Creation of computer tomography photograph of heart of a patient, comprises scanning the patient using X-ray tube, determining cycle phase of the heart using pulse-correlated clock signal and determining attenuation of the X-ray

摘要

The attenuation of the X-ray is determined by using multi-line detector. The detector exit data is displayed at track and control units. The scanning voxel is divided into three-dimensional voxel and each voxel value and rays are produced from the detector exit data, which are reconstructed. A time stamp is assigned to determine the heart phase periods and sum of the scanning voxel segment is corresponds to integral multiple of 180[deg]. The incomplete voxel values (V3-V6) are converted into complete voxel values based on the heart cycles and the detector data produced by the X-ray tubes. The multiple voxel values are calculated in groups corresponds to an axial cut through which patient/heart is arranged. The heart phase periods of complete voxel values are associated with heart phase periods (T1, T2) of incomplete voxel values. The unique reconstruction of incomplete voxel values of the heart cycle phase period is carried out over the total temporal and local scan and the heart phase cycle period is less than the total heart cycle. The reconstruction of incomplete voxel values is used as equally large segments from the detector data. The scanning of the patient is a spiral and sequential scanning. The pulse-correlated clock signal is used as electrocardiogram derivative and pressure pulse derivative. An independent claim is included for a computer tomography device.