Method for recording diagnostic measurement data of a knee of an examination object in knee imaging by a magnetic resonance device

Patent metadata

Field	Value
Publication number	US-12038490-B2
Application number	US-201817272759-A
Country	US
Kind code	B2
Filing date	Nov 1, 2018
Priority date	Sep 28, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

An embodiment of a method for recording diagnostic measurement data of a knee of an examination object in knee imaging by a magnetic resonance device, includes performing an overview scan of the knee of the examination object, wherein overview measurement data is acquired in the overview scan, and performing diagnostic scans of the knee of the examination object based on the acquired overview measurement data, wherein two-dimensional diagnostic measurement data is acquired in the diagnostic scans.

First claim

The invention claimed is:

1. A method for recording diagnostic measurement data of a knee of an examination object in knee imaging by a magnetic resonance device, the method comprising:
performing an overview scan of the knee of the examination object, wherein overview measurement data is acquired in the overview scan,
performing diagnostic scans of the knee of the examination object based on the acquired overview measurement data, wherein two-dimensional diagnostic measurement data is acquired in the diagnostic scans and a number of diagnostic scans is at least five and at least four of the at least five diagnostic scans have a repetition time of at least five times more than a repetition time of another of the at least five diagnostic scans.

2. The method as claimed in claim 1 , wherein the knee imaging comprises a single interaction of a user.

3. The method as claimed in claim 1 , wherein at least one measurement layer is different in each of the diagnostic scans.

4. The method as claimed in claim 1 , wherein any two diagnostic scans of the diagnostic scans differ in at least contrast or layer orientation.

5. The method as claimed in claim 1 , wherein based on the overview measurement data for the diagnostic scans, parameters and/or adjustments are determined individually for the examination object in an evaluation step.

6. The method as claimed in claim 1 , wherein recording parameters of the diagnostic scans and the overview scan are coordinated in such a way that the knee imaging is concluded within an imaging period of a maximum of 7 minutes.

7. The method as claimed in claim 6 , wherein the examination object only remains in the magnetic resonance device during the imaging period.

8. The method as claimed in claim 1 , wherein each diagnostic scan has a different contrast or a different layer orientation.

9. The method as claimed in claim 1 , wherein at least two diagnostic scans of the diagnostic scans have a contrast with fat suppression.

10. The method as claimed in claim 1 , wherein at least one diagnostic scan of the diagnostic scans comprises use of a local coil unit for radiation of high frequency fields.

11. The method as claimed in claim 10 , wherein the high frequency fields radiated by the local coil unit are circularly polarized.

12. The method as claimed in claim 1 , wherein at least two diagnostic scans of the diagnostic scans are accelerated by a technique combining acceleration within a measurement layer and acceleration perpendicular to the measurement layer.

13. The method as claimed in claim 12 , wherein the acceleration within the measurement layer is achieved by subsampling and parallel imaging.

14. The method as claimed in claim 12 , wherein the acceleration perpendicular to the measurement layer is achieved by simultaneous multislice imaging.

15. The method as claimed in claim 1 , wherein at least two diagnostic scans of the diagnostic scans are accelerated by an acceleration factor of at least 4.

16. A magnetic resonance device comprising a measurement data acquisition unit and a computing unit, wherein the magnetic resonance device is configured to perform the method of claim 1 .

17. A non-transitory computer readable medium, when executed by a programmable computing unit of a magnetic resonance device, configured to cause the magnetic resonance device to perform the method of claim 1 .

18. The method as claimed in claim 1 , wherein at least three of the at least five diagnostic scans have a turbo factor, the turbo factors of the three of the at least five diagnostic scans differs by less than 20 percent.

19. The method as claimed in claim 1 , wherein recording parameters of at least four of the at least five diagnostic scans and the overview scan are coordinated in such a way that the knee imaging is concluded within an imaging period of a maximum of 7 minutes.

20. The method as claimed in claim 1 , wherein recording parameters of the diagnostic scans and the overview scan are coordinated in such a way that the knee imaging is concluded within an imaging period of a maximum of 7 minutes and at least one diagnostic scan of the diagnostic scans comprises use of a local coil unit for radiation of high frequency fields.

21. A method for recording diagnostic measurement data of a knee of an examination object in knee imaging by a magnetic resonance device, the method comprising:
performing an overview scan of the knee of the examination object, wherein overview measurement data is acquired in the overview scan,
performing diagnostic scans of the knee of the examination object based on the acquired overview measurement data, wherein two-dimensional diagnostic measurement data is acquired in the diagnostic scans and a number of diagnostic scans is at least five and at least three of the at least five diagnostic scans have a turbo factor, the turbo factors of the three of the at least five diagnostic scans differs by less than 20 percent.

Assignees

• Siemens Healthineers Ag
• Univ Johns Hopkins

Inventors

• Fritz Jan
• Wang Dingxin
• Raithel Esther
• Beck Thomas
• Carinci Flavio
• Zeller Mario

Classifications

• G01R33/561

  by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences · CPC title

• G01R33/543 Primary

  Control of the operation of the MR system, e.g. setting of acquisition parameters prior to or during MR data acquisition, dynamic shimming, use of one or more scout images for scan plane prescription (G01R33/546 takes precedence) · CPC title

• G01R33/4828 Primary

  Resolving the MR signals of different chemical species, e.g. water-fat imaging · CPC title