Multidimensional motion correction in MRI

总结：对象运动仍然是磁共振（MR）成像中的重要问题-自主或生理运动导致图像中的模糊和其他伪影。 目前有一种称为“导航器”的技术，在图像采集期间使用，可以在一维中校正运动。 我们小组一直致力于开发一种三维“导航仪”，以便同时检测所有维度的运动。 我们将面临并努力克服的一些挑战包括确保新导航仪能够足够快地制造，以便不干扰图像的获取，并开发在大脑和心脏成像期间使用它们的技术。 该研究将包括许多步骤，首先是优化导航仪的获取方式，验证准确性并在MRI扫描仪上实现。

Summary: Subject motion remains an important problem in magnetic resonance (MR) imaging - voluntary or physiologic motion causes blurring and other artifacts in the images. Currently there is a technique called a "navigator" that is used during the acquisition of the image that can correct for motion in one dimension. Our group has been working on developing a three-dimensional "navigator" to allow motions in all dimensions to be detected simultaneously. Some of the challenges we will face and work to overcome include the ability to ensure that the new navigators can be made fast enough so as not to interfere with the acquisition of the image and to develop techniques for using them during imaging of brain and heart. The research will include many steps, starting with an optimization of the way the navigators are acquired, verification of the accuracy and implementation on the MRI scanners.