Nuclear magnetic resonance tomography apparatus with pre-polarization

US5936404A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ralf Ladebeck · Erlangen, DE
• Gregor Bett · Stuttgart, DE

Key dates

• Filing date: May 14, 1997
• Grant date: Aug 10, 1999
• Expiry date: May 14, 2017

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/445
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a nuclear magnetic resonance tomography apparatus wherein imaging is implemented with hyperpolarized gases, a first magnet system having a high field strength for the pre-polarization of the nuclear spins is provided. A gradient system for generating magnetic field gradients and a radio-frequency arrangement for the excitation of nuclear spins in a subject as well as for the read-out of the arising nuclear magnetic resonance signals are provided in a second magnet system having lower field strength.