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Motion Artifact Correction in ASL images: An Improved Automated Procedure

机译:ASL图像中的运动伪影校正:一种改进的自动化程序

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Arterial Spin Labelling (ASL) is a perfusion MRI technique with tremendous applications in the study of biological markers and prognostic factors of brain tumors and in the assessment of neural diseases, moreover, it is completely non-invasive as it uses the magnetically inverted blood of the patient as an endogenous tracer. Unfortunately this powerful method is only viable in very limited conditions due to its extreme sensitivity to artifacts originated by head motion, that are not effectively addressed by the current software solutions. This paper presents a motion correction procedure that addresses this issue and provides improved solutions to enhance ASL images of the brain in presence of severe head motion. Experimental results run on a motion-affected pCASL dataset show the concept and demonstrate the superiority of our proposed procedure compared to standard 3D registration.
机译:动脉自旋标记(ASL)是一种灌注MRI技术,在脑肿瘤的生物标志物和预后因素的研究以及神经疾病的评估中具有巨大的应用,而且由于它使用了磁性倒置血液,因此它是完全无创的。病人作为内源示踪剂。不幸的是,这种强大的方法仅在非常有限的条件下才可行,因为它对由头部运动引起的伪像具有极高的敏感性,而当前软件解决方案无法有效解决这些伪像。本文提出了一种运动校正程序,可以解决这个问题,并提供改进的解决方案,以增强在出现严重头部运动时大脑的ASL图像。在受运动影响的pCASL数据集上运行的实验结果证明了这一概念,并证明了与标准3D注册相比,我们提出的程序的优越性。

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