Device for detection of extravasation

• US 20020172323A1
• Filed: 02/01/2002
• Published: 11/21/2002
• Est. Priority Date: 02/02/2001
• Status: Abandoned Application

• Current Assignee: University Of Massachusetts
• Original Assignee: University Of Massachusetts
• Inventors: Davis, Michael A., Karellas, Andrew
• Application Number:
  US10/062,284
• Publication Number:
  US 20020172323A1
• Time in Patent Office: Days
• US Class Current: 378/51
• CPC Class Codes: G01F 1/66 by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters

Abstract

The present invention involves imaging systems for the detection of extravasation. A pixellated detector is preferably used to detect and control the injection of contrast agents or medications used in a variety of diagnostic or therapeutic procedures.

Claims

1. A device for the detection of extravasation comprising:

an imaging detector;

an injector; and

a processor that receives image data from the detector.

2. The device of claim 1 further comprising an energy source that directs energy at the detector.

3. The device of claim 2 wherein the energy source comprises an x-ray radiation source.

4. The device of claim 2 wherein the energy source comprises an ultrasound transducer array.

5. The device of claim 1 wherein the detector comprises an x-ray detector.

6. The device of claim 1 wherein the processor is connected to an injector.

18. The device of claim 2 wherein the detector comprises amorphous silicon.

19. The device of claim 1 wherein the detector comprises a change coupled device.

20. The device of claim 1 wherein the processor is connected to the injector.

7. A method for controlling an injection of a material comprising:

injecting a material into a lumen at an injection site;

forming an image of a region of interest including the injection site;

indicating intrusion of the material beyond a lumen boundry; and

altering an injection rate of the material in response to the indicated intrusion.

8. The method of claim 7 further comprising injecting a contrast agent for an imaging procedure into the lumen of a patient.

9. The method of claim 7 further comprising providing an x-ray source and an x-ray detector.

10. The method of claim 7 further comprising providing an ultrasound imaging system.

11. The method claim 7 further comprising providing an ultrasound transducer array connected to a data processor, an imaging device and an automated injector.

12. The method of claim 7 further comprising conducting a CT examination of a patient.

13. The method of claim 9 wherein the detector comprises a scintillator coupled to pixellated detector.

14. The method of claim 7 wherein the step of forming an image comprises detecting x-rays transmitted through a region of interest of the patient with an x-ray sensitive pixellated flat panel detector.

16. The device of claim 15 further comprising the x-ray source directs x-rays onto the detector having a two dimensional array of pixels.

17. The device of claim 15 wherein the detector is coupled to a scintillator with a fiber optic coupler.

15. A device for the detection of extravasation comprising:

an x-ray source;

an imaging detector;

an automated injector; and

a processor that receives image data from the detector.