Phase-cycled steady-state free precession imaging

US10145926B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Xiaoming Bi · Oak Park, US
• Yutaka Natsuaki · Los Angeles, US
• Kevin M. Johnson · Madison, US
• Gerhard Laub · Burlingame, US

Key dates

• Filing date: Nov 30, 2015
• Grant date: Dec 4, 2018
• Expiry date: Nov 27, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G16H30/40
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system includes applying, to patient tissue, a first imaging sequence comprising first balanced gradient pulse trains and RF pulses, where phases of successive RF pulses in the first imaging sequence differ by a first pulse phase increment, detecting first signals emitted from the patient tissue in response to the first imaging sequence, and to generate a first image based on the first signals, applying, to the patient tissue, a second imaging sequence comprising second balanced gradient pulse trains and RF pulses, where phases of successive RF pulses in the second imaging sequence differ by a second pulse phase increment different from the first pulse phase increment, detecting second signals emitted from the patient tissue in response to the second imaging sequence, and to generate a second image based on the second signals, applying motion-correction processing to the first image to generate a first motion-corrected image, applying motion-correction processing to the second image to generate a second motion-corrected image, and generating a composite image based on the first motion-corrected image and the second motion-corrected image.