Determining a Respiratory Rate of a Living Being

• US 20150065857A1
• Filed: 08/30/2014
• Published: 03/05/2015
• Est. Priority Date: 08/30/2013
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Biber, Stephan, Wiehl, Michael
• Application Number:
  US14/474,136
• Publication Number:
  US 20150065857A1
• Time in Patent Office: Days
• US Class Current: 600/411
• CPC Class Codes: A61B 5/0507 using microwaves or terahertz waves
• CPC Class Codes: A61B 5/055 involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/113 occurring during breathing
• CPC Class Codes: A61B 5/1135 by monitoring thoracic expansion
• CPC Class Codes: A61B 5/725 using specific filters therefor, e.g. Kalman or adaptive filters A61B5/316 take precedence

Abstract

A method for determining a respiratory rate of a living being includes emitting a radio signal using a radio transmitter arranged on the living being. The emitted radio signal is acquired, and the respiratory rate is determined based on the acquired radio signal.

Claims

1. A method for determining a respiratory rate of a living being, the method comprising:

emitting, by a radio transmitter or a radio transmitter element, a radio signal arranged on the living being and acquiring the emitted radio signal, emitting the radio signal and acquiring, by a radio receiver or a radio reception element arranged on the living being, the emitted radio signal, or a combination thereof; and

determining the respiratory rate based on the acquired radio signal.

2. The method of claim 1, wherein determining the respiratory rate comprises using at least one amplitude of the acquired radio signal, at least one frequency of the acquired radio signal, at least one phase of the acquired radio signal, or any combination thereof.

3. The method of claim 1, wherein determining the respiratory rate comprises using a change in the radio signal.

4. The method of claim 3, wherein using the change in the radio signal comprises using a change in an amplitude of the acquired radio signal, a change in a frequency of the acquired radio signal, a change in a phase of the acquired radio signal, or any combination thereof.

5. The method of claim 1, wherein the acquired radio signal is initially subjected to frequency filtering, and the frequency-filtered radio signal is used for determining the respiratory rate.

6. The method of claim 5, wherein the frequency filtering is low-pass filtering.

7. The method of claim 1, wherein the method is carried out when operating a magnetic resonance imaging device, and

wherein determining the respiratory rate comprises determining the respiratory rate of the living being, which is situated in/on the magnetic resonance imaging device.

8. The method of claim 1, wherein the method is carried out when operating a magnetic resonance imaging device with a reception coil, and

wherein the method further comprises transmitting a message signal received by the reception coil to a remaining part of the magnetic resonance imaging device by the radio signal.

9. A respiratory rate determination system for determining a respiratory rate of a living being, the respiratory rate determination system comprising:

a radio transmitter arrangeable on the living being; and

a radio acquisition apparatus configured for acquiring a radio signal emitted by the radio transmitter, a radio receiver or a radio reception element arrangeable on the living being, or a combination thereof,

wherein the radio acquisition apparatus is configured to acquire at least one variable of the acquired radio signal and to determine the respiratory rate of the living being depending on the at least one variable.

10. The respiratory rate determination system of claim 9, wherein the at least one variable comprises at least one frequency, at least one amplitude, at least one phase, or any combination thereof.

11. The respiratory rate determination system of claim 9, wherein the radio acquisition apparatus comprises at least one frequency filter.

12. The respiratory rate determination system of claim 11, wherein the at least one frequency filter comprises a low-pass filter.

13. The respiratory rate determination system of claim 9, wherein the radio acquisition apparatus comprises at least one power detector, at least one frequency detector, at least one phase detector, or any combination thereof.

14. A magnetic resonance imaging device comprising:

a respiratory rate determination system for determining a respiratory rate of a living being, the respiratory rate determination system comprising;

a radio transmitter arrangeable on the living being; and

a radio acquisition apparatus configured for acquiring a radio signal emitted by the radio transmitter, a radio receiver or a radio reception element arrangeable on the living being, or a combination thereof,

wherein the radio acquisition apparatus is configured to acquire at least one variable of the acquired radio signal and to determine the respiratory rate of the living being depending on the at least one variable.

15. The magnetic resonance imaging device of claim 14, further comprising at least one reception coil,

wherein the radio transmitter is signal-connected to the at least one reception coil and is configured to emit a message signal received by the at least one reception coil.

16. The magnetic resonance imaging device of claim 14, wherein the at least one variable comprises at least one frequency, at least one amplitude, at least one phase, or any combination thereof.

17. The magnetic resonance imaging device of claim 14, wherein the radio acquisition apparatus comprises at least one frequency filter.

18. The magnetic resonance imaging device of claim 16, wherein the radio acquisition apparatus comprises at least one frequency filter.

19. The magnetic resonance imaging device of claim 17, wherein the at least one frequency filter comprises a low-pass filter.

20. The magnetic resonance imaging device of claim 14, wherein the radio acquisition apparatus comprises at least one power detector, at least one frequency detector, at least one phase detector, or any combination thereof.