High-resolution phase-contrast MRI of aortic and pulmonary blood flow during rest and physical exercise using a MRI compatible bicycle ergometer

2011 ◽  
Vol 80 (1) ◽  
pp. 103-108 ◽  
Author(s):  
Tim Frederik Weber ◽  
Hendrik von Tengg-Kobligk ◽  
Annette Kopp-Schneider ◽  
Julia Ley-Zaporozhan ◽  
Hans-Ulrich Kauczor ◽  
...  
Keyword(s):  
Blood Flow ◽  
High Resolution ◽  
Physical Exercise ◽  
Pulmonary Blood Flow ◽  
Phase Contrast ◽  
Bicycle Ergometer ◽  
Phase Contrast Mri

scholarly journals Quantification of Hepatic Blood Flow Using a High-Resolution Phase-Contrast MRI Sequence With Compressed Sensing Acceleration

2015 ◽  
Vol 204 (3) ◽  
pp. 510-518 ◽  
Author(s):  
Hadrien A. Dyvorne ◽  
Ashley Knight-Greenfield ◽  
Cecilia Besa ◽  
Nancy Cooper ◽  
Julio Garcia-Flores ◽  
...  
Keyword(s):  
Blood Flow ◽  
High Resolution ◽  
Compressed Sensing ◽  
Hepatic Blood Flow ◽  
Phase Contrast ◽  
Phase Contrast Mri

scholarly journals Assessment of fluctuating velocities in disturbed cardiovascular blood flow: In vivo feasibility of generalized phase-contrast MRI

2008 ◽  
Vol 28 (3) ◽  
pp. 655-663 ◽  
Author(s):  
Petter Dyverfeldt ◽  
John-Peder Escobar Kvitting ◽  
Andreas Sigfridsson ◽  
Jan Engvall ◽  
Ann F. Bolger ◽  
...  
Keyword(s):  
Blood Flow ◽  
Phase Contrast ◽  
Phase Contrast Mri ◽  
Cardiovascular Blood Flow

scholarly journals Automatic and Reproducible Positioning of Phase-Contrast MRI for the Quantification of Global Cerebral Blood Flow

PLoS ONE ◽  
2014 ◽  
Vol 9 (5) ◽  
pp. e95721 ◽  
Author(s):  
Peiying Liu ◽  
Hanzhang Lu ◽  
Francesca M. Filbey ◽  
Amy E. Pinkham ◽  
Carrie J. McAdams ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Phase Contrast ◽  
Phase Contrast Mri ◽  
Global Cerebral Blood Flow

scholarly journals Effects of short-term exposure to head-down tilt on cerebral hemodynamics: a prospective evaluation of a spaceflight analog using phase-contrast MRI

2016 ◽  
Vol 120 (12) ◽  
pp. 1466-1473 ◽  
Author(s):  
Karina Marshall-Goebel ◽  
Khalid Ambarki ◽  
Anders Eklund ◽  
Jan Malm ◽  
Edwin Mulder ◽  
...  
Keyword(s):  
Blood Flow ◽  
Phase Contrast ◽  
Cerebral Hemodynamics ◽  
Arterial Blood Flow ◽  
Ambient Atmosphere ◽  
Phase Contrast Mri ◽  
Jugular Veins ◽  
Cross Sectional ◽  
Arterial Blood ◽  
Short Term Exposure

Alterations in cerebral hemodynamics in microgravity are hypothesized to occur during spaceflight and could be linked to the Visual Impairment and Intracranial Pressure syndrome. Head-down tilt (HDT) is frequently used as a ground-based analog to simulate cephalad fluid shifts in microgravity; however, its effects on cerebral hemodynamics have not been well studied with MRI techniques. Here, we evaluate the effects of 1) various HDT angles on cerebral arterial and venous hemodynamics; and 2) exposure to 1% CO2 during an intermediate HDT angle (−12°) as an additional space-related environmental factor. Blood flow, cross-sectional area (CSA), and blood flow velocity were measured with phase-contrast MRI in the internal jugular veins, as well as the vertebral and internal carotid arteries. Nine healthy male subjects were measured at baseline (supine, 0°) and after 4.5 h of HDT at −6°, −12° (with and without 1% CO2), and −18°. We found a decrease in total arterial blood flow from baseline during all angles of HDT. On the venous side, CSA increased with HDT, and outflow decreased during −12° HDT ( P = 0.039). Moreover, the addition of 1% CO2 to −12° HDT caused an increase in total arterial blood flow ( P = 0.016) and jugular venous outflow ( P < 0.001) compared with −12° HDT with ambient atmosphere. Overall, the results indicate decreased cerebral blood flow during HDT, which may have implications for microgravity-induced cerebral hemodynamic changes.

Blood flow quantification from 2D phase contrast MRI in renal arteries using an unsupervised data driven approach

2009 ◽  
Vol 19 (2) ◽  
pp. 98-107 ◽  
Author(s):  
Frank Gerrit Zöllner ◽  
Jan Ankar Monssen ◽  
Jarle Rørvik ◽  
Arvid Lundervold ◽  
Lothar R. Schad
Keyword(s):  
Blood Flow ◽  
Phase Contrast ◽  
Renal Arteries ◽  
Flow Quantification ◽  
Data Driven ◽  
Phase Contrast Mri ◽  
Blood Flow Quantification ◽  
Data Driven Approach

scholarly journals Assessing arterial blood flow and vessel area variations using real-time zonal phase-contrast MRI

2006 ◽  
Vol 23 (3) ◽  
pp. 422-429 ◽  
Author(s):  
Markus Oelhafen ◽  
Juerg Schwitter ◽  
Sebastian Kozerke ◽  
Roger Luechinger ◽  
Peter Boesiger
Keyword(s):  
Blood Flow ◽  
Real Time ◽  
Phase Contrast ◽  
Arterial Blood Flow ◽  
Phase Contrast Mri ◽  
Vessel Area ◽  
Arterial Blood

Phase contrast MRI assessment of pedal blood flow

1995 ◽  
Vol 5 (1) ◽  
Author(s):  
J.F. Debatin ◽  
R. Dalman ◽  
R.J. Herfkens ◽  
E.J. Harris ◽  
N.J. Pelc
Keyword(s):  
Blood Flow ◽  
Phase Contrast ◽  
Phase Contrast Mri
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