18035301. SPIN ECHO MR IMAGING WITH SPIRAL ACQUISITION simplified abstract (KONINKLIJKE PHILIPS N.V.)

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SPIN ECHO MR IMAGING WITH SPIRAL ACQUISITION

Organization Name

KONINKLIJKE PHILIPS N.V.

Inventor(s)

Miha Fuderer of Bunnik (NL)

SPIN ECHO MR IMAGING WITH SPIRAL ACQUISITION - A simplified explanation of the abstract

This abstract first appeared for US patent application 18035301 titled 'SPIN ECHO MR IMAGING WITH SPIRAL ACQUISITION

Simplified Explanation

The invention is a method for magnetic resonance (MR) imaging of an object in an MR device. The goal of the invention is to reduce ringing artifacts near strong magnetic field inhomogeneity.

  • The method involves generating a spin echo by subjecting the object to an imaging sequence with RF excitation and refocusing pulses.
  • After the RF refocusing pulse, a modulated readout magnetic field gradient is applied.
  • MR signal data is acquired by recording the spin echo along a spiral trajectory in k-space.
  • The waveform of the readout magnetic field gradient starts before the spin echo center.
  • An MR image is reconstructed from the acquired MR signal data.

The invention also includes an MR device and a computer program for an MR device.

Potential Applications

  • Medical imaging: This method can be used in MR imaging for various medical applications, such as diagnosing diseases and monitoring treatment progress.
  • Research: The method can be applied in scientific research to study the structure and function of different objects, including biological samples and materials.

Problems Solved

  • Reduced ringing artifacts: The method addresses the issue of ringing artifacts that occur near strong magnetic field inhomogeneity. These artifacts can degrade the quality of MR images and affect their diagnostic value.
  • Improved image quality: By reducing ringing artifacts, the method improves the overall image quality, allowing for more accurate interpretation and diagnosis.

Benefits

  • Enhanced diagnostic accuracy: The reduction of ringing artifacts improves the clarity and detail of MR images, leading to more accurate diagnosis and treatment planning.
  • Increased patient comfort: The method enables faster and more efficient MR imaging, reducing the time patients need to spend inside the MR device.
  • Improved research capabilities: Researchers can obtain higher quality MR images, enabling more precise analysis and interpretation of their data.


Original Abstract Submitted

The invention relates to a method of MR imaging of an object () positioned in an examination volume of an MR device (). It is an object of the invention to enable spiral MR imaging with a reduced level of ringing artefacts close to strong local IC main magnetic field inhomogeneity. The method of the invention comprises the following steps: —generating a spin echo by subjecting the object () to an imaging sequence comprising an RF excitation pulse () followed by an RF refocusing pulse (), wherein a modulated readout magnetic field gradient () is applied subsequent to the RF refocusing pulse (), —acquiring MR signal data by recording the spin echo along a spiral trajectory in k-space, wherein the waveform of the readout magnetic field gradient () defining the spiral trajectory starts before the spin echo center (), and —reconstructing an MR image from the acquired MR signal data. Moreover, the invention relates to an MR device () and to a computer program for an MR device ().

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