Measurement of radio frequency excitation pulses

Patent metadata

Field	Value
Publication number	US-9864035-B2
Application number	US-201414481596-A
Country	US
Kind code	B2
Filing date	Sep 9, 2014
Priority date	Sep 13, 2013
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

Methods are provided for measurement of RF excitation pulses by a magnetic resonance device. The methods include the following acts: (1) sending of an RF excitation pulse by a radio-frequency system of the magnetic resonance device, (2) triggering of a receive event for capturing the RF excitation pulse by the control device of the magnetic resonance device, and (3) capturing of the sent RF excitation pulse in the form of excitation data by the radio frequency system. The excitation data may be used for checking process execution sequences.

First claim

The invention claimed is:

1. A method for measurement of radio frequency (RF) excitation pulses by a magnetic resonance device, the method comprising:
sending a RF excitation pulse by a receive module of a radio-frequency system of the magnetic resonance device;
triggering a receive event for capturing the RF excitation pulse;
capturing the sent RF excitation pulse in a form of excitation data by the receive module of the radio-frequency system; and
capturing an echo signal resulting from the RF excitation pulse in a form of echo data by the receive module of the radio-frequency system.

2. The method as claimed in claim 1 , wherein the excitation data is detected by at least one directional coupler or at least one pickup loop.

3. The method as claimed in claim 2 , further comprising:
checking process execution sequences with the excitation data.

4. The method as claimed in claim 1 , wherein the excitation data and the echo data are provided with a time stamp.

5. The method as claimed in claim 1 , wherein the excitation data and the echo data are stored in a form of a raw dataset.

6. The method as claimed in claim 1 , wherein a temporal switching between the capture of the excitation data and the capture of the echo data is realized by a switching matrix.

7. The method as claimed in claim 6 , wherein the excitation data and the echo data are stored in a form of a raw dataset.

8. The method as claimed in claim 6 , wherein the excitation data and the echo data are provided with a time stamp.

9. The method as claimed in claim 8 , wherein the excitation data and the echo data are stored in a form of a raw dataset.

10. The method as claimed in claim 9 , further comprising:
checking process execution sequences with the excitation data.

11. The method as claimed in claim 10 , wherein the excitation data is output at an output unit of the magnetic resonance device for monitoring of the excitation data.

12. The method as claimed in claim 1 , further comprising:
checking process execution sequences with the excitation data.

13. The method as claimed in claim 1 , wherein the excitation data is output at an output unit of the magnetic resonance device for monitoring of the excitation data.

14. A magnetic resonance device for measurement of radio-frequency (RF) excitation pulses, the magnetic resonance device comprising:
a radio-frequency system having a receive module;
a control device; and
an output unit,
wherein the magnetic resonance device is configured to: (1) send a RF excitation pulse by the receive module of the radio-frequency system; (2) trigger a receive event for capturing the RF excitation pulse; (3) capture the sent RF excitation pulse in a form of excitation data by the receive module of the radio frequency system; and (4) capture an echo signal resulting from the RF excitation pulse in a form of echo data by the receive module of the radio-frequency system.

15. An apparatus comprising:
at least one processor; and
at least one memory including computer program code for one or more programs; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least perform:
send a radio-frequency (RF) excitation pulse by a receive module of a radio-frequency system of
a magnetic resonance device;
trigger a receive event for capturing the RF excitation pulse;
capture the sent RF excitation pulse in a form of excitation data by the receive module of the radio frequency system; and
capture an echo signal resulting from the RF excitation pulse in a form of echo data by the receive module of the radio-frequency system.

16. A computer program product including one or more non-transitory computer-readable storage media having stored thereon:
instructions executable by one or more processors of a computing system,
wherein execution of the instructions causes the computing system to perform operations for measuring radio frequency excitation pulses by a magnetic resonance device, the instructions comprising:
sending a radio-frequency (RF) excitation pulse by a receive module of a radio-frequency system of the magnetic resonance device;
triggering a receive event for capturing the RF excitation pulse; and
capturing the sent RF excitation pulse in a form of excitation data by the receive module of the radio frequency system; and
capturing an echo signal resulting from the RF excitation pulse in a form of echo data by the receive module of the radio-frequency system.

Assignees

• Adolf Holger
• Benner Thomas
• Fautz Hans-Peter
• Fontius Jörg Ulrich
• Gumbrecht Rene
• Schmitt Franz
• Siemens Ag

Inventors

• Adolf Holger
• Benner Thomas
• Fautz Hans-Peter
• Fontius Jörg Ulrich
• Gumbrecht Rene
• Schmitt Franz

Classifications

• 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

• G01R33/5659

  caused by a distortion of the RF magnetic field, e.g. spatial inhomogeneities of the RF magnetic field (G01R33/56509, G01R33/56518, G01R33/56536 take precedence) · CPC title

• G01R33/36 Primary

  Electrical details, e.g. matching or coupling of the coil to the receiver · CPC title

• A61B5/055 Primary

  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging · CPC title