Výsledky vyhledávání - "Alyssa A. Torjesen"

Mediation Analysis of Aortic Stiffness and Renal Microvascular Function

Autor: Lesley A. Inker, Lenore J. Launer, Alyssa A. Torjesen, Gudny Eiriksdottir, Sigurdur Sigurdsson, Andrew S. Levey, Gary F. Mitchell, Todd Woodard, John D. Gotal, Vilmundur Gudnason, Thor Aspelund, Tamara B. Harris

Publikováno v: Journal of the American Society of Nephrology. 26:1181-1187

Aortic stiffening, assessed by carotid-femoral pulse wave velocity, is associated with CKD. Transmission of excessive flow pulsatility into the low-impedance renal microvasculature may mediate this association. However, direct analyses of macrovascul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32ebc327c072eb170591f18bad94bfb3
https://doi.org/10.1681/asn.2014050450

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Segmental Kidney Volumes Measured by Dynamic Contrast-Enhanced Magnetic Resonance Imaging and Their Association With CKD in Older People

Autor: Todd Woodard, Gudny Eiriksdottir, Sigurdur Sigurdsson, Lesley A. Inker, Tamara B. Harris, Vilmundur Gudnason, Thor Aspelund, Gary F. Mitchell, Lenore J. Launer, Alyssa A. Torjesen, Andrew S. Levey, John D. Gotal

Publikováno v: American Journal of Kidney Diseases. 65:41-48

Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) is a potentially powerful tool for analysis of kidney structure and function. The ability to measure functional and hypofunctional tissues could provide important information in groups at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::176b517df6d52d3d3f37476dd2d9b076
https://doi.org/10.1053/j.ajkd.2014.05.017

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Inter‐Relations of Orthostatic Blood Pressure Change, Aortic Stiffness, and Brain Structure and Function in Young Adults

Autor: Naomi M. Hamburg, Alyssa A. Torjesen, Charles DeCarli, Jayandra J. Himali, Gary F. Mitchell, Leroy L. Cooper, Connie W. Tsao, Matthew P. Pase, Ramachandran S. Vasan, Sudha Seshadri, Alexa S. Beiser

Publikováno v: Journal of the American Heart Association, vol 6, iss 8
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease

Background Relations of orthostatic change in blood pressure with brain structure and function have not been studied thoroughly, particularly in younger, healthier individuals. Elucidation of factors that contribute to early changes in brain integrit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a571e0ddf7e107c3c331e50598c24fc0
https://doi.org/10.1161/jaha.117.006206

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Ultrafast wavelength multiplexed broad bandwidth digital diffuse optical spectroscopy for in vivo extraction of tissue optical properties

Autor: Raeef Istfan, Alyssa A. Torjesen, Darren Roblyer

Publikováno v: Journal of biomedical optics. 22(3)

Frequency-domain diffuse optical spectroscopy (FD-DOS) utilizes intensity-modulated light to characterize optical scattering and absorption in thick tissue. Previous FD-DOS systems have been limited by large device footprints, complex electronics, hi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81c9322ca85d53a7d561bb031d3eb6dd
https://pubmed.ncbi.nlm.nih.gov/28280840

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Relations of Arterial Stiffness With Postural Change in Mean Arterial Pressure in Middle-Aged Adults: The Framingham Heart Study

Autor: Daniel Levy, Naomi M. Hamburg, Ramachandran S. Vasan, Jian Rong, Alyssa A. Torjesen, Martin G. Larson, Leroy L. Cooper, Gary F. Mitchell, Emelia J. Benjamin

Publikováno v: Hypertension (Dallas, Tex. : 1979). 69(4)

Impaired regulation of blood pressure on standing can lead to adverse outcomes, including falls, syncope, and disorientation. Mean arterial pressure (MAP) typically increases on standing; however, an insufficient increase or a decline in MAP on stand

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fda53b9f6ccdf17e513f6d0bb004aec7
https://pubmed.ncbi.nlm.nih.gov/28264924

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Cerebrovascular Damage Mediates Relations Between Aortic Stiffness and Memory

Autor: Lesley A. Inker, Vilmundur Gudnason, Tamara B. Harris, Mark A. van Buchem, Todd Woodard, Gary F. Mitchell, Alyssa A. Torjesen, Leroy L. Cooper, Lenore J. Launer, Sigurdur Sigurdsson, Thor Aspelund, Gudny Eiriksdottir

Publikováno v: Hypertension, 67(1), 176-182

Aortic stiffness is associated with cognitive decline. Here, we examined the association between carotid-femoral pulse wave velocity and cognitive function and investigated whether cerebrovascular remodeling and parenchymal small vessel disease damag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b341e20258205eacd866675e61e93d72
https://hdl.handle.net/1887/106506

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An Ultra-Fast Digital Diffuse Optical Spectroscopic Imaging (dDOSI) System for Monitoring Chemotherapy Response

Autor: Darren Roblyer, Hannah M. Peterson, Alyssa A. Torjesen, Raeef Istfan

Publikováno v: Biomedical Optics 2016.

We present a clinically-feasible digital platform for ultra-fast frequency-domain DOSI measurements of tissue chromophore concentrations, which will be used to monitor treatment response early during chemotherapy to guide treatment.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5f7d26f259598b148fda83a8baa23fb
https://doi.org/10.1364/ots.2016.oth3c.1

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Relations Between Aortic Stiffness and Left Ventricular Structure and Function in Older Participants in the Age, Gene/Environment Susceptibility-Reykjavik Study

Autor: Tamara B. Harris, Thor Aspelund, John D. Gotal, Vilmundur Gudnason, Vanessa Bell, Jos J.M. Westenberg, Alyssa A. Torjesen, Gary F. Mitchell, Lenore J. Launer, Sigurdur Sigurdsson, Albert de Roos

Publikováno v: Circulation: Cardiovascular Imaging, 8(4)
Circulation: Cardiovascular Imaging

Background— Left ventricular (LV) contraction displaces the aortic annulus and produces a force that stretches the ascending aorta. We hypothesized that aortic stiffening increases this previously ignored component of LV load and may contribute to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::534bea0e924f2d3353e6b0e9af7f58c6
https://doi.org/10.1161/circimaging.114.003039

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Longitudinal and Circumferential Strain of the Proximal Aorta

Autor: Sigurður Sigurðsson, Vilmundur Gudnason, Gary F. Mitchell, John D. Gotal, Vanessa Bell, Lenore J. Launer, Alyssa A. Torjesen, Tamara B. Harris, William A. Mitchell, Jos J.M. Westenberg, Thor Aspelund, Albert de Roos

Publikováno v: Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease

Background Accurate assessment of mechanical properties of the proximal aorta is a requisite first step for elucidating the pathophysiology of isolated systolic hypertension. During systole, substantial proximal aortic axial displacement produces lon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b26601297cf47e21234ef9df5a294f6f
http://europepmc.org/articles/PMC4338743

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PO-01 LONGITUDINAL AND CIRCUMFERENTIAL STRAIN OF THE PROXIMAL AORTA

Autor: Sigurður Sigurðsson, T.B. Harris, Vanessa Bell, W.A. Mitchell, Vilmundur Gudnason, A. de Roos, L. J. Launer, Gary F. Mitchell, Alyssa A. Torjesen, J.J.M. Westenberg, John D. Gotal, Thor Aspelund

Publikováno v: Artery Research, Vol 8, Iss 4 (2014)

Background-—Accurate assessment of mechanical properties of the proximal aorta is a requisite first step for elucidating the pathophysiology of isolated systolic hypertension. During systole, substantial proximal aortic axial displacement produces

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9961cbd5faec5a918485e514daaf3c7
https://www.atlantis-press.com/article/125929282/view

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