Portable ultrasound imaging system

• US 5,964,709 A
• Filed: 10/09/1998
• Issued: 10/12/1999
• Est. Priority Date: 06/29/1995
• Status: Expired due to Term

• Current Assignee: Teratech Corporation
• Original Assignee: Teratech Corporation
• Inventors: Chiang, Alice M., Broadstone, Steven R.
• Primary Examiner(s): MANUEL, GEORGE C
• Application Number:
  US08/981,427
• Time in Patent Office: 368 Days
• Field of Search: 600/437, 600/443, 600/444, 600/445, 600/446, 600/447, 128/903, 128/916, 364/708.1
• US Class Current: 600/447
• CPC Class Codes: A61B 2560/045 with a separable interface unit, e.g. for communication
• CPC Class Codes: A61B 7/04 Electric stethoscopes microphones, acoustic transducers therefor H04R
• CPC Class Codes: A61B 8/00 Diagnosis using ultrasonic, sonic or infrasonic waves imaging of objects using sonar G01S15/00
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/4209 by using holders, e.g. positioning frames
• CPC Class Codes: A61B 8/4236 characterised by adhesive patches
• CPC Class Codes: A61B 8/4427 Device being portable or laptop-like
• CPC Class Codes: A61B 8/4455 Features of the external shape of the probe, e.g. ergonomic aspects
• CPC Class Codes: A61B 8/4472 Wireless probes
• CPC Class Codes: A61B 8/4488 the transducer being a phased array
• CPC Class Codes: A61B 8/463 characterised by displaying multiple images or images and diagnostic data on one display composite display in devices for short-range imaging with acoustic waves G01S7/52074
• CPC Class Codes: A61B 8/56 Details of data transmission or power supply
• CPC Class Codes: G01S 15/8915 using a transducer array
• CPC Class Codes: G01S 15/8934 using a dynamic transducer configuration
• CPC Class Codes: G01S 15/8979 Combined Doppler and pulse-echo imaging systems
• CPC Class Codes: G01S 15/899 Combination of imaging systems with ancillary equipment
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• CPC Class Codes: G01S 7/52023 Details of receivers
• CPC Class Codes: G01S 7/52025 for pulse systems G01S7/52034 takes precedence
• CPC Class Codes: G01S 7/52026 Extracting wanted echo signals Doppler systems G01S15/50; Doppler short range imaging systems G01S15/8979
• CPC Class Codes: G01S 7/52046 : Techniques for image enhancement involving transmitter or receiver image enhancement by image data processing G06T5/00
• CPC Class Codes: G01S 7/52053 : Display arrangements
• CPC Class Codes: G01S 7/52063 : Sector scan display
• CPC Class Codes: G01S 7/52073 : Production of cursor lines, markers or indicia by electronic means
• CPC Class Codes: G01S 7/5208 : with integration of processing functions inside probe or scanhead

Abstract

A portable ultrasound imaging system (10) includes a scan head (12) coupled by a cable (16) to a portable battery-powered data processor (14) and display unit. The scan head enclosure (12) houses an array of ultrasonic transducers and the circuitry associated therewith, including pulse synchronizer circuitry used in the transmit mode for transmission of ultrasonic pulses and beam forming circuitry used in the receive mode to dynamically focus reflected ultrasonic signals returning from the region of interest being imaged.

Claims

1. A method of scanning a region of interest with ultrasound energy to image the region of interest comprising:

providing a portable ultrasound imaging system including a transducer array and a beamforming circuit within a handheld probe, a data processing system, and a wireless interface that connects the handheld probe to the data processing system;

delivering ultrasound energy to the region of interest;

collecting ultrasound energy returning to the transducer array from the region of interest; and

transmitting data from the probe to the data processing system with the wireless interface.

2. The method of claim 1 further comprising generating an image of an object within the region of interest.

3. The method of claim 2 further comprising generating a colored image of the object.

4. The method of claim 1 further comprising providing a beamforming circuit including a plurality of programmable tapped delay lines.

5. The method of claim 1 further comprising providing a hand-held probe having a circuit board on which circuit elements are mounted, the circuit elements including a charged coupled device integrated circuit connected to an analog to digital converter.

6. The method of claim 1 wherein the step of providing a data processing system further comprises providing a battery powered portable computer having a graphical user interface.

7. The method of claim 1 further comprising displaying the image in one of a plurality of windows of a display connected to the data processing system.

8. A portable ultrasound system for scanning a region of interest with ultrasound energy to image the region of interest comprising:

a hand-held probe housing in which a transducer array and a beamforming circuit are mounted;

a data processing system that forms an electronic representation of the region of interest; and

a wireless interface that connects the handheld probe to the processing system.

9. The system of claim 8 further comprising a flat panel display that displays an image of the region of interest.

10. The system of claim 8 wherein the beamforming circuit comprises a plurality of programmable tapped delay lines.

11. The system of claim 8 further comprising a circuit board within the probe housing, the circuit board having a beamforming integrated circuit mounted thereon.

12. The system of claim 8 further comprising a display and a battery in the probe housing such that the battery provides power to the portable computer.

13. The system of claim 8 further comprising an interface unit between the probe housing and the processing system.

14. A method of scanning a region of interest with ultrasound energy to image the region of interest comprising:

providing a portable ultrasound imaging system including a transducer array and a beamforming circuit within a handheld probe, a data processing system, and a wireless interface that connects the handheld probe to the data processing system;

delivering ultrasound energy to material within the region of interest;

collecting ultrasound energy returning to the transducer array from the material; and

generating an image of the material from the ultrasound energy detected by the transducer array.

15. The method of claim 14 further comprising generating an image of an object moving within the region of interest.

16. The method of claim 14 further comprising performing beamforming on an electronic representation of the region of interest;

processing the electronic representation; and

performing scan conversion on the doppler processed representation.

17. The method of claim 14 further comprising performing a beamforming operation using a plurality of programmable tapped delay lines.

18. The method of claim 14 further comprising connecting the handheld probe to the data processing system, the data processing system comprising a portable computer with a flat panel display.

19. The method of claim 16 further comprising performing a digital to analog conversion on the beamformed representation in the handheld probe.

20. The method of claim 14 further comprising providing a control circuit formed on an integrated circuit with the beamforming circuit.