Magnetic resonance imaging of short T.sub.2 species

US5025216A · kind A · utility

Assignee

• The Board of Trustees of the Leland Stanford Junior University · US

Inventors

• John M. Pauly · Stanford, US
• Dwight G. Nishimura · Palo Alto, US

Key dates

• Filing date: Jul 28, 1989
• Grant date: Jun 18, 1991
• Expiry date: Jul 28, 2009

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/50
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Magnetic resonance signals for imaging species having short spin-spin relaxation times (T.sub.2) are obtained without the need for a refocusing lobe. A series of RF excitation pulses are applied to the species with magnetic resonance signals being detected after each RF excitation pulse is applied. The magnetic resonance signals are then combined to provide the imaging signals. In one embodiment, each RF excitation pulse is half of a conventional slice-selective pulse with each pulse being slewed to zero.