Method and device for separate three-dimensional presentation of arteries and veins in a part of body

Abstract

The invention is directed to a method and a device for separate three-dimensional presentation of arteries and/or veins of a vessel system in a part of the body of a vertebrate by a rotation computer tomography. A masking run of the tomograph is undertaken without contrast media around the part of the body. Then two filling runs with contrast media are executed, with the venous phase of vessel contrasting during the first filling run occurring during the arterial phase of vessel contrasting of the second filling run and vice-versa. The data from the first and second filling run is combined into data sets from the arterial or the venous phases of the vessel contrasting of the filling runs. The data of the masking run is subtracted from the combined data sets to obtain final data sets for a three-dimensional presentation of the arterial or the venous vessel system.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained below in greater detail on the basis of practical exemplary embodiments which refer to the enclosed drawings, which are as follows:

FIG. 1 shows the principle of scanning a patient's body in a first embodiment of the invention,

FIG. 2 shows the principle of scanning a patient's body in a second embodiment of the invention, and

FIG. 3 shows the method for determining final data sets from the raw data obtained by scanning.

Claims

1.-16. (canceled)

17. A method for generating a data set of an artery of a vessel system in a part of a body of a vertebrate by a rotation computer tomography, comprising: performing a masking run by the tomograph without an injection of a contrast media around the part of the body;recording a data of the masking run;performing a first filling run by the tomograph with a first injection of the contrast media around the part of the body, the first filling run comprising an arterial phase part and a venous phase part;recording data of an arterial phase of vessel contrasting of the first filling run during the arterial phase part of the first filling run;performing a second filling run by the tomograph with a second injection of the contrast medium around the part of the body, the second filling run comprising an arterial phase part occurring in the venous phase part of the first filling run and a venous phase part occurring in the arterial phase part of the first filling run;recording data of an arterial phase of vessel contrasting of the second filling run during the arterial phase part of the second filling run;combining the data of the arterial phase of vessel contrasting of the first filling run and the data of the arterial phase of vessel contrasting of the second filling run into a combined data set;subtracting the data of the masking run from the combined data set to generate the data set of the artery of the vessel system; andusing the data set of the artery of the vessel system in a humanly perceptible manner.

18. The method as claimed in claim 17, further comprising: recording data of a venous phase of vessel contrasting of the first filling run during the venous phase part of the first filling run,recording data of a venous phase of vessel contrasting of the second filling run during the venous phase part of the second filling run,combining the data of the venous phase of vessel contrasting of the first filling run and the data of the venous phase of vessel contrasting of the second filling run into a further combined data set, andsubtracting the data of the masking run from the further combined data set to generate a data set of a vein of the vessel system.

19. The method as claimed in claim 18, further comprising reconstructing a three-dimensional data set from a data selected from the group consisting of: the data of the masking run, the data of the arterial phase of vessel contrasting of the first filling run, the data of the venous phase of vessel contrasting of the first filling run, the data of the arterial phase of vessel contrasting of the second filling run, the data of the venous phase of vessel contrasting of the second filling run, the combined data set, the further combined data set, the data set of the artery of the vessel system, and the data set of the vein of the vessel system.

20. The method as claimed in claim 17, wherein the part of the body is a cranium of the vertebrate.

21. The method as claimed in claim 17, wherein a plurality of first and second filling runs are performed to obtain data from a plurality of arterial phases of vessel contrasting of the plurality of first and second filling runs and data from a plurality of venous phases of, vessel contrasting of the plurality of first and second filling runs.

22. The method as claimed in claim 17, wherein the rotation computer tomograph is selected from the group consisting of: a rotation x-ray computer tomography, an ultrasound tomography, and a nuclear resonance tomograph.

23. The method as claimed in claim 22, wherein the rotation x-ray computer tomograph is a C-arm angiograph.

24. The method as claimed in claim 17, wherein the first and the second filling runs are performed in a same scanning direction, andwherein the first injection of the contrast medium is injected when the first filling run starts and the second injection of the contrast medium is injected after the second filling run has been performed.

25. The method as claimed in claim 17, wherein the first and the second filling runs are performed in different scanning directions,wherein the first injection of the contrast medium is injected when the first filling run starts and the second injection of the contrast medium is injected when the second filling run starts, andwherein the second filling run starts when the contrast medium in the first filling run has been flushed out of veins of the vessel system.

26. A method for generating a data set of a vein of a vessel system in a part of a body of a vertebrate by a rotation computer tomography, comprising: performing a masking run by the tomograph without an injection of a contrast media around the part of the body;recording a data of the masking run;performing a first filling run by the tomograph with a first injection of the contrast media around the part of the body, the first filling run comprising an arterial phase part and a venous phase part;recording data of a venous phase of vessel contrasting of the first filling run during the venous phase part of the first filling run;performing a second filling run by the tomograph with a second injection of the contrast medium around the part of the body, the second filling run comprising an arterial phase part occurring in the venous phase part of the first filling run and a venous phase part occurring in the arterial phase part of the first filling run;recording data of a venous phase of vessel contrasting of the second filling run during the venous phase part of the second filling run;combining the data of the venous phase of vessel contrasting of the first filling run and the data of the venous phase of vessel contrasting of the second filling run into a combined data set;subtracting the data of the masking run from the combined data set to generate the data set of the vein of the vessel system; andusing the data set of the vein of the vessel system in a humanly perceptible manner.

27. The method as claimed in claim 26, further comprising: recording data of an arterial phase of vessel contrasting of the first filling run during the arterial phase part of the first filling run,recording data of an arterial phase of vessel contrasting of the second filling run during the arterial phase part of the second filling runcombining the data of the arterial phase of vessel contrasting of the first filling run and the data of the arterial phase of vessel contrasting of the second filling run into a further combined data set, andsubtracting the data of the masking run from the further combined data set to generate a data set of an artery of the vessel system.

28. The method as claimed in claim 27, further comprising reconstructing a three-dimensional data set from a data selected from the group consisting of: the data of the masking run, the data of the arterial phase of vessel contrasting of the first filling run, the data of the venous phase of vessel contrasting of the first filling run, the data of the arterial phase of vessel contrasting of the second filling run, the data of the venous phase of vessel contrasting of the second filling run, the combined data set, the further combined data set, the data set of the artery of the vessel system, and the data set of the vein of the vessel system.

29. An apparatus for generating an image data set of an artery of a vessel system in a part of a body of a vertebrate, comprising: a rotation computer tomography that performs: a masking run without an injection of a contrast media around the part of the body to record a data of the masking run,a first filling run with a first injection of the contrast media around the part of the body to record data of an arterial phase of vessel contrasting of the first filling run during an arterial phase part of the first filling run, anda second filling run with a second injection of the contrast media around the part of the body to record data of an arterial phase of vessel contrasting of the second filling run during an arterial phase part of the second filling run; anda computation device that: combines the data of the arterial phase of vessel contrasting of the first filling run and the data of the arterial phase of vessel contrasting of the second filling run into a combined data set, andsubtracts the data of the masking run from the combined data set to generate the image data set of the artery of the vessel system.

30. The apparatus as claimed in claim 29, wherein the rotation computer tomography: records data of a venous phase of vessel contrasting of the first filling run during a venous phase part of the first filling run, andrecords data of a venous phase of vessel contrasting of the second filling run during a venous phase part of the second filling run, andwherein the computation device: combines the data of the venous phase of vessel contrasting of the first filling run and the data of the venous phase of vessel contrasting of the second filling run into a further combined data set, andsubtracts the data of the masking run from the further combined data set to generate an image data set of a vein of the vessel system.

31. The apparatus as claimed in claim 30, further comprising a data memory that stores a data selected from the group consisting of: the data of the masking run, the data of the arterial phase of vessel contrasting of the first filling run, the data of the venous phase of vessel contrasting of the first filling run, the data of the arterial phase of vessel contrasting of the second filling run, the data of the venous phase of vessel contrasting of the second filling run, the combined data set, the further combined data set, the image data set of the artery of the vessel system, and the image data set of the vein of the vessel system.

32. The apparatus as claimed in claim 30, wherein the arterial phase part of the second filling run occurs in the venous phase part of the first filling run and the venous phase part of the second filling run occurs in the arterial phase part of the first filling run.

33. An apparatus for generating an image data set of a vein of a vessel system in a part of a body of a vertebrate, comprising: a rotation computer tomography that performs: a masking run without an injection of a contrast media around the part of the body to record a data of the masking run,a first filling run with a first injection of the contrast media around the part of the body to record data of a venous phase of vessel contrasting of the first filling run during a venous phase part of the first filling run, anda second filling run with a second injection of the contrast media around the part of the body to record data of a venous phase of vessel contrasting of the second filling run during a venous phase part of the second filling run; anda computation device that: combines the data of the venous phase of vessel contrasting of the first filling run and the data of the venous phase of vessel contrasting of the second filling run into a combined data set, andsubtracts the data of the masking run from the combined data set to generate the image data set of the vein of the vessel system.

34. The apparatus as claimed in claim 33, wherein the rotation computer tomography: records data of an arterial phase of vessel contrasting of the first filling run during an arterial phase part of the first filling run, andrecords data of an arterial phase of vessel contrasting of the second filling run during an arterial phase part of the second filling run, andwherein the computation device: combines the data of the arterial phase of vessel contrasting of the first filling run and the data of the arterial phase of vessel contrasting of the second filling run into a further combined data set, andsubtracts the data of the masking run from the further combined data set to generate an image data set of a vein of the vessel system.

35. The apparatus as claimed in claim 34, further comprising a data memory that stores a data selected from the group consisting of: the data of the masking run, the data of the arterial phase of vessel contrasting of the first filling run, the data of the venous phase of vessel contrasting of the first filling run, the data of the arterial phase of vessel contrasting of the second filling run, the data of the venous phase of vessel contrasting of the second filling run, the combined data set, the further combined data set, the image data set of the artery of the vessel system, and the image data set of the vein of the vessel system.

36. The apparatus as claimed in claim 34, wherein the arterial phase part of the second filling run occurs in the venous phase part of the first filling run and the venous phase part of the second filling run occurs in the arterial phase part of the first filling run.