Inventor

OPPELT RALPH

DE82 patents

⚠️ This page may combine multiple inventors who share the name “OPPELT RALPH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

OPPELT RALPH

SIEMENS AG

Ultrasound imaging system having a reduced number of lines between the base unit and the probe

Duplexer including a field-effect transistor for use in an ultrasound imaging system

Diagnostic magnetic resonance apparatus having a radio frequency shield between the radio frequency antenna and the gradient coil system

Arrangement for operating a symmetrical radio-frequency antenna in a nuclear magnetic resonance tomography apparatus

Combined positron emission tomography and magnetic resonance tomography unit

RF transmitter arrangement for an MR system, and method for determining a setting parameter therefor

Magnetic resonance system and operating method for RF pulse optimization

Transmitting/receiving circuit and transmitting/receiving method for a transducer

Ultrasound transducer head with integrated variable-gain amplifier devices

Magnetic resonance imaging apparatus with regulator for reducing eddy current effects

Line transformer

π/2 power divider

Combined positron emission tomography and magnetic resonance tomography unit

Surface resonator for a magnetic resonance imaging apparatus

Circularly polarizing rf antenna for an mri apparatus having a c-magnet

Detuning circuit for resonators in a nuclear magnetic resonance imaging apparatus

Remotely fed module

Arrangement to transmit magnetic resonance signals

Arrangement to transmit magnetic resonance signals via multiplexed multiplexer reception branches

Amplifier device with frequency-response-compensating amplifier reactance, and use of the amplifier device

Electrical conductor arrangement

Truncated cone shaped surface resonator for nuclear magnetic resonance tomography

Array apparatus for reading-out a two-dimensional charge image

Reception unit for a magnetic resonance tomography apparatus

Method for local reduction of the operating noise produced by a medical diagnostic or therapy device, and medical diagnostic or therapy device having a device for implementing such a method

Low-noise amplifier device having negative feedback via a controlled current source, and method of using the amplifier device

Dynamics compressor for an analog signal to be compressed

Low-noise broadband amplifier device having negative feedback via a controlled current source, and use of the amplifier device

Duplexer including a variable capacitance diode for an ultrasound imaging system

Radio-frequency antenna for a magnetic resonance apparatus

Circularly polarizing rf antenna for an mri apparatus

Resonator for a magnetic resonance imaging apparatus

Transformer arrangement to accomplish impedance transformation

Arrangement for tuning a balanced-to-ground resonator

Apparatus for checking for a presence of an electrically conductive body, and charging system

Filter circuit arrangement

Method for determining positron emission measurement information in the context of positron emission tomography

Method for combining PET with MR perfusion and diffusion

Push-pull amplifier with transformational negative feedback

Antenna amplifier, in particular for a magnetic resonance antenna

Multiplexer with clock suppression

Differential amplifier

Amplifier device with an adjustable operating-control

Amplifier device with a selectable active or passive operational mode and ultrasonic apparatus

Method and device for recording an image of an object surface using focussed radiation

SIEMENS MEDICAL SYSTEMS INC

Ultrasound front-end circuit combining the transmitter and automatic transmit/receiver switch

Transmit/receive ultrasound front end circuit providing automatic transmit/receive switching

BIBER STEPHAN

MRI antenna coil selection unit within patient table cable duct

Arrangement for processing a non-symmetrical and a symmetrical signal

BOLLENBECK JAN

Preprocessing circuit for receive signals of a local coil