Abstract:
The invention relates to automatically adjusting an acquisition protocol for dynamic medical imaging, such as dynamic CT, MR1 or PET imaging. The protocols are adjusted based on anatomic and dynamic models (10, 12, 14) which are individualized or fitted to each patient based on a scout scan (6, 8). The adjustment can compensate for changes in the patient due to patient motion (e.g. breathing or heartbeat) or flow of contrast or tracing agent during the sequence. This ensures that changes in the reconstructed images are indicative of pathological changes in the patient and not caused by patient motion or changes in scanning parameters or timing. The dynamic model can be a motion model (12) used to predict the motion of anatomic/physiologic features, typically organs, during scanning, or a haemodynamic model (14) used to predict flow of the contrast agent allowing for precise timing of the scanning sequence.
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:
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:
A method for creating a model of a part of the anatomy from the scan data of several subjects is described. The method comprises the steps of collecting scan data; applying a feature detector to the scan data; converted the output of the feature detector into a common reference system; and accumulating the converted data to generate the model. It is therefore possible for the method to generate a model from the scan data of several subjects automatically. The method may also include an optional step of receiving user input to select which of the accumulated data should be included in the final model. This user input requires much less effort than manual contouring and is substantially independent of the number of subjects used to create the model.
Abstract:
The present invention aims at improving the point-based elastic registration paradigm. According to the present invention, a force field, for example, with Gaussian-shaped forces, is applied at several points to the image to be deformed. In this case, no landmark correspondences are required and the optimal positions of the force application point are found automatically, which minimizes the différence between the source and target image. Advantageously, this may allow to control a local influence of individual control points.