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Flow imaging in vivo using off resonance spin labeling induced by extraneous contrast agent

Jessica A Bastiaansen, Jean-Baptiste Ledoux, Andrew J Coristine, Helene Feliciano, Debora Bonvin, Marijana Mionic, Heinrich Hofmann, Matthias Stuber
2016 Journal of Cardiovascular Magnetic Resonance  
The feasibility of this method was shown in vivo with preliminary data obtained in human volunteers.  ...  in vivo using off resonance spin labeling induced by extraneous contrast agent.  ... 
doi:10.1186/1532-429x-18-s1-p258 fatcat:wuilz2qkpbdb5ftc4otseqjfpm

In vivo detection of reperfused myocardium by nuclear magnetic resonance imaging

Donald L. Johnston, Peter Liu, Bruce R. Rosen, Robert A. Levine, Paul A. Beaulieu, Thomas J. Brady, Robert D. Okada
1987 Journal of the American College of Cardiology  
127 To assess the potential of in vivo nuclear magnetic resonance imaging for the detection of reperfused myocardium , in vivo T2-weighted spin echo images were obtained of dogs at 0.15 tesla.  ...  On sacrifice, the hearts were drained of blood and imaged in situ to determine the effect of in vivo imaging on myocardial signal intensity.  ...  Nuclear magnetic resonance imaging. In vivo and in situ hearts.  ... 
doi:10.1016/s0735-1097(87)80091-8 pmid:3794090 fatcat:lfwrxygpvfehppwbweic2lmihm

Review: magnetic resonance imaging techniques in ophthalmology

Laura Fanea, Andrew J Fagan
2012 Molecular Vision  
Imaging the eye with magnetic resonance imaging (MRI) has proved difficult due to the eye's propensity to move involuntarily over typical imaging timescales, obscuring the fine structure in the eye due  ...  However, advances in MRI technology help to mitigate such drawbacks, enabling the acquisition of high spatiotemporal resolution images with a variety of contrast mechanisms.  ...  the first signs of the disease detected in vivo by magnetic resonance imaging (MRI) and confirmed ex vivo by histology.  ... 
pmid:23112569 pmcid:PMC3482169 fatcat:7hxwr7gp5rbsvp77r4gu4bycsu

Nuclear magnetic resonance imaging and spectroscopy of human brain function

R. G. Shulman, A. M. Blamire, D. L. Rothman, G. McCarthy
1993 Proceedings of the National Academy of Sciences of the United States of America  
The techniques of in vivo magnetic resonance (MR) imaging and spectroscopy have been established over the past two decades.  ...  In MRI measurements of function-Abbreviations: NMR, nuclear magnetic resonance; MRS, magnetic resonance spectroscopy; MRI, magnetic resonance imaging; PET, positron emission tomography; rCBF, regional  ...  ABSTRACT The techniques of in vivo magnetic resonance (MR) imaging and spectroscopy have been established over the past two decades.  ... 
doi:10.1073/pnas.90.8.3127 pmid:8475050 pmcid:PMC46253 fatcat:77hageee2vftfkr5xnfdz5quoe

Techniques for Imaging Vascular Supply of Peripheral Nerves

Alec Giron, Cameron Cox, Brendan MacKay
2021 Journal of Brachial Plexus and Peripheral Nerve Injury  
This review evaluates the evidence regarding historical, current, and emerging techniques for visualizing these vascular structures in vivo and considers their potential application in peripheral nerve  ...  AbstractFew studies have been developed to map the vascular structures feeding peripheral nerves, with the majority using cadaveric models and inadequate sample sizes.  ...  visualizing cerebral blood flow.  ... 
doi:10.1055/s-0041-1731280 fatcat:4qwuikrifrghzijykbzds552fi

Magnetic resonance imaging in the head and neck tumor diagnosis
頭頚部腫よう診断におけるMRI(magnetic resonance imaging)の有用性

1987 Nippon Jibiinkoka Gakkai Kaiho  
MRI (magnetic resonance imaging) is a new diagnostic technique that is being applied to study disease processes that involve the upper aero-digestive tract and cranial nerves of interest to otolaryngologist  ...  Seventy four patients with head and neck tumor were enrolled to study the diagnostic efficacy of MRI in comparison with X-ray computed tomography (X-ray CT).  ...  Radiology 159: 195-199, 1986. 16) Mills CM et al: Nuclear magnetic resonance: principles of blood flow imaging. AJR 142: 165- 170, 1984. 17) Hilal SK et al:  ... 
doi:10.3950/jibiinkoka.90.903 fatcat:joy4jkpvpzdolkq2z5lp47rfga

Assessment of cardiac anatomy using nuclear magnetic resonance imaging

Charles B. Higgins, Peter Lanzer, David Stark, Elias Botvinick, Nelson B. Schiller, Martin J. Lipton, Lawrence E. Crooks, Leon Kaufman
1985 Journal of the American College of Cardiology  
Imaging with nuclear magnetic resonance produces clear discrimination between flowing blood and the vascular wall because blood flowing in a laminar fashion at normal velocities produces a low intensity  ...  Early in vitro studies measuring re-Nuclear magnetic resonance imaging depicts organs and tissues in relation to the interaction of their compositional nuclei with a static magnetic field and fluctuating  ...  Imaging with nuclear magnetic resonance produces clear discrimination between flowing blood and the vascular wall because blood flowing in a laminar fashion at normal velocities produces a low intensity  ... 
doi:10.1016/s0735-1097(85)80147-9 pmid:3965536 fatcat:xc5srky7kbbcvogr7k3gcyfkn4

MR angiography using spin-lock flow tagging

Haim Azhari, Charles A. McKenzie, Robert R. Edelman
2001 Magnetic Resonance in Medicine  
Thus, contrast is obtained without an injection of a contrast material or image subtraction. Furthermore, the flow of the tagged bolus can be visualized.  ...  A rapid imaging stage, which yields a T 1 -weighted signal from the tagged spins, completes the sequence. Untagged spins are thoroughly dephased and consequently suppressed in the image.  ...  Consequently, in-plane and retrograde flow may be difficult to visualize with TOF (2) (when saturation bands are used).  ... 
doi:10.1002/mrm.1295 pmid:11675661 fatcat:xpxr33t47zah5gsf64im3an73m

Page 3337 of The Journal of Neuroscience Vol. 20, Issue 9 [page]

2000 The Journal of Neuroscience  
Haacke M, Lai S, Reichenbach J, Kuppusamy F, Hoogenraad F, Takeichi H, Lin W (1997) In vivo measurement of blood oxygen saturation using magnetic resonance imaging: a direct validation of the blood oxygen  ...  Magn Reson Imaging 13:549-553. Buxton RB, Frank LR (1997) A model for the coupling between cerebral blood flow and oxygen metabolism during neural stimulation. J Cereb Blood Flow Metab 17:64-72.  ... 

Four dimensional magnetic resonance velocimetry for complex flow in the jugular vein

Gabriel Acevedo-Bolton, Matthew R Amans, Sarah Kefayati, Van Halbach, David Saloner
2015 Quantitative Imaging in Medicine and Surgery  
Acknowledgements The authors would like to thank Farshid Faraji for his help in handling the raw data. Funding: This work was supported in part by the National Institutes of Health, NS059944 (DS).  ...  We used MR flow imaging in vivo and in vitro with a patient-specific flow model to study the flow patterns in the dominant right sigmoid sinus and jugular vein of a patient who presented with right-sided  ...  In recent years, magnetic resonance imaging (MRI) has able to determine the full velocity field in 3-dimensional (3D) space through the cardiac cycle.  ... 
doi:10.3978/j.issn.2223-4292.2015.04.09 pmid:26435930 pmcid:PMC4559987 fatcat:icqxzne4xvdsfjz7xade2ajopy

In Vivo Real-Time Intravascular MRI

Pedro A. Rivas, Krishna S. Nayak, Greig C. Scott, Michael V. McConnell, Adam B. Kerr, Dwight G. Nishimura, John M. Pauly, Bob S. Hu
2002 Journal of Cardiovascular Magnetic Resonance  
The imaging sequence was tested in a continuous flow phantom and then in vivo in the rabbit aorta using a 2 mm catheter coil. Results.  ...  The Magnetic resonance imaging (MRI) is an emerging technology for catheter-based imaging and interventions.  ...  Magnetic resonance imaging (MRI) is a highly flexible imaging technology, which can provide detailed structural imaging with high soft tissue contrast.  ... 
doi:10.1081/jcmr-120003948 pmid:12074137 fatcat:mbtecnblojbhtl6p5jmighgjl4

Time-resolved magnetic resonance angiography and flow-sensitive 4-dimensional magnetic resonance imaging at 3 Tesla for blood flow and wall shear stress analysis

Alex Frydrychowicz, Alexander Berger, Maximilan F. Russe, Aurélien F. Stalder, Andreas Harloff, Sven Dittrich, Jürgen Hennig, Mathias Langer, Michael Markl
2008 Journal of Thoracic and Cardiovascular Surgery  
magnetic resonance imaging in healthy volunteers and to illustrate its potential in comparison with results in a patient with stenosis.  ...  Materials and Methods: All examinations consisted of flow-sensitive 4-dimensional magnetic resonance imaging at 3 Tesla.  ...  magnetic resonance imaging in healthy volunteers and to illustrate its potential in comparison with results in a patient with stenosis.  ... 
doi:10.1016/j.jtcvs.2008.02.062 pmid:18692649 fatcat:cxicphbhpvepdbofrw2ytk7pgm

The Role of Imaging of Flow Patterns by 4D Flow MRI in Aortic Stenosis

Julio Garcia, Alex J. Barker, Michael Markl
2019 JACC Cardiovascular Imaging  
Recent advances in magnetic resonance imaging (MRI) allow for the comprehensive visualization and quantification of in vivo aortic flow pattern dynamics.  ...  This review introduces 4-dimensional flow MRI for blood flow visualization and quantification of hemodynamic metrics in the setting of aortic valve disease, with a focus on AS and associated secondary  ...  ; MRI ¼ magnetic resonance imaging.  ... 
doi:10.1016/j.jcmg.2018.10.034 pmid:30732721 fatcat:qyu7vgcf6nhgxmyogzho5q3vai

Dark-Blood Delayed Enhancement Cardiac Magnetic Resonance of Myocardial Infarction

Han W. Kim, Wolfgang G. Rehwald, Elizabeth R. Jenista, David C. Wendell, Peter Filev, Lowie van Assche, Christoph J. Jensen, Michele A. Parker, Enn-ling Chen, Anna Lisa C. Crowley, Igor Klem, Robert M. Judd (+1 others)
2017 JACC Cardiovascular Imaging  
Although delayed enhancement cardiac magnetic resonance (DE-CMR) is an in vivo reference standard for imaging MI, an important limitation is poor delineation between hyperenhanced myocardium and bright  ...  In infarcts that were identified by both techniques, the entire length of the endocardial border between infarcted myocardium and adjacent blood-pool was visualized in 33% for DE-CMR compared with 100%  ...  DE-CMR ¼ delayed enhancement cardiac magnetic resonance; FIDDLE ¼ flow-independent dark-blood delayed enhancement.  ... 
doi:10.1016/j.jcmg.2017.09.021 pmid:29248655 pmcid:PMC5993564 fatcat:qeexn4ytezdabnqivqnwoux6sm

Divergence-free reconstruction for accelerated 3D phase-contrast flow measurements

Julia Busch, Daniel Giese, Lukas Wissmann, Sebastian Kozerke
2012 Journal of Cardiovascular Magnetic Resonance  
Background Cine 3D phase-contrast magnetic resonance imaging (PC-MRI) has emerged as a valuable tool for assessing blood flow patterns [Markl, JCMR'11] .  ...  Divergence-free basis functions [Lowitzsch, Texas'02] were used in combination with normalized convolution in order to incorporate prior knowledge of blood incompressibility into MR image reconstruction  ... 
doi:10.1186/1532-429x-14-s1-w38 pmcid:PMC3305738 fatcat:4tdh6fn6incnlewt3rmgcag4bu
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