Title:
METHOD AND SYSTEM FOR SIMULATING ARTIFACT IN MAGNETIC RESONANCE ECHO-PLANAR IMAGING
Document Type and Number:
WIPO Patent Application WO/2024/083112
Kind Code:
A1
Abstract:
Disclosed are a method and system for simulating an artifact in magnetic resonance echo-planar imaging. First, in respect of K-space artifacts, K-space data is restored by using normal magnetic resonance images, the K-space data is modified in a targeted manner, and then an image having an artifact is reconstructed; and in respect of magnetization artifacts, a magnetization model is constructed by using normal magnetic resonance images, a magnetic field distribution is reconstructed, and then an image having a distortion artifact is reconstructed. According to the present invention, a large number of artifact data sets of different artifact types and artifact degrees can be quickly created by using a small number of normal images, to lay a foundation for research on identifying, eliminating, or reducing artifacts. Compared with other image domain artifact simulation methods, the present invention designs a simulation algorithm according to the principle of EPI sequence artifact generation, and obtained images such as stripe artifacts, Moiré artifacts, Nyquist artifacts, and magnetization artifacts have high scientificity, accuracy, and interpretability.
Inventors:
ZHANG YU (CN)
WANG ZHICHAO (CN)
SUN CHAOLIANG (CN)
ZHANG HUAN (CN)
QIAN HAOTIAN (CN)
ZHANG JUNYANG (CN)
JIANG TIANZI (CN)
WANG ZHICHAO (CN)
SUN CHAOLIANG (CN)
ZHANG HUAN (CN)
QIAN HAOTIAN (CN)
ZHANG JUNYANG (CN)
JIANG TIANZI (CN)
Application Number:
PCT/CN2023/124933
Publication Date:
April 25, 2024
Filing Date:
October 17, 2023
Export Citation:
Assignee:
ZHEJIANG LAB (CN)
International Classes:
G06T11/00
Domestic Patent References:
| WO2018184056A1 | 2018-10-11 |
Foreign References:
| CN115359144A | 2022-11-18 | |||
| CN109741409A | 2019-05-10 | |||
| CN110095742A | 2019-08-06 | |||
| CN101153896A | 2008-04-02 | |||
| US20080175458A1 | 2008-07-24 | |||
| US6700374B1 | 2004-03-02 | |||
| US20020167315A1 | 2002-11-14 | |||
| US5869965A | 1999-02-09 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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