Quantitative Susceptibility Mapping

Abstract

Abstract:

Phase images of magnetic resonance imaging (MRI) contain abundant information about local susceptibility changes among different types of tissues, and getting phase images requires no additional scan time. The diagnosis of cerebrovascular diseases and nervous system diseases may benefit from the quantification of paramagnetic substances in tissues. Quantitative susceptibility mapping (QSM), which uses the local phase information, has become a hot topic in basic and clinical studies. Paramagnetic substances in tissues cause local susceptibility changes and lead to local inhomogeneous magnetic field. However, the reconstruction of susceptibility distribution from induced magnetic field is an ill-posed inverse problem, and there are still many problems to be
solved at present. This article focuses on the theory of QSM, reconstruction methods and its applications in MRI.

Key words: QSM, image reconstruction, background magnetic field, phase image

CLC Number:

O482.53

WANG A-li1，LIN Jian-zhong2，LIU Wei-jun3，CAI Cong-bo3*，CHEN Zhong1.

Quantitative Susceptibility Mapping

[J]. Chinese Journal of Magnetic Resonance.

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