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Abstract：
The 2015 consensus statement published by the International Society for Magnetic Resonance in Medicine (ISMRM) Perfusion Study Group and the European Cooperation in Science and Technology ( COST) Action ASL in Dementia aimed to encourage the implementation of robust arterial spin labeling (ASL) perfusion MRI for clinical applications and promote consistency across scanner types, sites, and studies. Subsequently, the recommended 3D pseudo-continuous ASL sequence has been implemented by most major MRI manufacturers. However, ASL remains a rapidly and widely developing field, leading inevitably to further divergence of the technique and its associated terminology, which could cause confusion and hamper research reproducibility. On behalf of the ISMRM Perfusion Study Group, and as part of the ISMRM Open Science Initiative for Perfusion Imaging (OSIPI), the ASL Lexicon Task Force has been working on the development of an ASL Lexicon and Reporting Recommendations for perfusion imaging and analysis, aiming to (1) develop standardized, consensus nomenclature and terminology for the broad range of ASL imaging techniques and parameters, as well as for the physiological constants required for quantitative analysis; and (2) provide a community-endorsed recommendation of the imaging parameters that we encourage authors to include when describing ASL methods in scientific reports/papers. In this paper, the sequences and parameters in (pseudo-)continuous ASL, pulsed ASL, velocity-selective ASL, and multi-timepoint ASL for brain perfusion imaging are included. However, the content of the lexicon is not intended to be limited to these techniques, and this paper provides the foundation for a growing online inventory that will be extended by the community as further methods and improvements are developed and established.
摘要：
国际医学磁共振学会（ISMRM）灌注研究小组和欧洲科学技术合作（COST）行动ASL在痴呆症中发表的2015年共识声明旨在鼓励实施强大的动脉自旋标记（ASL）灌注MRI临床应用，并促进扫描仪类型之间的一致性。网站,和研究。随后，推荐的3D伪连续ASL序列已由大多数主要MRI制造商实施.然而,ASL仍然是一个快速而广泛发展的领域，不可避免地导致技术及其相关术语的进一步分歧，这可能会导致混乱和妨碍研究的可重复性。代表ISMRM灌注研究组，作为ISMRM灌注成像开放科学计划（OSIPI）的一部分，ASL词典工作组一直致力于开发用于灌注成像和分析的ASL词典和报告建议，旨在(1)制定标准化，广泛的ASL成像技术和参数的一致命名法和术语，以及定量分析所需的生理常数；（2）提供社区认可的成像参数建议，我们鼓励作者在科学报告/论文中描述ASL方法时包括这些参数。在本文中,(伪)连续ASL中的序列和参数，脉冲ASL,速度选择性ASL，包括用于脑灌注成像的多时间点ASL。然而,词典的内容并不限于这些技术，本文为不断增长的在线清单提供了基础，随着进一步的方法和改进的发展和建立，该清单将由社区扩展。
