High-frequency apparatus for nuclear spin tomography

US5473252A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wolfgang Renz · Erlangen, DE
• Markus Vester · Koblenzer Straße, DE

Key dates

• Filing date: May 25, 1994
• Grant date: Dec 5, 1995
• Expiry date: May 25, 2014

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/3642
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A high-frequency apparatus for nuclear spin tomography includes a high-frequency transmitter for exciting nuclear spin in a body to be imaged and a high-frequency receiver for detecting B-field components resulting from the nuclear spin. The high-frequency receiver includes a galvanically-separated local coil device having two antenna loops between which an amplifier unit is connected. The local coil device radiates new B-field components in response to the original B-field components caused by the nuclear spin excitation, with the new B-field components oriented substantially orthogonal to the original B-field components. The new B-field components are then received by an external receiving antenna for subsequent signal processing, ultimately resulting in an image of the body.