Transducer array imaging system

• US 20080114247A1
• Filed: 11/10/2006
• Published: 05/15/2008
• Est. Priority Date: 11/10/2006
• Status: Abandoned Application

• Current Assignee: Siemens Medical Solutions USA Incorporated (Siemens AG)
• Original Assignee: Penrith Corporation (Siemens AG)
• Inventors: Randall, Kevin S., Klessel, Jodi Schwartz, Urbano, Joseph A., Lannutti, Anthony P., Weymer, Raymond F.
• Application Number:
  US11/595,340
• Publication Number:
  US 20080114247A1
• Time in Patent Office: Days
• US Class Current: 600/447
• CPC Class Codes: A61B 5/7232 involving compression of the physiological signal, e.g. to extend the signal recording period
• CPC Class Codes: A61B 8/00 Diagnosis using ultrasonic, sonic or infrasonic waves imaging of objects using sonar G01S15/00
• CPC Class Codes: A61B 8/4422 related to hygiene or sterilisation
• CPC Class Codes: A61B 8/4438 Means for identifying the diagnostic device, e.g. barcodes
• CPC Class Codes: A61B 8/4472 Wireless probes
• CPC Class Codes: A61B 8/4483 characterised by features of the ultrasound transducer
• CPC Class Codes: A61B 8/56 Details of data transmission or power supply
• CPC Class Codes: G01S 15/8909 using a static transducer configuration
• CPC Class Codes: G01S 15/8927 using simultaneously or sequentially two or more subarrays or subapertures
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• CPC Class Codes: G01S 7/52033 Gain control of receivers for seismic signals G01V1/245
• CPC Class Codes: G01S 7/52085 Details related to the ultrasound signal acquisition, e.g. scan sequences control of medical diagnostic ultrasound devices A61B8/54
• CPC Class Codes: G01S 7/52096 related to power management, e.g. saving power or prolonging life of electronic components details of power supplies for ultrasonic medical diagnostic imaging devices A61B8/56

Abstract

The disclosed embodiments include a method, system, and device for conducting ultrasound interrogation of a medium. The novel method includes transmitting a non-beamformed or beamformed ultrasound wave into the medium, receiving more than one echoed ultrasound wave from the medium, and converting the received echoed ultrasound wave into digital data. The novel method may further transmit the digital data. In some embodiments, the transmitting may be wireless. The novel device may include transducer elements, an analog-to-digital converter in communication with the transducer elements, and a transmitter in communication with the analog-to-digital converter. The transducers may operate to convert a first electrical energy into an ultrasound wave. The first electrical energy may or may not be beamformed. The transducers also may convert an echoed ultrasound wave into a second electrical energy. The analog-to-digital converter may convert the electrical energy into digital data, and the transmitter may transmit the digital data.

Claims

1. A method for conducting ultrasound interrogation of a medium, comprising:

receiving a first digital data representing a first ultrasound wave, wherein the first ultrasound wave is at a first location;

receiving a second digital data representing a second ultrasound wave, wherein the second ultrasound wave is at the first location; and

combining the first and second digital data at a second location, wherein the first location is relatively remote from the second location.

2. The method of claim 1, further comprising creating an image based on the combining.

3. The method of claim 2, further comprising determining an image value representing a location in the medium by combining the first digital data with the second digital data.

4. The method of claim 3, wherein the image value represents a displayed pixel.

5. The method of claim 3, wherein the digital data comprises at least one of the following:

amplitude and phase.

6. The method of claim 1, further comprising weighting the first and second digital data.

7. The method of claim 6, further comprising combining the weighted values.

8. The method of claim 1, further comprising adding the first and second digital data.

9. The method of claim 1, wherein combining the first and second digital data further comprises:

identifying a first transmission point of the first ultrasound wave;

identifying a first reception point of the first ultrasound wave;

identifying a second transmission point of the second ultrasound wave;

identifying a second reception point of the second ultrasound wave;

determining a first time of the ultrasound wave to travel from the first transmission point to the first reception point; and

determining a second time of the ultrasound wave to travel from the second transmission point to the second reception point.

10. The method of claim 9, wherein the first and second times are adjusted to accommodate movement of at least one of the transmission and reception points.

11. The method of claim 9, wherein the first location is less than three meters from the second location.

12. The method of claim 9, further comprising selecting the first digital data to be combined with the second digital data based on the first and second times.

13. The method of claim 9, further comprising delaying the first digital data such that it is capable of being combined with the second digital data.

14. The method of claim 9, further comprising determining the first time based on a first point in the medium, the first transmission point and the first reception point, and determining the second time based on a second point in the medium, the second transmission point and the second reception point.

15. The method of claim 14, wherein the first location and the second location are substantially the same.

16. The method of claim 14, wherein the first time is representative of a first pixel value, and wherein the second time is representative of a second pixel value.

17. The method of claim 16, wherein the first and second pixel values have at least one of the following characteristics:

amplitude and phase.

18. The method of claim 9, wherein the first and second transmission points are substantially the same.

19. The method of claim 9, wherein the first and second reception points are substantially the same.

20. The method of claim 9, wherein the first and second transmission points and the first and second reception points are substantially different.

21. The method of claim 1, wherein the first ultrasound wave and the second ultrasound wave are substantially the same.

22. The method of claim 1, further comprising storing the first and second digital data.

23. The method of claim 1, further comprising converting the digital data to a baseband signal.

24. The method of claim 1, wherein the digital data is a baseband signal.

25. The method of claim 1, wherein the receiving is at least partially wireless.

26. The method of claim 25, further comprising synchronizing the wireless signal using a unique data sequence.

27. The method of claim 25, wherein the receiving uses at least one of the following techniques:

optical, infrared, radio frequency, and ultrawideband frequency.

28. The method of claim 1, further comprising creating an image frame based on the received digital data.

29. The method of claim 28, further comprising displaying the image frame.

30. The method of claim 28, further comprising forming a pixel in the image frame based on the digital data.

31. The method of claim 30, wherein characteristics of the pixel are determined as a function of amplitude and phase.

32. The method of claim 30, further comprising forming the pixel via interpolation of the digital data.

33. The method of claim 30, further comprising forming the pixel directly from the digital data.

34. The method of claim 1, further comprising sampling the digital data using baseband sampling techniques.

35. The method of claim 34, further comprising conducting the baseband sampling as a function of a display resolution.

36. The method of claim 30, further comprising forming the pixel directly from baseband sampled digital data.

37. The method of claim 1, further comprising controlling characteristics of transmission of the received digital data based on at least one of the following:

a rate of displaying an image frame, an amount of digital data per image frame, a region of interest of the medium, a rate sufficient to display the image frame at a predetermined display resolution, and a rate at least equal to a product of a rate of displaying the image frames and an amount of digital data per image frame.

38. The method of claim 1, further comprising selecting the digital data as a function of a region of interest of the medium.

39. The method of claim 1, further comprising requesting retransmission of a compromised data packet of digital data.

40. The method of claim 1, further comprising adjusting a rate of receiving the digital data as a function of at least one of the following:

capability of a remote unit, quality of transmission of digital data, quantity of errors in transmission of digital data, and availability of power.

41. The method of claim 1, further comprising receiving the digital data via multiple receivers.

42. The method of claim 1, further comprising receiving configuration information with the digital data, wherein the configuration information includes at least one of the following:

power status, designation of a remote unit, type of a remote unit, frequency range, array configuration, power warnings, capability of a remote unit, availability of power required for transmission of digital data, change in transmission rate, completion of transmission, quality of data transmission, processing characteristics of the ultrasound waves, processing characteristics of the digital data, transmission characteristics of the digital data, and data reflective of operation of a remote unit.

43. The method of claim 1, further comprising sensing a proximity to a transmitter device using at least one of the following techniques:

optical, infrared, capacitive, inductive, electrically conductive, and radio frequency.

44. The method of claim 1, further comprising providing power upon sensing a proximity of the device to a remote unit.

45. The method of claim 1, further comprising indicating data receiving characteristics, including at least one of the following:

change in receiving rate, completion of receiving, and quality of data reception, power status, designation of remote unit, type of remote unit, frequency range, array configuration, power warnings, capability of the device, quality of transmission of digital data, quantity of errors in transmission of digital data, availability of power required for transmission of digital data, and wireless signal strength.

46. The method of claim 1, further comprising receiving a unique identifier with the digital data.

47. The method of claim 46, wherein the unique identifier is used for at least one of the following:

initiating communication with a remote unit, and ensuring communication with a predetermined remote unit.

48. The method of claim 1, further comprising limiting receiving of digital data from a wireless transmitter as a function of at least one of the following:

predetermined distance and predetermined signal strength.

49. The method of claim 1, further comprising arranging the digital data.

50. The method of claim 49, wherein arranging the digital data comprises at least one of the following:

demultiplexing and deinterleaving.

51. The method of claim 50, further comprising demultiplexing using at least one of the following techniques:

time-division demultiplexing, frequency-division demultiplexing, code-division demultiplexing, and pulse width-division demultiplexing.

52. The method of claim 50, wherein the digital data is deinterleaved as a function of at least one of the following:

time, channel position and data bit position.

53. The method of claim 1, wherein the digital data is partially combined prior to the receiving.

54. The method of claim 1, wherein the combining comprises at least partial beamforming.

55. The method of claim 1, wherein the combining comprises synthetic focusing.

56. The method of claim 1, further comprising receiving a plurality of wirelessly transmitted ultrasound echo waves at a substantially similar time, and determining the characteristics of a medium by synthetic focusing.

57. A method for processing an ultrasound echo wave, comprising:

receiving a plurality of wirelessly transmitted ultrasound echo waves at a substantially similar time; and

determining the characteristics a medium by superimposing the received echo waves.

58. A system for conducting ultrasound interrogation of a medium, comprising:

a receiver for receiving a first digital data representing a first ultrasound wave, wherein the first ultrasound wave is at a first location, wherein said receiver receives a second digital data representing a second ultrasound wave, and wherein the second ultrasound wave is at the first location;

a data store for storing the first and second digital data; and

a processor for combining the first and second digital data at a second location to create an image, wherein the first location is relatively remote from the second location.

59. The system of claim 58, wherein the receiver is at least partially wireless.

60. The system of claim 58, wherein the first and second digital data is received over a wire including at least one of the following:

an electrical conductor, a magnetic conductor, twisted pair of conductors, a coaxial conductor, and an optical conductor.

61. The system of claim 58, wherein the digital data is converted to another frequency band.

62. The system of claim 58, wherein a bandwidth of the digital data is reduced by limiting the digital data as a function of a displayed region of interest of the medium.

63. The system of claim 58, wherein the digital data is packetized.

64. The system of claim 58, wherein the processor creates an image frame based on the received digital data.

65. The system of claim 64, further comprising a display device for displaying the image frames.

66. The system of claim 65, wherein the display device displays at least one of the following:

change in receiving rate, completion of receiving, quality of data reception, power status, designation of remote unit, type of remote unit, frequency range, array configuration, power warnings, capability of the device, quality of transmission of digital data, quantity of errors in transmission of digital data, availability of power required for transmission of digital data, and wireless signal strength.

67. The system of claim 64, wherein the processor forms a pixel in the image frame from the digital data.

68. The system of claim 67, wherein a characteristic of the pixel is determined as a function of time and amplitude based on the first digital data and the second digital data.

69. The system of claim 67, wherein the pixel is formed via interpolation of the digital data.

70. The system of claim 58, wherein the receiver uses at least one of the following techniques:

optical, infrared, radio frequency, and ultrawideband frequency.

71. The system of claim 58, further comprising another receiver for receiving digital data.

72. The system of claim 58, wherein the receiver uses a unique identifier to permit communication with a predetermined remote unit.

73. The system of claim 58, wherein the receiver receives a unique identifier is used in initiating communication between the receiver and a remote unit.

74. The system of claim 58, further comprising a transmitter, wherein at least one of the transmitter and the receiver provide control data.

75. The system of claim 74, wherein the control data includes at least one of the following:

power status, designation of device, type of device, frequency range, array configuration, power warnings, capability of a remote unit, quality of transmission of digital data, quantity of errors in transmission of digital data, availability of power required for transmission of digital data, change in transmission rate, completion of transmission, quality of data transmission, look-up tables, programming code for field programmable gate arrays and microcontrollers, transmission characteristics of the non-beamformed ultrasound wave, processing characteristics of the echoed ultrasound wave, processing characteristics of the digital data, and transmission characteristics of the digital data.

76. The system of claim 58, wherein the receiver receives digital data at a rate that varies with at least one of the following:

capability of a remote unit, power status, designation of a remote unit, type of a remote unit, frequency range, array configuration, power warnings, quality of transmission of digital data, quantity of errors in transmission of digital data, availability of power, a commanded change in transmission rate, and transmission characteristics of the digital data.

77. The system of claim 58, wherein the receiver comprises a receiver channel, and wherein the receiver channels include a first channel and a second channel, and wherein the first and second channels have different characteristics including at least one of the following:

transmission protocol, operating frequency, orthogonal relationship with respect to one another, and temporal interleaving.

78. The system of claim 58, wherein the receiver operates on at least one of the following multiplexing techniques:

time division multiplexing, frequency division multiplexing, wavelength division multiplexing, and code division multiplexing.

79. The system of claim 58, further comprising a demultiplexer in communication with the processor for demultiplexing the digital data.

80. The system of claim 79, wherein the demultiplexer uses at least one of the following techniques:

time-division multiplexing, frequency-division multiplexing, and code-division multiplexing.

81. The system of claim 58, wherein the data store is at least one of the following:

a first-in-first-out buffer, a random access memory, and a flash memory.

82. The system of claim 58, wherein the processor determines an image value representing a location in the medium by combining the first digital data with the second digital data.

83. The system of claim 82, wherein the image value represents a displayed pixel.

84. The system of claim 82, wherein the digital data comprises at least one of the following:

amplitude and phase.

85. The system of claim 58, wherein the processor weights the first and second digital data.

86. The system of claim 58, wherein the processor adds the first and second digital data.

87. The system of claim 58, wherein the processor identifies a first transducer element that transmits the first ultrasound wave, a second transducer element that receives the first ultrasound wave, a third transducer element that transmits the second ultrasound wave, and a fourth transducer element that receives the second ultrasound wave.

88. The system of claim 87, wherein the processor determines a first time of the ultrasound wave to travel from the first transducer to the second transducer, and determines a second time of the ultrasound wave to travel from the third transducer to the fourth transducer.

89. The system of claim 88, wherein the processor delays the first digital data such that it is capable of being combined with the second digital data.

90. The system of claim 88, wherein the data store determines the first time based on a location in the medium and the first and second transducers, and wherein the processor determines the second time based on the location in the medium and the third and fourth transducers.

91. The system of claim 90, wherein a first pixel value is based on the first time and the first and second transducers, and wherein a second pixel value is based on the second time and the third and fourth transducers.

92. The system of claim 91, wherein the first pixel value and the second pixel value each have an amplitude and a phase.

93. The system of claim 88, wherein the data store identifies at least one of an amplitude and phase value for a location in the medium, based on the first and second time, the first, second, third and fourth transducers.

94. The system of claim 58, wherein the processor controls characteristics of transmission of the received digital data based on at least one of the following:

a rate of displaying an image frame, an amount of digital data per image frame, a region of interest of the medium, a rate sufficient to display the image frame at a predetermined display resolution, and a rate at least equal to a product of a rate of displaying the image frames and an amount of digital data per image frame.

95. The system of claim 58, wherein the processor selects the digital data as a function of a region of interest of the medium.

96. The system of claim 58, wherein the processor requests retransmission of a compromised digital data.

97. The system of claim 58, wherein the processor adjusts the receiver as a function of at least one of the following:

capability of a remote unit, quality of transmission of digital data, quantity of errors in transmission of digital data, and availability of power.

98. The system of claim 58, wherein the processor receives configuration information with the digital data, wherein the configuration information includes at least one of the following:

power status, designation of a remote unit, type of a remote unit, frequency range, array configuration, power warnings, capability of a remote unit, availability of power required for transmission of digital data, change in transmission rate, completion of transmission, quality of data transmission, processing characteristics of the ultrasound waves, processing characteristics of the digital data, and transmission characteristics of the digital data.

99. The system of claim 58, further comprising a proximity sensor in communication with the processor, wherein the proximity sensor senses a proximity to a remote device using at least one of the following techniques:

optical, infrared, capacitive, inductive, electrically conductive, and radio frequency.

100. The system of claim 99, wherein the proximity sensor provides power upon sensing a proximity to a remote unit.

101. The system of claim 58, wherein the processor adjusts the receiver to limit receiving of digital data from a wireless transmitter as a function of at least one of the following:

predetermined distance and predetermined signal strength.

102. The system of claim 58, further comprising a multiplexer in communication with the processor, wherein the multiplexer arranges the digital data.

103. The system of claim 102, wherein the multiplexer performs at least one of the following:

demultiplexes and deinterleaves the digital data.

104. The system of claim 102, wherein the multiplexer uses at least one of the following techniques:

time-division multiplexing, frequency-division multiplexing, code-division multiplexing, and pulse width-division multiplexing.

105. The system of claim 103, wherein the multiplexer deinterleaves the digital data a function of at least one of the following:

time, channel position, and data bit position.

106. The system of claim 58, wherein the digital data is partially combined prior to being received by the receiver.

107. The system of claim 58, wherein the processor combines the digital data using at least partial beamforming.

108. The system of claim 58, wherein the processor combines the digital data using synthetic focusing.

109. A method for conducting ultrasound interrogation of a medium, comprising:

receiving digital data;

determining from the received digital data a first time of an ultrasound wave to travel from a first transducer element to a second transducer element; and

determining from the received digital data a second time of the ultrasound wave to travel from a third transducer element to a fourth transducer element.