Flexible physiological cycle detection and use for ultrasound

• US 20050288585A1
• Filed: 06/24/2004
• Published: 12/29/2005
• Est. Priority Date: 06/24/2004
• Status: Abandoned Application

• Current Assignee: Siemens Medical Solutions USA Incorporated (Siemens AG)
• Original Assignee: Siemens Medical Solutions USA Incorporated (Siemens AG)
• Inventors: Zamboglu, Zafer, Kubel, John F., Guracar, Ismayil
• Application Number:
  US10/876,189
• Publication Number:
  US 20050288585A1
• Time in Patent Office: Days
• US Class Current: 600/438
• CPC Class Codes: A61B 2503/40 Animals
• CPC Class Codes: A61B 5/352 Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval
• CPC Class Codes: A61B 8/06 Measuring blood flow measuring volume flow in general G01F, e.g. G01F1/66, G01F1/72; measuring speed of fluids in general G01P5/00
• CPC Class Codes: A61B 8/13 Tomography A61B8/10, A61B8/12 take precedence; tomography for radiation diagnosis A61B6/02
• CPC Class Codes: A61B 8/543 involving acquisition triggered by a physiological signal

Abstract

Processing is optimized for specific sources or conditions for physiological waveforms. For example, parameters are optimized for processing different human and non-human physiological waveforms. Filter cutoff frequencies, amplitude thresholds, delay time periods and/or other parameters for trigger detection and/or waveform generation are optimized. The optimization may be performed using a single user input, such as switching between different physiological cycle processes in response to one-touch by a user. For example, the system switches between a human ECG trigger detection process and associated parameters and a rodent ECG trigger detection process and associated parameters with the touch of a button. Switching between different types of human physiological cycle processes, such as processes for normal and abnormal functioning, is alternatively or additionally provided. More inclusive settings may be used for automatically identifying a characteristic of a physiological cycle waveform. Once the characteristic is identified, such as a characteristic identifying a human waveform associated with a particular abnormal function or a non-human waveform, the processing associated with the physiological cycle signals is optimized for use with the detected type of source or condition.

Claims

1. A method for processing signals representing a physiological cycle with an ultrasound system, the method comprising:

(a) receiving signals representative of at least a portion of a physiological cycle;

(b) providing at least two different parameters associated with a respective two different physiological cycle characteristics;

(c) selecting one of the at least two different parameters; and

(d) processing the signals as a function of the selected one of the at least two different parameters.

2. The method of claim 1 wherein (b) comprises providing the at least two different parameters associated with normal physiological cycle and an abnormal physiological cycle.

3. The method of claim 1 wherein (b) comprises providing the at least two different parameters associated with a human physiological cycle and a non-human physiological cycle.

4. The method of claim 1 wherein (a) comprises receiving one of ECG or breathing cycle signals.

5. The method of claim 1 wherein (c) comprises:

(c1) detecting one of the two different physiological cycle characteristics with a processor; and

(c2) selecting the associated parameter based on the detected one of the physiological cycle characteristics.

6. The method of claim 1 wherein (c) comprises selecting in response to input by a user.

7. The method of claim 6 wherein (c) comprises selecting in response to a single user activation.

8. The method of claim 1 wherein (d) comprises detecting a cycle event.

9. The method of claim 1 wherein (d) comprises generating a waveform representing the physiological cycle.

10. The method of claim 1 wherein the at least two different parameters are at least two different filter parameters and (d) comprises filtering the signals.

11. The method of claim 1 wherein the at least two different parameters are at least two different combinations of filters and (d) comprises filtering the signals.

12. The method of claim 1 wherein the at least two different parameters are at least two different settings of:

heart rate limits, filter bandwidths, cutoff frequencies, trigger hold-off times, trigger thresholds or combinations thereof, and (d) comprises applying one of the at least two different settings.

13. The method of claim 1 further comprising:

(e) altering a transmit power as a function of the selection of (c).

14. The method of claim 1 further comprising:

(e) adjusting ultrasound imaging as a function of the selection of (c).

15. A system for optimizing an ultrasound system for a specific physiological waveform, the system comprising:

an input operable to receive signals representative of at least a portion of a physiological cycle;

a memory operable to store different physiological waveform processes for different physiological waveforms of a same type; and

a processor operable to implement at least one of the different physiological waveform processes on the signals.

16. The system of claim 15 wherein the different physiological waveform processes are different settings for a same algorithm.

17. The system of claim 15 wherein the different physiological waveform processes are different settings selected from the group of:

filter parameters, combinations of filters, heart rate limits, filter bandwidths, cutoff frequencies, trigger hold-off times, trigger thresholds or combinations thereof.

18. The system of claim 15 wherein the different physiological waveforms comprise waveforms selected from the group of:

a normal physiological cycle, an abnormal physiological cycle, a human physiological cycle and a non-human physiological cycle.

19. The system of claim 15 wherein the input comprises an ECG input.

20. The system of claim 15 wherein the processor is operable to select the one of the different physiological waveform processes as a function of the signals.

21. The system of claim 15 further comprising:

a user input, wherein the processor is responsive to input from the user input to select the one of the different physiological waveform processes.

22. A method for processing signals representing a physiological cycle with an ultrasound system, the method comprising:

(a) receiving signals representative of at least a portion of a physiological cycle;

(b) determining a characteristic of the signals;

(c) processing the signals; and

(d) setting the processing of (c) as a function of the characteristic.

23. The method of claim 22 wherein (a) comprises receiving ECG signals, wherein (b) comprises determining heart rate, wherein (c) comprises one of triggering and generating a waveform, and wherein (d) comprises altering a setting selected from the group of:

filter parameter, combination of filters, heart rate limit, filter bandwidth, cutoff frequency, trigger hold-off time, trigger threshold or combinations thereof.

24. The method of claim 22 wherein (b) comprises identifying the signals as waveform types of:

a normal-human physiological cycle, an abnormal-human physiological cycle, a first type of non-human physiological cycle, or a second type of non-human physiological cycle, the determination being based on comparisons for at least two of the waveform types.

25. The method of claim 22 wherein (b) comprises processing the signals with inclusive settings and wherein (d) comprises altering the processing of (c) to have less inclusive settings, the processing of (b) and (d) being a same type of processing.

26. The method of claim 22 wherein (b) comprises detecting a electromyographic noise.

27. A method for processing signals representing a physiological cycle with an ultrasound system, the method comprising:

(a) receiving signals representative of at least a portion of a physiological cycle;

(b) providing at first and second different parameters associated with a respective two different physiological cycle characteristics;

(c) switching between processing the signals with the first and the second different parameters in response to user input.

28. The method of claim 27 wherein (a) comprises receiving ECG signals, wherein (b) comprises providing the first parameter for a normal ECG waveform and providing the second parameter for an abnormal ECG waveform, and wherein (c) comprises switching between processing the signals as normal and abnormal.

29. The method of claim 27 wherein (b) comprises providing the first parameter for a human waveform and providing the second parameter for a non-human waveform.

30. The method of claim 27 wherein (c) comprises switching in response to a single user activation.