Medrad, Inc.

Michael G Frazier

Alan D Hirschman

Douglas Mark Zatezalo

Martin J Uram

Bruno Fazi, Jr

John Gardner

Paul Reynolds

Kenton E Adams

An injector system for use in injecting a fluid into a patient includes a communication system adapted to receive data from at least a first sensor that measures a value first variable. The communication system is also adapted to receive data from a calibrated sensor that measures a value the first variable. The injector system further includes a calibration system adapted to calibrate output from the first sensor in response to output from the calibrated sensor. An injector for use in injecting a fluid into a patient, includes a first sensor that measures a value first variable, a communication port adapted to receive data from a calibrated sensor that measures the value the first variable, and a controller adapted to compare data from the calibrated sensor with data from the first sensor and to calibrate output from the first sensor. The devices, systems and methods of the present invention are applicable to systems other than injection systems. For example, a method for calibrating a system (for example, an injector system) includes: placing a calibrated sensor in communication with the system; making a measurement of the value of at least a first variable with the calibrated sensor; transmitting the measured value from the calibrated sensor to the system via a data communication system in operative connection between the calibrated sensor and the system; making a measurement of the value of the first variable with a sensor of the system at approximately the same time as the measurement made with the calibrated sensor; comparing the value of the first variable measured with the calibrated sensor with the value of the first variable measured with the system sensor; and calibrating the output of the system sensor at least in part based upon the comparison.

Devices, systems and method for calibration of systems

An injector system for injection of a fluid medium into a patient within an electromagnetic isolation area. The injector system includes a powered injector, a system controller therefor, and a plurality of communication units. The powered injector is positioned within the isolation area. A first communication unit integral with the powered injector enables the first communication unit and the powered injector to be moved as a unit. The system controller is positioned outside the isolation area and has a second communication unit integral therewith. An intermediate communication unit ensures communication between the first and the second communication units and therethrough between the powered injector and the system controller using an authentication technique therewith. The first, second and intermediate communication units are adapted to communicate by transmission of radio frequency (RF) energy. The RF energy is chosen to avoid interfering with the operation of MRI scanners.

Communication systems for use with magnetic resonance imaging systems

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Lower Burrell, PA, United States of America

Michael G Frazier