发明授权
- 专利标题: Method and magnetic resonance system for diffusion-weighted acquisition of MR signals
- 专利标题(中): MR信号扩散加权采集方法及磁共振系统
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申请号: US12773121申请日: 2010-05-04
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公开(公告)号: US08436613B2公开(公告)日: 2013-05-07
- 发明人: Thorsten Feiweier
- 申请人: Thorsten Feiweier
- 申请人地址: DE Munich
- 专利权人: Siemens Aktiengesellschaft
- 当前专利权人: Siemens Aktiengesellschaft
- 当前专利权人地址: DE Munich
- 代理机构: Schiff Hardin LLP
- 优先权: DE102009019895 20090504
- 主分类号: G01V3/00
- IPC分类号: G01V3/00
摘要:
In a method for diffusion-weighted acquisition of MR signals with an acquisition sequence that includes a diffusion module with multiple diffusion coding gradients and a readout module with readout gradients to acquire the MR signals, the acquisition sequence is configured to acquire MR signals that correspond to a predetermined signal coherence path. The method includes the acquisition of MR signals with the acquisition sequence, and the diffusion coding gradients are activated with predetermined gradient moments during the acquisition sequence. The gradient moments of the diffusion coding gradients are set such that MR signals that correspond to other coherence paths than the predetermined coherence path are reduced, wherein the adjustment of the gradient moments to achieve a predetermined reduction ensues on the basis of a threshold.
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