In vivo blood flow visualization with magnetic resonance imaging

2002 ◽  
Author(s):  
G.Z. Yang ◽  
P. Burger ◽  
P.J. Kilner ◽  
R.H. Mohiaddin
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Magnetic Resonance ◽  
Flow Visualization ◽  
Resonance Imaging

scholarly journals Four-Dimensional Flow Magnetic Resonance Imaging and Applications in Cardiology

2021 ◽  
Author(s):  
Patrick Geeraert ◽  
Hansuk Kim ◽  
Safia Ihsan Ali ◽  
Ashifa Hudani ◽  
Shirin Aliabadi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
4D Flow Mri ◽  
4D Flow ◽  
Great Vessels ◽  
Flow Mri ◽  
Magnetic Resonance Imaging Mri

Blood flow through the heart and great vessels moves in three dimensions (3D) throughout time. However, the assessment of its 3D nature has been limited in the human body. Recent advances in magnetic resonance imaging (MRI) allow for the comprehensive visualization and quantification of in-vivo flow dynamics using four-dimensional (4D) flow MRI. In addition, this technique provides the opportunity to obtain advanced hemodynamic biomarkers such as vorticity, helicity, wall shear stress (WSS), pressure gradients, viscous energy loss (EL), and turbulent kinetic energy (TKE). This chapter will introduce 4D flow MRI which is currently used for blood flow visualization and advanced quantification of cardiac hemodynamic biomarkers. We will discuss its advantages relative to other in-vivo flow imaging techniques and describe its potential clinical applications in cardiology.

Measurement of Local Cerebral Blood Flow By Magnetic Resonance Imaging: In Vivo Autoradiographic Strategy Using 17O-Labeled Water

1998 ◽  
Vol 45 (5) ◽  
pp. 451-456 ◽  
Author(s):  
Toshiyuki Arai ◽  
Shin-ichi Nakao ◽  
Shigehiro Morikawa ◽  
Toshiro Inubushi ◽  
Takashi Yokoi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Local Cerebral Blood Flow

scholarly journals In vivo assessment of myocardial blood flow in rat heart using magnetic resonance imaging: Effect of anesthesia

2005 ◽  
Vol 22 (2) ◽  
pp. 242-247 ◽  
Author(s):  
Isabelle Iltis ◽  
Frank Kober ◽  
Christiane Dalmasso ◽  
Carole Lan ◽  
Patrick J. Cozzone ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Magnetic Resonance ◽  
Myocardial Blood Flow ◽  
Rat Heart ◽  
Resonance Imaging ◽  
In Vivo Assessment

Functional Magnetic Resonance Imaging Measures of Blood Flow Patterns in the Human Auditory Cortex in Response to Sound

1998 ◽  
Vol 41 (3) ◽  
pp. 538-548 ◽  
Author(s):  
Sean C. Huckins ◽  
Christopher W. Turner ◽  
Karen A. Doherty ◽  
Michael M. Fonte ◽  
Nikolaus M. Szeverenyi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Blood Flow ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Speech Stimuli ◽  
Complex Stimuli ◽  
Scanning Session ◽  
Auditory Research

Functional Magnetic Resonance Imaging (fMRI) holds exciting potential as a research and clinical tool for exploring the human auditory system. This noninvasive technique allows the measurement of discrete changes in cerebral cortical blood flow in response to sensory stimuli, allowing determination of precise neuroanatomical locations of the underlying brain parenchymal activity. Application of fMRI in auditory research, however, has been limited. One problem is that fMRI utilizing echo-planar imaging technology (EPI) generates intense noise that could potentially affect the results of auditory experiments. Also, issues relating to the reliability of fMRI for listeners with normal hearing need to be resolved before this technique can be used to study listeners with hearing loss. This preliminary study examines the feasibility of using fMRI in auditory research by performing a simple set of experiments to test the reliability of scanning parameters that use a high resolution and high signal-to-noise ratio unlike that presently reported in the literature. We used consonant-vowel (CV) speech stimuli to investigate whether or not we could observe reproducible and consistent changes in cortical blood flow in listeners during a single scanning session, across more than one scanning session, and in more than one listener. In addition, we wanted to determine if there were differences between CV speech and nonspeech complex stimuli across listeners. Our study shows reproducibility within and across listeners for CV speech stimuli. Results were reproducible for CV speech stimuli within fMRI scanning sessions for 5 out of 9 listeners and were reproducible for 6 out of 8 listeners across fMRI scanning sessions. Results of nonspeech complex stimuli across listeners showed activity in 4 out of 9 individuals tested.

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