Magnetic resonance imaging of an object with a first and a second material
AssigneeSiemens Healthcare GmbH
InventorsDominik Paul, Mario Zeller, Kun Zhou
Life of this patent
Estimating the term…
Abstract
Techniques are disclosed for use in magnetic resonance imaging (MRI) for exciting spins of a first material and spins of a second material. A first spin echo signal is acquired when the excited spins include a first phase difference, which is given by Δ, and a second spin echo signal is acquired when the excited spins of the first material and the excited spins of the second material include a second phase difference, which is given by −Δ. An absolute value of Δ lies within the interval ]0,π[. A first image for the first material and/or a second image for the second material is generated by a computing unit depending on the first spin echo signal and the second spin echo signal.
Claims15
A method for magnetic resonance imaging of an object, comprising:
- exciting spins of a first material of the object;
- exciting spins of a second material of the object;
- acquiring a first spin echo signal when the excited spins of the first material of the object and the excited spins of the second material of the object include a first phase difference, which is represented as Δ;
- acquiring a second spin echo signal;
- and
- generating, via processing circuitry, a first image for the first material of the object and/or a second image for the second material of the object, based upon the first spin echo signal and the second spin echo signal,
- wherein an absolute value of Δ lies within an interval ]0,π[, and
- wherein the second spin echo signal is acquired when the excited spins of the first material of the object and the excited spins of the second material of the object include a second phase difference, which is represented as −Δ.
A magnetic resonance imaging system, comprising:
- a magnetic resonance imaging scanner;
- and
- processing circuitry configured to control the magnetic resonance imaging scanner to cause the magnetic resonance imaging scanner to:
- apply an excitation radio frequency (RF) pulse to excite spins of a first material of an object and spins of a second material of the object;
- acquire a first spin echo signal when the excited spins of the first material of the object and the excited spins of the second material of the object include a first phase difference, which is represented as Δ;
- acquire a second spin echo signal;
- and
- generate a first image for the first material of the object and/or a second image for the second material of the object based upon the first spin echo signal and the second spin echo signal,
- wherein an absolute value of Δ lies within the interval ]0,π[, and
- wherein the second spin echo signal is acquired when the excited spins of the first material of the object and the excited spins of the second material of the object include a second phase difference, which is represented as −Δ.
A non-transitory computer-readable medium identified with a magnetic resonance imaging system having instructions stored thereon that, when executed by one or more processors of the magnetic resonance imaging system, cause the magnetic resonance imaging system to:
- apply an excitation radio frequency (RF) pulse to excite spins of a first material of an object and spins of a second material of the object;
- acquire a first spin echo signal when the excited spins of the first material of the object and the excited spins of the second material of the object include a first phase difference, which is represented as Δ;
- acquire a second spin echo signal;
- and
- generate a first image for the first material of the object and/or a second image for the second material of the object based upon the first spin echo signal and the second spin echo signal,
- wherein an absolute value of Δ lies within the interval ]0,π[, and
- wherein the second spin echo signal is acquired when the excited spins of the first material of the object and the excited spins of the second material of the object include a second phase difference, which is represented as −Δ.
Dependencies are inferred from the claim text.