Cerebral Perfusion MRI with Arterial Spin Labeling Technique at 0.5 Tesla

2000 ◽  
Vol 24 (1) ◽  
pp. 124-127 ◽  
Author(s):  
Kazuhiro Tsuchiya ◽  
Shichiro Katase ◽  
Junichi Hachiya ◽  
Tokunori Kimura ◽  
Kenji Yodo
Keyword(s):  
Arterial Spin Labeling ◽  
Cerebral Perfusion ◽  
Spin Labeling ◽  
Perfusion Mri

scholarly journals Mean arterial pressure during cerebral perfusion MRI: An arterial spin‐labeling study in younger and older adults

2020 ◽  
Vol 16 (S3) ◽  
Author(s):  
Isabel J. Sible ◽  
Belinda Yew ◽  
Shubir Dutt ◽  
Yanrong Li ◽  
Jean K. Ho ◽  
...  
Keyword(s):  
Older Adults ◽  
Mean Arterial Pressure ◽  
Arterial Pressure ◽  
Arterial Spin Labeling ◽  
Cerebral Perfusion ◽  
Spin Labeling ◽  
Perfusion Mri

ASL Acquisition Principles

2017 ◽  
Author(s):  
Michael Chappell ◽  
Bradley MacIntosh ◽  
Thomas Okell
Keyword(s):  
Arterial Spin Labeling ◽  
Spin Labeling ◽  
Perfusion Mri ◽  
Making Choices ◽  
Technical Details

A variety of acquisition methods for arterial spin labeling (ASL) perfusion MRI exist, often with different names referring to broadly similar approaches. This chapter outlines the main flavors of ASL in common use, along with their strengths and weaknesses, before finally presenting the current consensus of the community on good acquisition parameters for general use. The chapter considers the choice of labeling (e.g. pseudo-continuous versus pulsed), readout (e.g. 2D versus 3D), the choice of post-label delay, and a number of other solutions to correct for artifacts such as arterial contamination. Avoiding extensive technical details, this chapter seeks to inform the ASL user when making choices about acquisition parameters for the use of ASL and also provides enough terminology to help a new user understand the key parameters that they need to know when presented with a new ASL dataset.

Arterial spin labeling magnetic resonance imaging at short post-labeling delay reflects cerebral perfusion pressure verified by oxygen-15-positron emission tomography in cerebrovascular steno-occlusive disease

2020 ◽  
pp. 028418512091711
Author(s):  
Hiroshi Itagaki ◽  
Yasuaki Kokubo ◽  
Kanako Kawanami ◽  
Shinji Sato ◽  
Yuki Yamada ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Arterial Spin Labeling ◽  
Cerebral Perfusion ◽  
Perfusion Pressure ◽  
Spin Labeling ◽  
Occlusive Disease ◽  
Resonance Imaging ◽  
Arterial Transit Time ◽  
The Right

Background Arterial transit time correction by data acquisition with multiple post-labeling delays (PLDs) or relatively long PLDs is expected to obtain more accurate imaging in cases of the cerebrovascular steno-occlusive disease. However, there have so far been no reports describing the significance of arterial spin labeling (ASL) images at short PLDs regarding the evaluation of cerebral circulation in ischemic cerebrovascular disease. Purpose To clarify the role of short-PLD ASL in cerebrovascular steno-occlusive disease. Material and Methods Fifty-three patients with cerebrovascular steno-occlusive disease were included in this study. All patients underwent ASL magnetic resonance imaging and 15O-PET within two days of each modality. To compare the ASL findings with each parameter of PET, the right-to-left (R/L) ratio, defined as the right middle cerebral artery (MCA) value/left MCA value, was calculated. Results There is a significant correlation between the ASL images at a short PLD and the ratio of cerebral blood flow and cerebral blood volume by 15O-PET, which may accurately reflect the cerebral perfusion pressure. A receiver operating characteristic curve analysis indicated that ASL images at PLD 1000 and 1500 ms were more accurate than at PLD 2000–3000 ms for the detection of a ≥10% change in the PET cerebral blood flow. Conclusion ASL images at shorter PLDs may be useful at least as a screening modality to detect the changes in the cerebral circulation in cerebrovascular steno-occlusive disease. We must evaluate ASL images at multiple PLDs while considering the arterial transit time of each case at present.

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