High-Performance Computing MRI Simulations
High-Performance Computing MRI Simulations
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DOI：
10.1002/mrm.22406
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发表时间：
2010-07-01
影响因子：
3.3
通讯作者：
Shah, N. Jon
中科院分区：
文献类型：
--
作者：
Stoecker, Tony;Vahedipour, Kaveh;Shah, N. Jon
介绍了一个新的开源软件项目--Julich Extensible MRI Simator JEMRIS，它为MRI社区提供了一个MRI序列开发和仿真环境。这一发展是由实现反映现代MRI系统硬件的模拟三维MRI实验的通用性的愿望推动的。伴随而来的计算负担是通过并行计算来克服的。它涵盖了许多迄今为止在常规MRI模拟中尚未同时研究的方面，如并行发射和接收、重要的非共振效应、非线性梯度以及不同水平上的任意时空参数变化。例如，后者可用于模拟各种类型的运动。JEMRIS用户界面使用起来非常简单，但它几乎没有什么限制。具有任意波形和复杂的相互依赖的模块的MRI序列在基于图形用户界面的环境中建模，不需要进一步编程。这份手稿描述了软件的概念、方法和性能。给出了核磁共振研究活跃领域中新的模拟结果的例子。《医学杂志》：第186-193页，2010年。(C)2010年Wiley-Liss公司
A new open-source software project is presented, JEMRIS, the Julich Extensible MRI Simulator, which provides an MRI sequence development and simulation environment for the MRI community. The development was driven by the desire to achieve generality of simulated three-dimensional MRI experiments reflecting modern MRI systems hardware. The accompanying computational burden is overcome by means of parallel computing. Many aspects are covered that have not hitherto been simultaneously investigated in general MRI simulations such as parallel transmit and receive, important off-resonance effects, nonlinear gradients, and arbitrary spatiotemporal parameter variations at different levels. The latter can be used to simulate various types of motion, for instance. The JEMRIS user interface is very simple to use, but nevertheless it presents few limitations. MRI sequences with arbitrary waveforms and complex interdependent modules are modeled in a graphical user interface-based environment requiring no further programming. This manuscript describes the concepts, methods, and performance of the software. Examples of novel simulation results in active fields of MRI research are given. Magn Reson Med 64:186-193, 2010. (C) 2010 Wiley-Liss, Inc.