Method for recording magnetic resonance data and magnetic resonance device

Patent metadata

Field	Value
Publication number	US-10254372-B2
Application number	US-201615260535-A
Country	US
Kind code	B2
Filing date	Sep 9, 2016
Priority date	Sep 21, 2015
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

A method is provided for recording, with a magnetic resonance device, magnetic resonance data of a target region of a patient moved by their breathing. An optical camera arranged in a bore of the magnetic resonance device directed onto the patient is used. Image data of the patient recorded by the camera before and/or during the recording of the magnetic resonance data is evaluated to form breathing information describing the breathing state and the breathing information is used for triggering and/or movement correction and/or assessment of a process in which a patient holds their breath.

First claim

The invention claimed is:

1. A method for recording, with a magnetic resonance device, magnetic resonance data of a target region of a patient moved by breathing of the patient, the method comprising:
recording image data of the patient using an optical camera arranged in a bore of the magnetic resonance device directed onto the patient;
evaluating the image data of the patient before, during, or before and during the recording of the magnetic resonance data to form breathing information describing a breathing state, wherein the breathing information is established by a localization and following of an object arranged on a surface of the patient moved by the breathing; and
using the breathing information for triggering a recording of magnetic resonance data, a movement correction, an assessment of a process in which the patient holds their breath, or a combination thereof.

2. The method of claim 1 , wherein the object is a local coil.

3. The method of claim 2 , wherein the camera is a three-dimensional camera, and
wherein a distance from the camera to the object is evaluated over time for establishing the breathing information.

4. The method of claim 3 , wherein the breathing information is used for triggering the recording of at least a part of the magnetic resonance data.

5. The method of claim 4 , wherein, when an interrupted breath-holding process is identified during the recording of the magnetic resonance data, the method further comprises:
outputting a message to an operator, marking and/or discarding magnetic resonance data recorded during the interrupted breath-holding process, or a combination thereof.

6. The method of claim 5 , further comprising:
storing the breathing information present during the interrupted breath-holding process; and
including a comparison to current breathing information when a same or a comparable breathing state is restored.

7. The method of claim 1 , wherein the camera is a three-dimensional camera, and
wherein a distance from the camera to the object is evaluated over time for establishing the breathing information.

8. The method of claim 1 , wherein, when an interrupted breath-holding process is identified during the recording of the magnetic resonance data, the method further comprises:
outputting a message to an operator, marking and/or discarding magnetic resonance data recorded during the interruption of the breath-holding, or a combination thereof.

9. The method of claim 1 , wherein the breathing information is used for triggering the recording of at least a part of the magnetic resonance data.

10. The method of claim 9 , wherein the part of the magnetic resonance data is a slice.

11. The method of claim 1 , wherein, when an interrupted breath-holding process is established during the recording of the magnetic resonance data, the method further comprises:
storing the breathing information present during the interrupted breath-holding process; and
including a comparison to current breathing information when a same or a comparable breathing state is restored.

12. A method for recording, with a magnetic resonance device, magnetic resonance data of a target region of a patient moved by breathing of the patient, the method comprising:
recording image data of the patient using an optical camera arranged in a bore of the magnetic resonance device directed onto the patient;
evaluating the image data of the patient before, during, or before and during the recording of the magnetic resonance data to form breathing information describing a breathing state;
using the breathing information for triggering a recording of magnetic resonance data, a movement correction, an assessment of a process in which the patient holds their breath, or a combination thereof;
identifying an interrupted breath-holding process during the recording of the magnetic resonance data; and
outputting a message to an operator, marking and/or discarding magnetic resonance data recorded during the interrupted breath-holding process, or a combination thereof.

13. The method of claim 12 , further comprising:
storing the breathing information present during the interrupted breath-holding process; and
including a comparison to current breathing information when a same or a comparable breathing state is restored.

14. The method of claim 12 , further comprising:
remeasuring the marked and/or the discarded magnetic resonance data in a triggered fashion fully automatically after restoration of the breath holding.

15. The method of claim 14 , further comprising:
storing the breathing information present during the interrupted breath-holding process; and
including a comparison to current breathing information when a same or a comparable breathing state is restored.

16. A magnetic resonance device comprising:
a bore having an optical camera arranged in the bore;
a control device having an image processing unit, wherein, the control device is configured to, with the bore, cause the magnetic resonance device to at least perform:
record image data of a patient using the optical camera arranged in the bore directed onto the patient,
evaluate the image data of the patient before, during, or before and during a recording of magnetic resonance data to form breathing information describing a breathing state of the patient;
use the breathing information for triggering a recording of magnetic resonance data, a movement correction, an assessment of a process in which the patient holds their breath, or a combination thereof;
identify an interrupted breath-holding process during the recording of the magnetic resonance data; and
output a message to an operator, mark and/or discard magnetic resonance data recorded during the interrupted breath-holding process, or a combination thereof.

Assignees

• Greiser Andreas
• Kroell Maria
• Paul Dominik
• Schroeter Steffen
• Thoene Jens
• Siemens Healthcare Gmbh

Inventors

• Greiser Andreas
• Kröll Maria
• Paul Dominik
• Schröter Steffen
• Thöne Jens

Classifications

• G01R33/341

  comprising surface coils · CPC title

• G01R33/283

  Intercom or optical viewing arrangements, structurally associated with NMR apparatus · CPC title

• G01R33/5673 Primary

  Gating or triggering based on a physiological signal other than an MR signal, e.g. ECG gating or motion monitoring using optical systems for monitoring the motion of a fiducial marker · CPC title

• G01R33/546

  Interface between the MR system and the user, e.g. for controlling the operation of the MR system or for the design of pulse sequences · CPC title