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Compared to single plane angiographic systems, biplane systems offer the possibility of a merged evaluation of the two x-ray projections. A computer program was developed that allows the assessment of enddiastolic and endsystolic volumes and frame-by-frame analysis of the left and right ventricle based on representing the biplane angiograms as optimal paired images. Optimal pairing means the magnifications are fitted, resulting in identical scales for objects located in the isocenter of the gantry; furthermore the images are rotated such that paired epipolar lines in both planes represent the same cross section of a centered object. The improved border tracing is proved by comparing the vertical extents from the lateral and frontal projection of the right ventricle. The standard deviation of the differences were significantly (p &lt; 0.01) reduced as compared to the generally used unpaired evaluation.

BIPLANE ANGIOGRAPHISCHE VOLUMETRIE DER RECHTEN UND LINKEN HERZKAMMER MIT OPTIMALER BILDPAARUNG