1
Matthew O Donnell, Lewis J Thomas III: Method and apparatus for applying synthetic aperture focusing techniques to a catheter based system for high frequency ultrasound imaging of small vessels. General Electric Company, Marvin Snyder, February 16, 1993: US05186177 (131 worldwide citation)

A catheter based ultrasound imaging system is disclosed which is capable of providing images of coronary vessels at frequencies near 50 MHz. The catheter based system implements a Synthetic Aperture Focusing Technique (SAFT) by scanning through a miniature ultrasound transducer array to sequentially ...


2
Lewis J Thomas III, Michael J Harsh: Phased array sector scanner with multiplexed acoustic transducer elements. General Electric Company, Marvin Snyder, July 19, 1994: US05329930 (73 worldwide citation)

A phased array sector scanning ultrasonic imaging system includes a transducer array with 2N separate transducer elements and a transmitter and receiver with N separate channels. The complete 2N element aperture is realized at each beam angle with two firings of the transmitter and the receipt of ec ...


3
Lewis J Thomas III, Robert S Gilmore, Casmir R Trzaskos: High frequency focused ultrasonic transducer for invasive tissue characterization. General Electric Company, Henry I Steckler, James C Davis Jr, Paul R Webb II, March 27, 1990: US04911170 (67 worldwide citation)

A broadband 25 to 50 MHz spherically focused ultrasonic transducer is placed on the tip of a catheter such that ultrasonic images of arteries and plaque are produced by introducing the catheter into arteries of patients. The high frequency transducer has thin piezoelectric polymer film as the transd ...


4
Lewis J Thomas III, Ralph A Hewes: Apparatus and method for acquiring imaging signals with reduced number of interconnect wires. General Electric Company, Marvin Snyder, July 13, 1993: US05226847 (52 worldwide citation)

Apparatus for echo mode imaging of a blood vessel is disclosed having a plurality of transducers that transmit a substantially unfocused omni-directional signal in at least one plane towards the vessel. The reflected signal is received and transmitted in time multiplexed form to an Analog-to-Digital ...


5
Michael K Cueman, Lewis J Thomas III, Casmir R Trzaskos, August D Matula, Michael J Austin: Microfocus X-ray tube with optical spot size sensing means. General Electric Company, Paul R Webb II, James C Davis Jr, December 18, 1990: US04979199 (38 worldwide citation)

A microfocus X-ray tube has an anode that emits X-rays and, a biproduct of its waste heat, visible and near infrared light. This invention uses the biproduct light to adjust and maintain the focus of the electron beam and enhance the performance of the X-ray tube as a point source of X-rays. Only th ...


6
Lewis J Thomas III: Method and system for displaying and/or manipulating medical image data. Siemens Medical Solutions USA, April 29, 2008: US07366992 (32 worldwide citation)

In one embodiment, a medical image viewer in compliance with a medical image standard is provided, and a file in compliance with the medical image standard is provided to the medical image viewer. The medical image standard specifies a first field for data not in compliance with the medical image st ...


7
Michael K Cueman, Casmir R Trzaskos, Lewis J Thomas III, Charles D Greskovich: High resolution X-ray detector. General Electric Company, Donald R Campbell, James C Davis Jr, Paul R Webb II, September 26, 1989: US04870279 (26 worldwide citation)

An imaging X-ray sensor is composed of a linear array of microscopically small bars of polycrystalline ceramic scintillator material bonded at the bar ends to an integrated circuit photodetector array. The scintillator bars are the basic resolution elements of the detector and are less than 50 micro ...


8
Lewis J Thomas III, Robert S Gilmore, Homer H Glascock II: Cure monitoring apparatus having high temperature ultrasonic transducers. General Electric Company, Paul R Webb II, James C Davis Jr, May 1, 1990: US04921415 (24 worldwide citation)

An apparatus for monitoring the curing of a fiber reinforced composite plastic which is cured at temperatures of the order of 350.degree. C. and an ultrasonic transducer assembly useful in the apparatus. The transducer assembly comprises a lithium niobate piezoelectric element having anisotropic coe ...


9
Xuan Ming Lu, Timothy L Proulx, Lewis J Thomas III, Worth B Walters: Multi-dimensional ultrasound transducer array. Siemens Medical Solutions USA, July 28, 2009: US07567016 (20 worldwide citation)

In k31 mode, a vibration is along an axis or orthogonal to the poling or electric field orientation. The direction of vibration is toward a face of an ultrasound transducer array. For each element of the array, electrodes are formed perpendicular to the face of the array, such as along the sides of ...


10
Lewis J Thomas III, Robert S Gilmore, Homer H Glascock II: Temperature compensated piezoelectric transducer assembly. General Electric Company, Donald R Campbell, James C Davis Jr, Paul R Webb II, April 25, 1989: US04825117 (17 worldwide citation)

An apparatus for monitoring the curing of a fiber reinforced composite plastic which is cured at temperatures of the order of 350.degree. C. and an ultrasonic transducer assembly useful in the apparatus. The transducer assembly comprises a lithium niobate piezoelectric element having anisotropic coe ...