抄録
Arterial spin labeling （ASL） is a means of perfusion assessments in magnetic resonance imaging （MRI）. Since ASL uses arterial blood water as an endogenous tracer, it is no need to use contrast agent or irradiation. Therefore, these features make ASL complete non‐invasive and easily accepted in routine clinical practice. Recent prevalence of 3T clinical MRI system has dramatically increased the quality of ASL image along together with the development of ASL techniques. In this paper, we have described the overview of ASL techniques such as labeling scheme, post‐label delay, background signal control, and intra vascular signal suppression. Finally, we have presented some clinical cases with ASL application from our own experience.
