| 摘要 |
It is described a model-based estimation of the current contraction status (S) of a periodically contracting object such as a beating heart. Thereby, a characteristic feature that is directly related to the contraction status (S) is extracted from a current image (340) and subsequently compared to a model that gives the contraction status (S) of the heart in dependence on the characteristic feature. Thereby, an appropriate patient-individual model may be obtained e.g. from an ECG gated pre-interventional data set. A potential characteristic feature is the distance between two arbitrary reference catheters (341a, 341b, 342a, 342b) that are usually in a fix known standard position during a whole electrophysiological intervention. The knowledge about the current contraction status may be used to combine the current image with other images depicting the object in the same contraction status. Thereby, image elements, which depend on the contraction status and which are not viewable in the current image, may be made visible by overlaying different images depicting the object in one and the same contraction status. |
