Systems and methods for phase-sensitive inversion recovery MR imaging with reduced sensitivity to cardiac motion

US10591568B2 · kind B2 · utility

Assignees

• Siemens Healthcare Limited · DE
• Duke University · US

Inventors

• Wolfgang G. Rehwald · Chapel Hill, US
• David C. Wendell · Durham, US
• Elizabeth R. Jenista · Durham, US
• Enn-Ling Chen · Chapel Hill, US
• Raymond J. Kim · Chapel Hill, US

Key dates

• Filing date: Jun 15, 2017
• Grant date: Mar 17, 2020
• Expiry date: Feb 28, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/56325
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A magnetic resonance imaging system and method are provided for improved phase-sensitive magnetic resonance imaging of tissues affected by cardiovascular pulsatile motion. A magnetically-prepared image dataset and corresponding reference image dataset (for phase sensitivity) are obtained within the duration of a single cardiac cycle. The paired datasets can be single-shot or segmented datasets and a navigator sequence can optionally be provided with each paired dataset. The system and method take advantage of the shape symmetry of the cardiac cycle to acquire the paired dataset in a shorter time interval, thereby reducing misregistration artifacts. The magnetic preparation can include inversion recovery pulses, FIDDLE sequences, other magnetic preparation sequences, or combinations thereof. The reference dataset can be acquired at a lower resolution than the corresponding magnetically-prepared dataset without compromising image quality.