A Signal Acquisition Setup for Ultrashort Echo Time Imaging Operating in Parallel on Unmodified Clinical MRI Scanners Achieving an Acquisition Delay of $\text{3}~{\mu}\text{s}$

A Signal Acquisition Setup for Ultrashort Echo Time Imaging Operating in Parallel on Unmodified Clinical MRI Scanners Achieving an Acquisition Delay of $\text{3}~{\mu}\text{s}$
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在未经修改的临床 MRI 扫描仪上并行运行的超短回波时间成像的信号采集设置,实现 $ ext{3}~{mu} ext{s}$ 的采集延迟

DOI:
10.1109/tmi.2019.2924057
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发表时间:
2020
影响因子:
10.6
通讯作者:
Volker Rasche
Volker Rasche
中科院分区:
工程技术1区
文献类型:
--
作者:
Michael Eder;Andreas Horneff;Jan Paul;Alexander Storm;Arthur Wunderlich;Erich Hell;Johannes Ulrici;Jens Anders;Volker Rasche

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临床系统上的超短回波时间成像仍然受到标准前端概念可实现的相当长的射频切换时间的限制。在这方面的贡献,一个独立的并行接收系统接口到未经修改的临床MRI系统,使成像的物种与超短弛豫时间,如骨,肌腱,牙齿,或肺组织。系统的同步通过电子去耦的单向触发线、时钟参考信号和RF脉冲跟踪来实现,从而确保对主机系统的干扰最小。实验表明,该系统的捕获延迟为3 μs。
Ultrashort echo time imaging on clinical systems is still limited by the rather long radio frequency switching times achievable with standard front end concepts. In this contribution, an independent parallel receive-only system is interfaced to an unmodified clinical MRI system, enabling imaging of species with ultrashort relaxation times, such as bone, tendon, teeth, or lung tissue. Synchronization of the system is achieved by an electronically decoupled one-way trigger line, a clock reference signal, and RF pulse tracking, thus ensuring minimal interference with the host system. With the proposed system, an acquisition delay of 3 μs is experimentally demonstrated.
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