Results 31 to 40 of about 16,886 (302)

Quantifying CBF with arterial spin labeling [PDF]

Journal of Magnetic Resonance Imaging, 2005
AbstractThe basic principles of measuring cerebral blood flow (CBF) using arterial spin labeling (ASL) are reviewed. The measurement is modeled by treating the ASL method as a magnetic resonance imaging (MRI) version of a microsphere study, rather than a diffusible tracer study. This approach, particularly when applied to pulsed ASL (PASL) experiments,
openaire   +2 more sources

Pulsed Continuous Arterial Spin Labeling

, 2022
Continuous labeling by flow driven adiabatic inversion is advantageous for arterial spin labeling (ASL) perfusion studies, but details of the implementation, including inefficiency, magnetization transfer, and limited support for continuous-mode ...
Dai, Weiying, Garcia, Dairon, de Bazelaire, Cedric, Alsop, David   +3 more
core   +1 more source

Physiological Modulations in Arterial Spin Labeling Perfusion Magnetic Resonance Imaging

, 2010
The purpose of this study is to evaluate cardiac and respiratory modulations in the signals of arterial spin labeling (ASL) perfusion magnetic resonance imaging (MRI) using RETROICOR, an image domain based retrospective correction method.
Wu, Wen-Chau; Edlow, B.L.; Elliot, M.A.; Wang, M.A. Jiongjiong; Detre, J.A., 吳文超   +1 more
core   +1 more source

Hadamard Encoded Arterial Spin Labeling

, 2021
Creating images of the transit delay from the labeling location to image tissue can aid the optimization and quantification of arterial spin labeling (ASL) perfusion measurements and may provide diagnostic information independent of perfusion ...
Shankaranarayanan, Ajit, Dai, Weiying, Alsop, David   +2 more
core   +1 more source

Arterial Spin Labeling: Experiência Inicial, Indicações Clínicas e Dificuldades

Acta Médica Portuguesa, 2012
O arterial spin labeling (ASL) é uma técnica de perfusão por ressonância magnética (RM) que usa os protões das moléculas de água do sangue arterial como marcador endógeno.
Angelo Carneiro, Sofia Pina, Bruno Moreira   +2 more
doaj   +1 more source

Imaging clinically relevant pain states using arterial spin labeling

PAIN Reports, 2019
. Arterial spin labeling (ASL) is a perfusion-based functional magnetic resonance imaging technique that uses water in arterial blood as a freely diffusible tracer to measure regional cerebral blood flow noninvasively.
Marco Luciano Loggia, Andrew Reilly Segerdahl, Matthew Alexander Howard, Irene Tracey   +3 more
doaj   +1 more source

Brain Tumor Vascularity Estimation by Arterial Spin Label Perfusion MRI—A Preoperative Tool for Patient Prognostication

Indian Journal of Neurosurgery, 2023
Introduction Brain tumors remain a significant cause of morbidity and mortality around the globe. Preoperative estimation of tumor vascularity is of great significance for a neurosurgeon. Aim of our study was to correlate tumor blood flow (TBF)
Nidhi Rai, Rupi Jamwal, Bhanu Pratap Singh, Jyoti Gupta, K. B. Shankar, Sufiyan Zaheer   +5 more
doaj   +1 more source

Exploring label dynamics of velocity-selective arterial spin labeling in the kidney [PDF]

, 2021
Purpose: Velocity-selective arterial spin labeling (VSASL) has been proposed for renal perfusion imaging to mitigate planning challenges and effects of arterial transit time (ATT) uncertainties.
Chrit Moonen, Osch, M.J.P. van, van Osch, Matthias J.P., Moonen, C.T.W. (Chrit), Isabell K. Bones, Moonen, C., Harteveld, A.A. (Anita A.), Bones, Isabell K, Hendrikse, J. (Jeroen), Bos, C., Moonen, Chrit, Harteveld, A.A., Schmid, S. (Sophie), Franklin, Suzanne L, Bos, Clemens, van Stralen, Marijn, Harteveld, Anita A, Franklin, Suzanne L., Franklin, S.L., Bones, I.K. (Isabell K.), Hendrikse, J., Harteveld, Anita A., Bones, Isabell K., Jeroen Hendrikse, van Stralen, M. (Marijn), Hendrikse, Jeroen, Franklin, S.L. (Suzanne L.), Marijn van Stralen, Schmid, Sophie, Bos, C. (Clemens), Schmid, S., Osch, M.J.P. (Matthias J.) van, Anita A. Harteveld, Matthias J. P. van Osch, Suzanne L. Franklin, Bones, I.K., van Osch, Matthias J P, Sophie Schmid, Clemens Bos, Stralen, M. van   +39 more
core   +1 more source

Arterial spin labeling of nasopharyngeal carcinoma shows early therapy response

Insights into Imaging, 2022
Objective This study aimed to determine the value of arterial spin labeling (ASL) perfusion imaging in assessing the early efficacy of chemoradiotherapy for nasopharyngeal carcinoma (NPC).
Jun Liu, Juan Zhu, Yaxian Wang, Fei Wang, Hualin Yang, Nan Wang, Qingyun Chu, Qing Yang   +7 more
doaj   +1 more source

Measuring the labeling efficiency of pseudocontinuous arterial spin labeling

Magnetic Resonance in Medicine, 2016
PurposeOptimization and validation of a sequence for measuring the labeling efficiency of pseudocontinuous arterial spin labeling (pCASL) perfusion MRI.MethodsThe proposed sequence consists of a labeling module and a single slice Look‐Locker echo planar imaging readout.
Chen, Z.S., Zhang, X.X., Yuan, C., Zhao, X.H., Osch, M.J.P. van   +4 more
openaire   +3 more sources