Excitation overturn angle determination method of multilayer parallel excitation dispersion imaging and apparatus thereof

A technology for flipping angles and determining methods, which is applied to measuring devices, measuring magnetic variables, instruments, etc., and can solve problems affecting image contrast and longitudinal magnetization vectors that cannot be fully restored
CN107219484APending Publication Date: 2017-09-29SIEMENS SHENZHEN MAGNETIC RESONANCE
11 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
SIEMENS SHENZHEN MAGNETIC RESONANCE
Publication Date
2017-09-29

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

An embodiment of the invention discloses an excitation overturn angle determination method of multilayer parallel excitation dispersion imaging and an apparatus thereof. The method comprises the following steps of determining a first area to be imaged and a second area to be imaged, wherein the first area to be imaged and the second area to be imaged possess different longitudinal relaxation time; determining an image contrast function between the first area to be imaged and the second area to be imaged when the multilayer parallel excitation dispersion imaging is executed; and based on the image contrast function, determining an excitation overturn angle of a dispersion weight sequence. In the embodiment of the invention, when the multilayer parallel excitation dispersion imaging is executed, an imaging organization contrast which is the same with or is similar to single-layer excitation dispersion imaging can be acquired.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of diffusion imaging, in particular to a method and a device for determining an excitation flip angle for multi-layer parallel excitation diffusion imaging. Background technique

[0002] Magnetic Resonance (MR) imaging is a biomagnetic nuclear spin imaging technology developed rapidly with the development of computer technology, electronic circuit technology, and superconductor technology. It uses a magnetic field and radio frequency pulses to vibrate the precessing hydrogen nuclei (ie H+) in human tissue to generate radio frequency signals, which are processed by a computer and imaged. When an object is placed in a magnetic field, it is irradiated with appropriate electromagnetic waves to make it resonate, and then the electromagnetic waves released by it are analyzed, and the position and type of the atomic nuclei that make up the object can be known, and the precise interior of the object can be drawn acc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More