scholarly journals Imaging Pulmonary Blood Flow Using Pseudocontinuous Arterial Spin Labeling ( PCASL ) With Balanced Steady‐State Free‐Precession ( bSSFP ) Readout at 1.5T

2020 ◽  
Vol 52 (6) ◽  
pp. 1767-1782
Author(s):  
Ferdinand Seith ◽  
Rolf Pohmann ◽  
Martin Schwartz ◽  
Thomas Küstner ◽  
Ahmed E. Othman ◽  
...  
Keyword(s):  
Blood Flow ◽  
Steady State ◽  
Arterial Spin Labeling ◽  
Pulmonary Blood Flow ◽  
Steady State Free Precession ◽  
Spin Labeling ◽  
Free Precession

scholarly journals Optimization of 4D vessel‐selective arterial spin labeling angiography using balanced steady‐state free precession and vessel‐encoding

2016 ◽  
Vol 29 (6) ◽  
pp. 776-786 ◽  
Author(s):  
Thomas W. Okell ◽  
Peter Schmitt ◽  
Xiaoming Bi ◽  
Michael A. Chappell ◽  
Rob H. N. Tijssen ◽  
...  
Keyword(s):  
Steady State ◽  
Arterial Spin Labeling ◽  
Steady State Free Precession ◽  
Spin Labeling ◽  
Free Precession

scholarly journals Arterial spin labeling-fast imaging with steady-state free precession (ASL-FISP): a rapid and quantitative perfusion technique for high-field MRI

2014 ◽  
Vol 27 (8) ◽  
pp. 996-1004 ◽  
Author(s):  
Ying Gao ◽  
Candida L. Goodnough ◽  
Bernadette O. Erokwu ◽  
George W. Farr ◽  
Rebecca Darrah ◽  
...  
Keyword(s):  
Steady State ◽  
Arterial Spin Labeling ◽  
High Field ◽  
Steady State Free Precession ◽  
Spin Labeling ◽  
Fast Imaging ◽  
Free Precession ◽  
Perfusion Technique ◽  
High Field Mri ◽  
Quantitative Perfusion

Whole-brain perfusion imaging with balanced steady-state free precession arterial spin labeling

2015 ◽  
Vol 29 (3) ◽  
pp. 264-274 ◽  
Author(s):  
Paul Kyu Han ◽  
Jong Chul Ye ◽  
Eung Yeop Kim ◽  
Seung Hong Choi ◽  
Sung-Hong Park
Keyword(s):  
Steady State ◽  
Perfusion Imaging ◽  
Arterial Spin Labeling ◽  
Steady State Free Precession ◽  
Brain Perfusion ◽  
Spin Labeling ◽  
Free Precession ◽  
Whole Brain ◽  
Brain Perfusion Imaging

scholarly journals The heterogeneity of regional specific ventilation is unchanged following heavy exercise in athletes

2013 ◽  
Vol 115 (1) ◽  
pp. 126-135 ◽  
Author(s):  
Vince Tedjasaputra ◽  
Rui Carlos Sá ◽  
Tatsuya J. Arai ◽  
Sebastiaan Holverda ◽  
Rebecca J. Theilmann ◽  
...  
Keyword(s):  
Blood Flow ◽  
Gas Exchange ◽  
Arterial Spin Labeling ◽  
Pulmonary Blood Flow ◽  
Ventilatory Threshold ◽  
Spin Labeling ◽  
Relative Dispersion ◽  
Arterial Oxygen ◽  
Heavy Exercise ◽  
Significant Change

Heavy exercise increases ventilation-perfusion mismatch and decreases pulmonary gas exchange efficiency. Previous work using magnetic resonance imaging (MRI) arterial spin labeling in athletes has shown that, after 45 min of heavy exercise, the spatial heterogeneity of pulmonary blood flow was increased in recovery. We hypothesized that the heterogeneity of regional specific ventilation (SV, the local tidal volume over functional residual capacity ratio) would also be increased following sustained exercise, consistent with the previously documented changes in blood flow heterogeneity. Trained subjects ( n = 6, maximal O2consumption = 61 ± 7 ml·kg−1·min−1) cycled 45 min at their individually determined ventilatory threshold. Oxygen-enhanced MRI was used to quantify SV in a sagittal slice of the right lung in supine posture pre- (preexercise) and 15- and 60-min postexercise. Arterial spin labeling was used to measure pulmonary blood flow in the same slice bracketing the SV measures. Heterogeneity of SV and blood flow were quantified by relative dispersion (RD = SD/mean). The alveolar-arterial oxygen difference was increased during exercise, 23.3 ± 5.3 Torr, compared with rest, 6.3 ± 3.7 Torr, indicating a gas exchange impairment during exercise. No significant change in RD of SV was seen after exercise: preexercise 0.78 ± 0.15, 15 min postexercise 0.81 ± 0.13, 60 min postexercise 0.78 ± 0.08 ( P = 0.5). The RD of blood flow increased significantly postexercise: preexercise 1.00 ± 0.12, 15 min postexercise 1.15 ± 0.10, 45 min postexercise 1.10 ± 0.10, 60 min postexercise 1.19 ± 0.11, 90 min postexercise 1.11 ± 0.12 ( P < 0.005). The lack of a significant change in RD of SV postexercise, despite an increase in the RD of blood flow, suggests that airways may be less susceptible to the effects of exercise than blood vessels.

scholarly journals Characterizing pulmonary blood flow distribution measured using arterial spin labeling

2009 ◽  
Vol 22 (10) ◽  
pp. 1025-1035 ◽  
Author(s):  
A. Cortney Henderson ◽  
G. Kim Prisk ◽  
David L. Levin ◽  
Susan R. Hopkins ◽  
Richard B. Buxton
Keyword(s):  
Blood Flow ◽  
Arterial Spin Labeling ◽  
Pulmonary Blood Flow ◽  
Flow Distribution ◽  
Spin Labeling ◽  
Blood Flow Distribution
Sign in / Sign up

Export Citation Format

Share Document