Arterial spin-labeling in routine clinical practice, part 1: technique and artifacts.
Arterial spin-labeling in routine clinical practice, part 1: technique and artifacts.
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DOI：
10.3174/ajnr.a1030
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发表时间：
2008-08
期刊：
影响因子：
--
通讯作者：
Maldjian JA
中科院分区：
文献类型：
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作者：
Deibler AR;Pollock JM;Kraft RA;Tan H;Burdette JH;Maldjian JA
动脉自旋标记（ASL）在临床人群中的常规使用导致了不同脑病理特征的描述。这类人群在获取、后处理和分析脑血流量（CBF）图方面遇到了独特的挑战，通过注意质量控制和使用专用的后处理管道，可以始终如一地生成高质量的ASL CBF图。熟悉经常遇到的工件可以帮助避免CBF映射解释中的陷阱。本综述的目的是描述我们在异质ASL灌注病例收集方面的经验，重点是方法和该技术遇到的常见伪影。在1年的时间里，超过3000例脉冲ASL病例在1.5 t和3T时作为常规临床脑MR评估的组成部分。对这些ASL研究的最终灰度DICOM图像和彩色联合摄影专家组（JPEG） CBF图的整体图像质量和灌注模式进行了分析，并对常见的伪影及其对最终图像质量的影响进行了分类。
The routine use of arterial spin-labeling (ASL) in a clinical population has led to the depiction of diverse brain pathologic features. Unique challenges in the acquisition, postprocessing, and analysis of cerebral blood flow (CBF) maps are encountered in such a population, and high-quality ASL CBF maps can be generated consistently with attention to quality control and with the use of a dedicated postprocessing pipeline. Familiarity with commonly encountered artifacts can help avoid pitfalls in the interpretation of CBF maps. The purpose of this review was to describe our experience with a heterogeneous collection of ASL perfusion cases with an emphasis on methodology and common artifacts encountered with the technique. In a period of 1 year, more than 3000 pulsed ASL cases were performed as a component of routine clinical brain MR evaluation at both 1.5 and 3T. These ASL studies were analyzed with respect to overall image quality and patterns of perfusion on final gray-scale DICOM images and color Joint Photographic Experts Group (JPEG) CBF maps, and common artifacts and their impact on final image quality were categorized.