculature that avoids problems with toxicity inherent to existing delivery technologies. Vectors carrying coding sequences for Del-1 or VEGF, or both, can be formulated with poloxamers or other polymers for delivery into ischemic tissue and delivered to the heart by retrograde venous perfusion.
Abstract:
A magnetic resonance imaging method includes acquiring a first image (16, 20, 20') of a subject, electronically identifying information related to a suspected pathology based on the first image, electronically planning a magnetic resonance imaging session (40) relating to the suspected pathology based on the identified information relating to the suspected pathology, and executing a selected one of the magnetic resonance imaging sessions to acquire one or more magnetic resonance images of the subject probative of the suspected pathology. A suitable magnetic resonance imaging system may include a magnetic resonance scanner (10), a models database (34, 36) including pathology models (36) including information pertaining to pathologies derived from previously acquired magnetic resonance images of subjects having said pathologies, and a session planner (30) configured to construct a pathology- specific and subject- specific magnetic resonance imaging session plan (40) based on a magnetic resonance scout image (16) and the pathology models (36).
Abstract:
The invention relates to a system (100) arranged to delineate the acute intracerebral haematoma in non-contrasted CT images in two stages. The first stage, performed by the extraction unit (110), employs an analysis of gray values of the image data in order to extract the candidate region. The candidate region may comprise both an acute haematoma and other regions having similar gray values, e.g., regions resulting from partial volume effects at the interface of the bony structures of the skull and the brain. The novel second stage, performed by the classification unit (120), analyzes spatial features of the candidate region such as, for example, the size, shape, and connectedness to the skull bone of the candidate region. Using spatial features of the candidate region improves the correctness of classification of the candidate region as a true or false acute haematoma.
Abstract:
The invention relates to a system (100) arranged to delineate the acute intracerebral haematoma in non-contrasted CT images in two stages. The first stage, performed by the extraction unit (110), employs an analysis of gray values of the image data in order to extract the candidate region. The candidate region may comprise both an acute haematoma and other regions having similar gray values, e.g., regions resulting from partial volume effects at the interface of the bony structures of the skull and the brain. The novel second stage, performed by the classification unit (120), analyzes spatial features of the candidate region such as, for example, the size, shape, and connectedness to the skull bone of the candidate region. Using spatial features of the candidate region improves the correctness of classification of the candidate region as a true or false acute haematoma.
Abstract:
The invention relates to a data processing apparatus and a method for providing visualisation parameters controlling the display of a medical image (12). The data processing apparatus comprises a mapping component (16). The mapping component (16) is arranged to receive a current dataset (15) corresponding to the medical image and comprising a content description thereof,to compare the content description of the current dataset (15) witha content description ofa pluralityofstored datasets, to select at least one further dataset out of the plurality of stored datasets, to retrieve stored visualisation parameters corresponding to the at least one further dataset, and to prepare the retrieved visualisation parameters as the visualisation parameters controlling the display of the medical image (12).
Abstract:
A scanner (10) is used to provide images for automated diagnoses of neurodegenerative diseases, such as Alzheimer s disease. The images are registered (90) to a template (78). The aligned image is analyzed (60) in relation to reference image data (76, 80) which has been registered to the template which is contained in a knowledge maintenance engine (70) for similar patterns of hypo-intensity that would indicate (in the case of an FDG tracer) reduced glucose uptake in the brain. The most appropriate reference images for the analysis of the present study are chosen by a filter (74). The present study is then given a dementia score (84) as a diagnostic feature vector that indicates to a clinician the type and severity of the ailment based on the analysis. The scanner (10) can produce PET or other metabolic and MR images for diagnosis. The MR can be used to measure blood flow rate into the brain. From the blood flow rate and the metabolic image, tracer, e.g. FDG, uptake maps can be generated for use in the automated diagnoses.
Abstract:
The invention relates to an imaging system for imaging an object, wherein the imaging system is adapted for scanning the object in accordance with a scan parameter. The imaging system comprises a projection image generation unit (15) for generating a two-dimensional projection image of the object. A model provision unit (16) provides a three-dimensional model of the object, and a registration unit (17) registers the three-dimensional model with the two-dimensional project ion image. A scan parameter determination unit (18) determines the scan parameter from the registered three-dimensional model.
Abstract:
The invention relates to an imaging system for imaging an object, wherein the imaging system is adapted for scanning the object in accordance with a scan parameter. The imaging system comprises a projection image generation unit (15) for generating a two-dimensional projection image of the object. A model provision unit (16) provides a three-dimensional model of the object, and a registration unit (17) registers the three-dimensional model with the two-dimensional project ion image. A scan parameter determination unit (18) determines the scan parameter from the registered three-dimensional model.