Results 71 to 80 of about 1,150,578 (208)

Reference‐Superimposed Reconstruction (RS‐Recon) for Arterial Spin Labeling

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Conventional arterial spin labeling (ASL) reconstruction suffers from sign‐flipping errors and/or noise bias under strong background suppression (BS), limiting SNR optimization. We propose reference‐superimposed reconstruction (RS‐recon) to enable ideal BS and robust signal recovery.
Jia Guo
wiley   +1 more source

The progress of arterial spin labeling

Zhongguo aizheng zazhi, 2013
As a kind of non-invasive functional magnetic resonance imaging (fMRI) techniques, arterial spin labeling (ASL) takes full advantage of arterial blood as an endogenous tracer to track changes of blood flow caused by lesions and to obtain the ...
黄浩哲, 李文涛
doaj  

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

Arterial spin labeling versus BOLD in direct challenge and drug-task interaction pharmacological fMRI [PDF]

PeerJ, 2014
A carefully controlled study allowed us to compare the sensitivity of ASL (arterial spin labeling) and BOLD (blood oxygen level dependent) fMRI for detecting the effects of the adenosine A2a antagonist tozadenant in Parkinson disease.
Stephanie B. Stewart, Jonathan M. Koller, Meghan C. Campbell, Kevin J. Black   +3 more
doaj   +2 more sources

Clinical utility of arterial spin labeling magnetic resonance imaging in the evaluation of the brain

Journal of Medical Physics, 2023
Introduction: Cerebral blood flow (CBF) is essential for studying the brain in both normal and diseased states. Arterial spin labeling (ASL) is a functional magnetic resonance imaging (MRI) technique that uses arterial water as an endogenous tracer to ...
Harshavardhan Pobbati, Sumit Kumar Ghosh, Deeksha Gautam   +2 more
doaj   +1 more source

Erratum to “Arterial Spin Labeling (ASL) fMRI: Advantages, Theoretical Constrains and Experimental Challenges in Neurosciences” [PDF]

International Journal of Biomedical Imaging, 2012
Cerebral blood flow (CBF) is a well-established correlate of brain function and therefore an essential parameter for studying the brain at both normal and diseased states. Arterial spin labeling (ASL) is a noninvasive fMRI technique that uses arterial water as an endogenous tracer to measure CBF.
Ajna Borogovac, Iris Asllani
openaire   +2 more sources

Update on state‐of‐the‐art for arterial spin labeling (ASL) human perfusion imaging outside of the brain

Magnetic Resonance in Medicine, 2023
AbstractThis review article provides an overview of developments for arterial spin labeling (ASL) perfusion imaging in the body (i.e., outside of the brain). It is part of a series of review/recommendation papers from the International Society for Magnetic Resonance in Medicine (ISMRM) Perfusion Study Group.
Manuel Taso, Veronica Aramendía‐Vidaurreta, Erin K. Englund, Susan Francis, Suzanne Franklin, Ananth J. Madhuranthakam, Petros Martirosian, Krishna S. Nayak, Qin Qin, Xingfeng Shao, David L. Thomas, Zungho Zun, Maria A. Fernández‐Seara   +12 more
openaire   +3 more sources

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  

Calibration‐Free Estimation of Cerebrovascular Reactivity From Resting‐State BOLD fMRI Using Reconstructed Respiratory Fluctuations

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Cerebrovascular reactivity (CVR) provides an important index of vascular health and is conventionally quantified using a hypercapnic gas or breath‐hold challenge in conjunction with blood‐oxygen‐level‐dependent functional magnetic resonance imaging (BOLD‐fMRI).
Abdoljalil Addeh, Ethan Church, Muhammad Mahajna, Karen Ardila, Pattarawut Charatpangoon, Alexander D. Cohen, Yang Wang, Rebecca J. Williams, G. Bruce Pike, M. Ethan MacDonald   +9 more
wiley   +1 more source

A physiological model for interpretation of arterial spin labeling reactive hyperemia of calf muscles. [PDF]

PLoS ONE, 2017
To characterize and interpret arterial spin labeling (ASL) reactive hyperemia of calf muscles for a better understanding of the microcirculation in peripheral arterial disease (PAD), we present a physiological model incorporating oxygen transport, tissue
Hou-Jen Chen, Graham A Wright
doaj   +1 more source