1
Manfred Pfeiler, Helmut Ermert: Catheter locatable with non-ionizing field and method for locating same. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, August 27, 1991: US05042486 (413 worldwide citation)

A catheter locatable with a non-ionizing field, such as an electromagnetic or acoustic field, has a transmitting or receiving antenna for the relevant field at its tip. Receiving or transmitting antennas for the non-ionizing field are attached to a patient in which the catheter is disposed. A receiv ...


2
Helmut Ermert, Thomas Ulherr, Albrecht Bar: Rotating data transmission device. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, January 3, 1989: US04796183 (26 worldwide citation)

A rotating data transmission device has a rotating part, such as a rotor, and a stationary part, such as a stator. One of the parts is in the form of a waveguide coupled to a set of transmitters. The other part has a set of receivers associated therewith, the number of transmitters being different f ...


3
Helmut Ermert, Manfred Pfeiler, Karl Barth: Medical examination installation with improved image contrast. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, April 3, 1990: US04913154 (22 worldwide citation)

A medical installation for examining a patient irradiates at least a portion of the patient with an examination field, and detects the attenuated field and generates an image therefrom. During exposure of the patient to the examination field, a contrast agent injector is operated to intermittently i ...


4
Helmut Ermert, Manfred Pfeiler, Karl Barth: Medical examination installation with improved image contrast. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, May 8, 1990: US04922916 (15 worldwide citation)

A medical examination installation for generating images of a patient for visual display has a mechanical oscillator which vibrates at least a portion of the patient, of which an image is to be obtained, during the exposure time. The image is obtained with a pick-up device at an image frequency, and ...


5
Andreas Pesavento, Helmut Ermert: System for rapidly calculating expansion images from high-frequency ultrasonic echo signals. Lorenz & Pesavento Ingenieurbüro für Informationstechnik, Ursula B Day, February 18, 2003: US06520913 (14 worldwide citation)

Elastography is an ultrasound imaging method, which visualizes the elastic properties of biological tissue which is often impossible with conventional ultrasound images. The tissue is hereby compressed. The local tissue strain can be visualized by comparing the ultrasound images acquired before and ...


6
Helmut Ermert, Manfred Pfeiler: High-voltage generator and method for generating a high current, high-voltage pulse by pulse shaping for driving a shock wave source. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, April 28, 1992: US05109338 (7 worldwide citation)

A method and apparatus are disclosed for generating a high current, high-voltage pulse suitable for driving a shock wave source of the type which generates a shock wave in an acoustic transmission medium. In the apparatus, a signal generator generates a low-voltage signal having an energy content su ...


7
Helmut Ermert, John Lazenby, Martin Krueger, Christopher Chapman, Wilko Wilkening: Diagnostic ultrasonic imaging system and method for discriminating non-linearities. Siemens Medical Systems, December 5, 2000: US06155981 (6 worldwide citation)

In a diagnostic ultrasound imaging system, a sequence of more than two signals is transmitted into the interrogation of the patient's body. In one embodiment of the invention, the pulses are grouped as pairs that have an inverted phase, that is, one is time-domain negative of the other. In an altern ...


8
Wilko G Wilkening, Helmut Ermert, Bernhard J Brendel, Zuhua Mao, Hui Jiang: Receive filtering and filters for phase or amplitude coded pulse sequences. Siemens Medical Solutions USA, Siemens Corporation, April 10, 2003: US20030069504-A1

Receive information for multiple pulse sequences are aligned as a function of phase shifts, amplitude weightings or other differences to account at least in part for inaccuracies in the transmit pulses, noise, focusing or other differences. Separate receive filters for each of the echo signals respo ...