Gesture-controlled MR imaging system and method

Patent metadata

Field	Value
Publication number	US-10180469-B2
Application number	US-201514924843-A
Country	US
Kind code	B2
Filing date	Oct 28, 2015
Priority date	Oct 28, 2015
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

A magnetic resonance imaging system and method are provided that include user control of certain functions using physical gestures, such as hand motions or the like. The gesture control aspects can include one or more cameras, and a processor configured to detect and recognize gestures corresponding to predetermined commands and to provide signals to execute the commands. A verification switch, such as a foot switch, can be included to improve safety and reliability of the gesture control aspects. This switch can be used to activate the gesture detection aspects and/or to confirm a recognized gesture command prior to its execution.

First claim

What is claimed is:

1. An MR imaging system that provides improved user control of certain system functions, comprising:
an MR imaging arrangement configured to generate magnetic fields, generate RF pulse sequences, detect RF signals, and generate images based on such detected RF signals; and
a gesture-based control arrangement comprising at least one camera and a switch,
wherein the gesture-based control arrangement is configured to detect at least one gesture performed by a user, and to execute at least one predetermined command based on recognition of the at least one gesture, and
wherein at least one of the detection of the at least one gesture and the execution of the at least one command is based on an activation of the switch, wherein the switch is at least one of a mechanical switch, a pneumatic switch, or an electrical switch.

2. The MR imaging system of claim 1 , wherein the gesture-based control arrangement comprises a plurality of cameras.

3. The MR imaging system of claim 1 , wherein the switch is an inductive switch.

4. The MR imaging system of claim 1 , further comprising at least one emitter of electromagnetic energy that is configured to be affixed to the user, wherein the at least one camera is configured to detect the electromagnetic energy to facilitate the detection of the at least one gesture.

5. The MR imaging system of claim 4 , wherein the electromagnetic energy comprises at least one of infrared light or near-infrared light.

6. The MR imaging system of claim 1 , further comprising:
at least one emitter of electromagnetic energy configured to direct electromagnetic energy toward the user, and
at least one reflective arrangement configured to be affixed to the user,
wherein the at least one camera is configured to detect the electromagnetic energy after it is reflected from the at least one reflective arrangement to facilitate the detection of the at least one gesture.

7. The MR imaging system of claim 6 , wherein the electromagnetic energy comprises at least one of infrared light or near-infrared light.

8. The MR imaging system of claim 1 , wherein the at least one switch is configured to activate the at least one camera to detect the at least one gesture within a particular time interval following the activation of the switch.

9. The MR imaging system of claim 1 , wherein the MR imaging system is configured to execute the at least one predetermined command based on the recognition of the at least one gesture only after the switch is activated.

10. The MR imaging system of claim 1 , further comprising at least one display arrangement that is configured to display the at least one predetermined command based on the recognition of the at least one gesture, wherein the system is configured to execute the displayed command when the switch is activated.

11. The MR imaging system of claim 1 , wherein the at least one predetermined command comprises at least one of starting an imaging sequence, terminating an imaging sequence, changing a parameter associated with an imaging sequence, and changing an image displayed on a display arrangement.

12. A method for controlling an MR imaging system using gestures, comprising:
providing a gesture-based control arrangement in communication with the MR imaging system, wherein the gesture-based control arrangement comprises at least one camera and a switch,
configuring the gesture-based control arrangement to detect at least one gesture performed by a user, and to execute at least one predetermined command based on recognition of the at least one gesture,
wherein the execution of the at least one command is based on an activation of the switch, wherein the switch is at least one of a mechanical switch, a pneumatic switch, or an electrical switch.

13. The method of claim 12 , further comprising providing at least one emitter of electromagnetic energy that is configured to be affixed to the user, wherein the at least one camera is configured to detect the electromagnetic energy to facilitate the detection of the at least one gesture.

14. The method of claim 13 , wherein the electromagnetic energy comprises at least one of infrared light or near-infrared light.

15. The method of claim 12 , further comprising:
directing electromagnetic energy toward the user, and
providing at least one reflective arrangement configured to be affixed to the user,
wherein the at least one camera is configured to detect the electromagnetic energy after it is reflected from the at least one reflective arrangement to facilitate the detection of the at least one gesture.

16. The method of claim 15 , wherein the electromagnetic energy comprises at least one of infrared light or near-infrared light.

17. The method of claim 12 , wherein the at least one switch is configured to activate the at least one camera to detect the at least one gesture within a particular time interval following the activation of the switch.

18. The method of claim 12 , wherein the MR imaging system is configured to execute the at least one predetermined command based on the recognition of the at least one gesture only after the switch is activated.

19. The method of claim 12 , further comprising providing at least one display arrangement that is configured to display the at least one predetermined command based on the recognition of the at least one gesture, wherein the system is configured to execute the displayed command when the switch is activated.

20. The MR imaging system of claim 1 , wherein the at least one predetermined command comprises at least one of starting an imaging sequence, terminating an imaging sequence, changing a parameter associated with an imaging sequence, and changing an image displayed on a display arrangement.

Assignees

• Siemens Healthcare Gmbh
• Univ Johns Hopkins
• Univ Johns Hopkins

Inventors

• Hengerer Arne
• Rothgang Eva
• Lauer Lars
• Lewin Jonathan
• Gilson Wesley David
• Fritz Jan
• Weiss Clifford R
• Macura Katarzyna J
• Bottomley Paul A

Classifications

• G01R33/283 Primary

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

• G06F3/017

  Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883) · 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

• G06K9/00355

  Physics · mapped topic

• G06V40/28

  Recognition of hand or arm movements, e.g. recognition of deaf sign language (static hand signs G06V40/113) · CPC title