Device for generation of a triggering signal

• US 20080027324A1
• Filed: 07/31/2006
• Published: 01/31/2008
• Est. Priority Date: 07/31/2006
• Status: Abandoned Application

• Current Assignee: UNIVERZITA KARLOVA 3. LEKARSKA FAKULTA
• Original Assignee: UNIVERZITA KARLOVA 3. LEKARSKA FAKULTA
• Inventors: Bilwachs, Milos, Lang, Otto, Trojanova, Helena
• Application Number:
  US11/496,595
• Publication Number:
  US 20080027324A1
• Time in Patent Office: Days
• US Class Current: 600/454
• CPC Class Codes: A61B 5/055 involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• CPC Class Codes: A61B 5/1073 Measuring volume, e.g. of limbs
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/7285 for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal A61B6/5205, A61B6/541, A61B8/5207, A61B8/543 take precedence
• CPC Class Codes: A61B 6/503 for diagnosis of the heart
• CPC Class Codes: A61B 6/541 involving acquisition triggered by a physiological signal
• 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 8/08 Detecting organic movements or changes, e.g. tumours, cysts, swellings A61B8/02 - A61B8/06 take precedence
• CPC Class Codes: A61B 8/543 involving acquisition triggered by a physiological signal

Abstract

A device for generation of a triggering signal (8) for synchronized acquisition of heart images in nuclear medicine, cardiology and radiology, comprising a detector connected to a circuit (6) of signal correction and an evaluation circuit (3). The detector includes a detector of physiological signals of arteries.

Claims

1. A device for generation of a triggering signal for synchronized acquisition of heart images in nuclear medicine, cardiology and radiology, comprising:

a circuit of signal connection;

an evaluation circuit; and

a detector connected to the circuit of signal correction and to the evaluation circuit, wherein the detector comprises a detector of physiological signals of arteries.

2. The device according to claim 1, wherein the detector of physiological signals comprises of a detector of blood volume changes in arteries, and the evaluation circuit includes a block for detecting the bottom point of a saw-tooth curve of relation of blood volume in arteries to time.

3. The device according to claim 2, wherein the detector of blood volume changes in arteries comprises an optical detector.

4. The device according to claim 3, wherein the optical detector includes a red light emitting diode and a photodiode for measuring light.

5. The device according to claim 4, wherein the light measured by the photodiode includes both passed-through light and reflected light.

6. The device according to claim 2, wherein the detector of blood volume changes in arteries comprises a pneumatic detector of volume changes in a limb of a patient.

7. The device according to claim 2, wherein the detector of blood volume changes in arteries comprises a capacity detector of volume changes in a body of a patient.

8. The device according to claim 1, wherein the detector of physiological signals comprises of a detector of the blood flow speed curve in arteries, and the evaluation circuit includes a block for detecting the maximum of blood flow speed in arteries.

9. The device according to claim 8, the detector of the blood flow speed curve in arterial channel comprises an ultrasound Doppler probe.