Patent Number: 
Section: claims

1. A method for taking tomograms of a patient's beating heart with the aid of a computed tomography unit, the method comprising:moving at least one focus, with an oppositely situated detector, around the patient to scan the beating heart;recording detector data, output by the detector and representing an attenuation of the beams emanating from the at least one focus, together with indirect or direct spatial orientation data of the beams;recording ECG signals of the beating heart, the detector data and ECG signals being stored in a temporally correlated fashion; andusing, to reconstruct the tomograms, detector data that originates from a selected cycle area of a cardiac cycle of the heart, the cycle area being selected automatically and individually per cycle for at least one cardiac cycle by pattern recognition,wherein the using includesbefore the automatic selection of the cycle area is carried out, a typical signal profile of the current ECG in at least one of the area and an adjacent one is determined manually, and the typical profile is subsequently automatically detected again in at least one cardiac cycle to which the determination of the desired area is oriented for the reconstruction. 2. The method as claimed in claim 1, wherein the profile of a P wave is used as typical signal profile. 3. The method as claimed in claim 2, further comprising:manually marking a time sector in a cycle in a visualized ECG, the profile, located in the sector, of the EGG being adopted as typical signal profile of a P wave (template Sp);subsequently automatically comparing the typical signal profile Sp with the signal profile Ep of further cycles of the EGG via a convolution function Pl(t) that corresponds to a successively temporally offset convolution;determining a greatest maximum per cycle in the temporal profile of the convolution function Pl(t), the actual position of the P wave per cycle, and thus the temporal end of the rest phase of the atrium of the heart per cycle, being determined therefrom. 4. The method as claimed in claim 2, wherein the cycle area whose data are used for the reconstruction precedes the detected area of the P wave. 5. The method as claimed in claim 2, wherein a neural network is used to compare the contour of the profile of the EGG signal with a prescribed contour. 6. The method as claimed in claim 2, wherein, for a cycle in which no P wave position is to be determined, the cycle area considered is determined by at least one known method. 7. The method as claimed in claim 3, wherein the successively temporally offset convolution is performed by calculating            P      1        ⁡          (      t      )        =                    S        p            ⊗                        E          p                ⁡                  (          t          )                      =                            1          N                ·                              ∫                                          -                                  (                                                            tt                      s                                        +                                          tt                      e                                                        )                                            /              2                                                      (                                                      tt                    s                                    +                                      tt                    e                                                  )                            /              2                                ⁢                                                    ⅆ                τ                            ·                              h                c                            ·                                                S                  p                                ⁡                                  (                  τ                  )                                            ·                                                E                  p                                ⁡                                  (                                      t                    -                    τ                                    )                                                      ⁢            t                              ∈              p        1            where:  N  =            ∫                        -                      (                                          tt                s                            +                              tt                e                                      )                          /        2                              (                                    tt              s                        +                          tt              e                                )                /        2              ⁢                  ⅆ        τ            ·                                    S            p                    ⁡                      (            τ            )                          2            and ttS is the start and tte is the end of a cycle interval in which the pattern to be determined is presumed, τ is the integration variable in the time interval considered, t is the time, and pl is the cycle considered. 8. The method as claimed in claim 7, wherein the convolution function Pl(t) is normalized. 9. The method as claimed in claim 8, wherein the cycle area whose data are used for the reconstruction precedes the detected area of the P wave. 10. The method as claimed in claim 7, wherein the cycle area whose data are used for the reconstruction precedes the detected area of the P wave. 11. The method as claimed in claim 3, wherein the convolution function Pl(t) is normalized. 12. The method as claimed in claim 11, wherein the cycle area whose data are used for the reconstruction precedes the detected area of the P wave. 13. The method as claimed in claim 3, wherein the cycle area whose data are used for the reconstruction precedes the detected area of the P wave. 14. The method as claimed in claim 3, wherein a neural network is used to compare the contour of the profile of the EGG signal with a prescribed contour. 15. The method as claimed in claim 3, wherein, for a cycle in which no P wave position is to be determined, the cycle area considered is determined by at least one known method. 16. The method as claimed in claim 1, wherein a neural network is used to compare the contour of the profile of the ECG signal with a prescribed contour. 17. The method as claimed in claim 1, wherein, for a cycle in which no P wave position is to be determined, the cycle area considered is determined by at least one known method. 18. The method as claimed in claim 1, wherein the detector is a multirow detector. 19. A computer readable medium, including executable instructions, which when executed by a computer, cause the computer to perform the method of claim 1.