Results 71 to 80 of about 16,886 (302)

Complex-valued analysis of arterial spin labeling–based functional magnetic resonance imaging signals [PDF]

, 2009
Cerebral blood flow-dependent phase differences between tagged and control arterial spin labeling images are reported. A biophysical model is presented to explain the vascular origin of this difference.
Vazquez, Alberto L., Hernandez-Garcia, Luis, Rowe, Daniel B.   +2 more
core   +1 more source

Injectable Hydrogel with Rapid Coagulation, Low Swelling, and High Burst Pressure Tolerance Properties for Long‐Term Management of Bleeding Wound

Advanced Science, EarlyView.
An injectable PACmC hydrogel with “rigid island‐flexible chain” architecture is developed, featuring low swelling (49.2% within 7 d), strong wet adhesion (46.5 kPa), and high burst pressure (701 mm Hg), which can achieve rapid hemostasis and long‐term sealing in rabbit and porcine models of hepatic and splenic hemorrhage.
Yang Ouyang, Wenfeng Qiu, Weiwen Liang, Xin Zhang, Weijie Liu, Zixin Chen, Yifei Li, Hui Wang, Youchen Tang, Min Li, Rongkang Huang, Zijian Chen, Binghua Ma   +12 more
wiley   +1 more source

Arterial Spin Labeling MRI Data Analyzation

, 2015
This bachelor´s thesis is focusing mostly on perfusion imagining, which is done by the method of arterial spin labeling. It describes physical basics of nuclear magnetic resonance, image reconstruction, perfusion imagining without contrast substances ...
Galanová, Zuzana
core   +1 more source

Applications of arterial spin labeled MRI in the brain [PDF]

Journal of Magnetic Resonance Imaging, 2012
AbstractPerfusion provides oxygen and nutrients to tissues and is closely tied to tissue function while disorders of perfusion are major sources of medical morbidity and mortality. It has been almost two decades since the use of arterial spin labeling (ASL) for noninvasive perfusion imaging was first reported.
John A, Detre, Hengyi, Rao, Danny J J, Wang, Yu Fen, Chen, Ze, Wang   +4 more
openaire   +2 more sources

Topologically Structured PLLA Fibers With Stress Concentration Effects for Health Monitoring

Advanced Science, EarlyView.
In this study, a multi‐path strategy was developed to enhance the piezoelectric properties of PLLA fibers through the stress concentration effect. The optimized devices generate piezoelectric output up to 14 times that of pure PLLA fibers. This piezoelectric enhancement strategy offers a new approach for high‐performance piezoelectric devices, with ...
Longfei Li, Juwei Yang, Yiqian Wang, Qiao Yu, Zhenmin Fan, Chang Zhu, Ming Yin, Wei Hua, Zhou Li   +8 more
wiley   +1 more source

Arterial spin labeling for moyamoya angiopathy: A preoperative and postoperative evaluation method

Translational Neuroscience, 2023
Studies have shown that arterial spin labeling (ASL) effectively replaces traditional MRI perfusion imaging for detecting cerebral blood flow (CBF) in patients with Moyamoya angiopathy (MMA).
Yuxue Sun, Yan Wang, Bingqian Xue, Hao Liang, Chaoyue Li   +4 more
doaj   +1 more source

Robust Arterial Spin Labeling T2 Measurements [PDF]

, 2012
Perfusion and bolus arrival time are often quantified physiological parameters. By additionally quantifying permeability it is hoped to better understand tissue physiology or monitor small permeability changes in cerebrovascular diseases, which are ...
Kramme, Johanna
core  

Arterial spin labeling angiography using a triple inversion recovery prepulse

, 2011
Arterial spin labeling is a well-known noninvasive angiography technique, which does not necessitate the use of a contrast agent. arterial spin labeling is still clinically underused because of several challenges: (1) long scan times because of the need ...
Botnar, Rene M., Botnar, Rene M.; id_orcid, Marcelo E. Andia, Andia, Marcelo E., Rene M. Botnar   +4 more
core   +1 more source

Pathological Mechanism‐Inspired Biomimetic Nano‐Senotherapy for Reversing Experimental Atherosclerosis in ApoE−/− Mice

Advanced Science, EarlyView.
The biomimetic self‐assembly nanomedicine reversing atherosclerosis via senotherapy strategy. ABSTRACT The greatest challenge in atherosclerosis (AS) management lies in achieving lesion reversal, not merely slowing progression. Senescent cell accumulation—driven by continuous generation and apoptotic resistance—perpetuates plaque pathology and ...
Yuhan Tian, Yanrui Yang, Qiuyu Li, Ying Hu, Qin Hu, Shasha Ran, Siyu Zhou, Xiujuan Yang, Shanshan Li, Qixiong Zhang   +9 more
wiley   +1 more source

A Brain‐Penetrant Nanobody Reveals GSK3β‐Driven Proline‐Directed Phosphorylation as a Master Regulator of Ischemic Neurodegeneration

Advanced Science, EarlyView.
A brain‐targeted nanoparticle enables delivery of a therapeutic nanobody (Nb.29E9) that inhibits pathogenic GSK3β signaling. This intervention restores AMPK/mTORC1/TGFβ homeostasis, attenuates neuroinflammation and oxidative stress, and promotes long‐term functional recovery after ischemic stroke.
Lan Li, Muyang Li, Lei Sun, Ying Yang, Yuanshun Wu, Ziyi Yin, Anni Wang, Peiyang Zhou, Shaoxiang Luo, Jian Chen, Jun Qin, Zhibing Ai, Zilong Yuan, Zhiqiang Dong, Min Zhang   +14 more
wiley   +1 more source