Patent · US Expired

Gradient amplifier and magnetic resonance tomography apparatus employing same

US6025720A · kind A · utility

14Cited by

5References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Helmut Lenz · Tutzing, DE
Harald Hofmann · Bergneustadt, DE

Key dates

Filing date	Feb 17, 1998
Grant date	Feb 15, 2000
Priority date	—
Expiry date	Feb 17, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/3852
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A gradient amplifier for a nuclear magnetic resonance tomography apparatus has at least one control arrangement with a comparator and a controller and a control input for a digital control word, by means of which a current transmission function of the control arrangement can be selected from several predetermined transmission functions. A nuclear magnetic resonance tomography apparatus includes such a gradient amplifier, as well as a control word producing source for producing the digital control words. The gradient amplifier and the tomography apparatus can easily be adjusted to different controller characteristics, without the changeover requiring a manual calibration.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.