Method for generating and displaying examination images and associated ultrasound catheter

• US 20070015996A1
• Filed: 05/12/2006
• Published: 01/18/2007
• Est. Priority Date: 05/13/2005
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Camus, Estelle, Redel, Thomas, Kleen, Martin
• Application Number:
  US11/433,710
• Publication Number:
  US 20070015996A1
• Time in Patent Office: Days
• US Class Current: 600/407
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/33 specially adapted for cooperation with other devices
• CPC Class Codes: A61B 6/032 Transmission computed tomography [CT]
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/504 for diagnosis of blood vessels, e.g. by angiography
• CPC Class Codes: A61B 6/507 for determination of haemodynamic parameters, e.g. perfusion CT
• CPC Class Codes: A61B 6/5247 combining images from an ionising-radiation diagnostic technique and a non-ionising radiation diagnostic technique, e.g. X-ray and ultrasound
• CPC Class Codes: A61B 8/06 Measuring blood flow measuring volume flow in general G01F, e.g. G01F1/66, G01F1/72; measuring speed of fluids in general G01P5/00
• CPC Class Codes: A61B 8/0808 for diagnosis of the brain
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/13 Tomography A61B8/10, A61B8/12 take precedence; tomography for radiation diagnosis A61B6/02
• CPC Class Codes: A61B 8/4245 involving determining the position of the probe, e.g. with respect to an external reference frame or to the patient
• CPC Class Codes: A61B 8/4254 using sensors mounted on the probe
• CPC Class Codes: A61B 8/483 involving the acquisition of a 3D volume of data
• CPC Class Codes: A61B 8/5238 for combining image data of patient, e.g. merging several images from different acquisition modes into one image for image registration algorithms G06T7/30

Abstract

The invention relates to a method for generating and displaying examination images of a vessel of a patient, comprising the following steps: a) acquiring examination data of the vessel using a first imaging method such as computer tomography, magnetic resonance, or angiography, in particular 3D rotational angiography, b) creating a 3D data set on the basis of the acquired examination data of the first imaging method, c) acquiring examination data and the position of an ultrasound catheter inserted into the vessel, d) creating a 3D data set on the basis of the acquired ultrasound catheter examination and position data as a second imaging method, e) registering the 3D data sets of the first and second imaging method, and f) displaying the registered 3D data sets.

Claims

1-12. -12. (canceled)

13. A method for generating and displaying an examination image of a vessel of a patient, comprising:

inserting an ultrasound catheter into the vessel of the patient which is to be examined;

acquiring a first examination data of the vessel of the patient using a first imaging method;

creating a first 3D data set based on the first examination data using the first imaging method;

acquiring an ultrasound examination data of the vessel of the patient using ultrasound as a second imaging method and acquiring a position of the ultrasound catheter;

creating a second 3D data set based on the ultrasound examination data and the position of the ultrasound catheter;

registering the first and second 3D data sets; and

displaying the registered 3D data sets.

14. The method as claimed in claim 13, wherein the registration of the first and second 3D data sets is performed by matching the first and second 3D data sets so that the first and second 3D data sets are jointly displayed.

15. The method as claimed in claim 13, wherein the first image method is selected from the group consisting of:

computer tomography, magnetic resonance, or angiography.

16. The method as claimed in claim 15, wherein the angiography is a 3D rotational angiography.

17. The method as claimed in claim 13, wherein an electrocardiogram of the patient is taken prior to displaying the registered 3D data sets.

18. The method as claimed in claim 17, wherein the ultrasound examination data is correlated with the electrocardiogram data.

19. The method as claimed in claim 17, wherein the ultrasound examination data is displayed as a same phase position in a cardiac cycle as detected by the electrocardiogram.

20. The method as claimed in claim 13, wherein the ultrasound examination data is obtained by an ultrasound Doppler method.

21. The method as claimed in claim 13, wherein the ultrasound catheter has a position sensor for three-dimensionally determining the position of the ultrasound catheter.

22. The method as claimed in claim 13, wherein the ultrasound catheter has an x-ray marker.

23. The method as claimed in claim 22, wherein the x-ray marker is an angiographic or magnetic resonance marker.

24. The method as claimed in claim 13, wherein the first 3D data set which contains information of a blood vessel anatomy using the first imaging method is displayed transparently.

25. The method as claimed in claim 13, wherein the second 3D data set which contains a blood flow rate in the vessel using the second imaging method is displayed in color.

26. An ultrasound catheter, comprising:

a position sensor attached to the ultrasound catheter for three-dimensionally determining a position of the ultrasound catheter; and

an ultrasound sensor attached to the ultrasound catheter, the ultrasound sensor having an x-ray marker which is visible during an image recording.

27. The ultrasound catheter as claimed in claim 26, wherein the x-ray marker is an angiographic or magnetic resonance marker that is spherically or annularly shaped.

28. The ultrasound catheter as claimed in claim 27, wherein a plurality of spherically shaped x-ray markers are distributed circumferentially on the ultrasound catheter.

29. The ultrasound catheter as claimed in claim 27, wherein a plurality of annularly shaped x-ray markers are distributed on the ultrasound catheter.

30. The ultrasound catheter as claimed in claim 29, wherein two annularly shaped x-ray markers are distributed on the ultrasound catheter.

31. A device for generating and displaying an examination image of a vessel of a patient, comprising:

an ultrasound catheter inserted into the vessel of the patient which is to be examined;

a first image diagnostic device for generating a first 3D data set of the vessel of the patient;

an ultrasound device as a second image diagnostic device for generating an ultrasound examination data of the vessel of the patient;

a calculator for creating a second 3D data set based on the ultrasound examination data and a position of the ultrasound catheter;

a computing device for superimposing the second 3D data set on the first 3D data set; and

a display device for displaying the superimposed 3D data sets.

32. The device as claimed in claim 31, wherein the first image diagnostic device is selected from the group consisting of:

computer tomography, magnetic resonance, or angiography.