Results 71 to 80 of about 66,223 (392)

Stroke penumbra defined by an MRI-based oxygen challenge technique: 1. validation using [14C]2-deoxyglucose autoradiography [PDF]

, 2011
Accurate identification of ischemic penumbra will improve stroke patient selection for reperfusion therapies and clinical trials. Current magnetic resonance imaging (MRI) techniques have limitations and lack validation.
Barrie Condon, Celestine Santosh, Christopher McCabe, Craig A Robertson, I Mhairi Macrae, Keith W Muir, Kucinski T, Lindsay Gallagher, Maria del Rosario Lopez-Gonzalez, William M Holmes   +9 more
core   +1 more source

From In‐Silico Optimized Microfabrication to Experimental Validation: Engineering a Tridimensional Epi‐Intraneural Interface

Advanced Functional Materials, EarlyView.
An epi‐intraneural interface is developed through in silico optimization and a novel tridimensional microfabrication pipeline. The device integrates penetrating and epineural contacts on a flexible substrate. Mechanical, electrochemical, and in vivo testing in rat and pig reveal robust implantation, low‐threshold activation, and site‐dependent ...
Federico Ciotti, Andrea Cimolato, Noemi Gozzi, Pietro Palopoli, Luca Brugnoli, Natalija Katic Secerovic, Rebecca Gallivan, Alexander Shokurov, Carlo Menon, Johannes Weichart, Ignacio Delgado‐Martinez, Weiguo Song, Stavros Zanos, Xavier Navarro, Stanisa Raspopovic   +14 more
wiley   +1 more source

Improved velocity‐selective‐inversion arterial spin labeling for cerebral blood flow mapping with 3D acquisition

Magnetic Resonance in Medicine, 2020
To further optimize the velocity‐selective arterial spin labeling (VSASL) sequence utilizing a Fourier‐transform based velocity‐selective inversion (FT‐VSI) pulse train, and to evaluate its utility for 3D mapping of cerebral blood flow (CBF) with a ...
Dapeng Liu, Feng Xu, Wenbo Li, P. van Zijl, D. Lin, Q. Qin   +5 more
semanticscholar   +1 more source

Noninvasive in vivo assessment of placental insufficiency using pCASL: a prospective case–control study

The Egyptian Journal of Radiology and Nuclear Medicine
Background Arterial spin labeling is a noninvasive imaging modality that does not use contrast for evaluation of placental perfusion in the placental pathological conditions.
Ghada Awad, Alaa Mohamed Reda, Rasha Lotfy Younis, Manal Mostafa Hassan, Rania Essam Eldin Mohamed Ali   +4 more
doaj   +1 more source

Angiografía no contrastada con "Arterial Spin Labeling"

Revista Chilena de Radiología
Introducción: La angiografía por resonancia magnética no contrastada realizada con "Arterial Spin Labeling" (ARM ASL) es un método diseñado para marcar los espines sanguíneos y así crear un contraste endógeno adecuado para evaluar territorios vasculares ...
Jorge Delgado, Simón Rascovsky, Victor Calvo, Fredy López, Bernd Foerster, Gabriel Castrillón   +5 more
doaj   +1 more source

Changes in arterial cerebral blood volume during lower body negative pressure measured with MRI [PDF]

, 2019
Cerebral Autoregulation (CA), defined as the ability of the cerebral vasculature to maintain stable levels of blood flow despite changes in systemic blood pressure, is a critical factor in neurophysiological health.
Babic, Adele, Bright, Molly G., Driver, Ian D., Khot, Sharmila, Murphy, Kevin, Whittaker, Joseph R.   +5 more
core   +1 more source

Targeting the ARRDC3–DRP1 Axis via hUMSC‐Derived Exosomal CRYAB for Neuroprotection in Cerebral Ischemia/Reperfusion Injury

Advanced Healthcare Materials, EarlyView.
Intranasally administered hUMSC‐derived exosomes modulate the CRYAB–ARRDC3–Drp1 axis, alleviating mitochondrial dysfunction and ferroptosis, enhancing neuronal survival, reducing oxidative stress, and promoting functional recovery in ischemia‐reperfusion injury, offering a promising therapeutic strategy for ischemic stroke.
Rong ji, Zengyu Zhang, Zhuohang Liu, Kaicheng Yang, Xueyu Mao, Min Chu, Yong Wang, Jing Zhao   +7 more
wiley   +1 more source

Systematic evaluation of velocity‐selective arterial spin labeling settings for placental perfusion measurement

Magnetic Resonance in Medicine, 2020
Placental function is key for successful human pregnancies. Perfusion may be a sensitive marker for the in vivo assessment of placental function. Arterial spin labeling (ASL) MRI enables noninvasive measurement of tissue perfusion and it was recently ...
A. Harteveld, J. Hutter, Suzanne L Franklin, Laurence H. Jackson, M. Rutherford, J. Hajnal, M. V. van Osch, C. Bos, Enrico De Vita   +8 more
semanticscholar   +1 more source

Reliability and reproducibility of perfusion MRI in cognitively normal subjects [PDF]

, 2010
Arterial spin labeling (ASL) magnetic resonance imaging (MRI) is becoming a popular method for measuring perfusion due to its ability of generating perfusion maps noninvasively.
Albert, M, Chodkowski, B, Donahue, MJ, Jiang, L, Kim, M, Pekar, JJ, Van Zijl, PCM   +6 more
core   +1 more source

Smart Catheters for Diagnosis, Monitoring, and Therapy

Advanced Healthcare Materials, EarlyView.
This study presents a comprehensive review of smart catheters, an emerging class of medical devices that integrate embedded sensors, robotics, and communication systems, offering increased functionality and complexity to enable real‐time health monitoring, diagnostics, and treatment. Abstract This review explores smart catheters as an emerging class of
Azra Yaprak Tarman, Samiha Ahmed, Majed Othman Althumayri, Megan Guy, Darlenne Chavez Lugo, Frances S. Ligler, George T. Ligler, Rahmi Oklu, Hiroshi Kawahira, Michael J. McShane, Jun Kameoka, Jonathan Bova, Hatice Ceylan Koydemir   +12 more
wiley   +1 more source