Magnetic resonance tomography (MRT) imaging, employing RF receive coils with temporal sensitivity profile modulation

US11378634B2 · kind B2 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Klaus Scheffler · Basel, CH
• Jonas BAUSE · Rötteln, DE
• Alexander LOKTYUSHIN · Rötteln, DE
• Kai Buckenmaier · Messingen, DE

Key dates

• Filing date: Aug 4, 2020
• Grant date: Jul 5, 2022
• Expiry date: Oct 16, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/0042
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of magnetic resonance tomography includes arranging an object in a static magnetic field, subjecting it to radiofrequency (RF) pulses and magnetic field gradients for creating spatial encoding of magnetic resonance signals, acquiring the signals with at least two RF receive coils, each with a self-resonance frequency and a spatially restricted sensitivity profile, and reconstructing an object image. Spatial encoding of the signals by the gradients and the profiles is utilized, wherein the profile of at least one of the coils is subjected to a temporal sensitivity profile modulation while acquiring the signal. The self-resonance frequency of the at least one coil is set within a predetermined receive bandwidth of a constant resonance frequency value during the modulation. The reconstructing further utilizes the modulation for obtaining additional spatial information to the spatial encoding of the signals by the gradients. Furthermore, an MRI device is described.