scholarly journals Natively fat‐suppressed 5D whole‐heart MRI with a radial free‐running fast‐interrupted steady‐state (FISS) sequence at 1.5T and 3T

2019 ◽  
Vol 83 (1) ◽  
pp. 45-55 ◽  
Author(s):  
Jessica A.M. Bastiaansen ◽  
Davide Piccini ◽  
Lorenzo Di Sopra ◽  
Christopher W. Roy ◽  
John Heerfordt ◽  
...  
Keyword(s):  
Steady State ◽  
Free Running ◽  
Whole Heart

scholarly journals Free‐running 3D whole heart myocardial T 1 mapping with isotropic spatial resolution

2019 ◽  
Vol 82 (4) ◽  
pp. 1331-1342 ◽  
Author(s):  
Haikun Qi ◽  
Olivier Jaubert ◽  
Aurelien Bustin ◽  
Gastao Cruz ◽  
Huijun Chen ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Isotropic Spatial Resolution ◽  
Free Running ◽  
Whole Heart

Length-dependent activation in intact ferret hearts: study of steady-state Ca(2+)-stress-strain interrelations

1996 ◽  
Vol 270 (6) ◽  
pp. H1940-H1950 ◽  
Author(s):  
R. Stennett ◽  
K. Ogino ◽  
J. P. Morgan ◽  
D. Burkhoff
Keyword(s):  
Steady State ◽  
Heart Function ◽  
Hill Coefficient ◽  
Physical Factors ◽  
Stress Strain ◽  
Ventricular Structure ◽  
Intact Muscle ◽  
Rapid Stimulation ◽  
Whole Heart ◽  
State Stress

We examined the steady-state stress-strain relationships and the steady-state stress-intracellular calcium concentration ([Ca2+]i) relationship in intact ferret hearts and compared these to previously published analogous relationships in skinned and intact muscle. Langendorff-perfused ferret hearts were treated with ryanodine and tetanized by rapid stimulation to create steady-state conditions. [Ca2+]i was measured concurrently by macroinjected aequorin. Over a range of volumes corresponding to strains between 1.0 and 0.75, steady-state stress decreased by 33% when saturating levels of perfusate calcium were used, indicating the degree to which physical factors contribute to the Frank-Starling relationship. The steady-state stress-[Ca2+]i relationship was sigmoidal with a mean Hill coefficient (nH) of 4.91 +/- 0.29 at a strain of 1.0, and the [Ca2+]i required for half-maximal activation (K1/2) was 0.41 +/- 0.03 microM. K1/2 increased and nH decreased with decreasing strains. These results are similar to those observed in intact muscle but differ quantitatively from results obtained in isolated, skinned preparations. Based on these results, we suggest that whole heart function can be related to average sarcomere function without the need for complex models of ventricular structure.

Free-running simultaneous myocardial T1/T2 mapping and cine imaging with 3D whole-heart coverage and isotropic spatial resolution

2019 ◽  
Vol 63 ◽  
pp. 159-169 ◽  
Author(s):  
Haikun Qi ◽  
Aurelien Bustin ◽  
Gastao Cruz ◽  
Olivier Jaubert ◽  
Huijun Chen ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
T2 Mapping ◽  
Cine Imaging ◽  
Isotropic Spatial Resolution ◽  
Myocardial T1 ◽  
Free Running ◽  
Whole Heart

Steady-state mechanism for polymer ablation by a free-running Er:YAG laser

2006 ◽  
Vol 253 (5) ◽  
pp. 2386-2392 ◽  
Author(s):  
D.M. Bubb ◽  
A.O. Sezer ◽  
D. Harris ◽  
F. Rezae ◽  
S.P. Kelty
Keyword(s):  
Steady State ◽  
Er:Yag Laser ◽  
Polymer Ablation ◽  
Free Running

scholarly journals An automated approach to fully self‐gated free‐running cardiac and respiratory motion‐resolved 5D whole‐heart MRI

2019 ◽  
Vol 82 (6) ◽  
pp. 2118-2132 ◽  
Author(s):  
Lorenzo Di Sopra ◽  
Davide Piccini ◽  
Simone Coppo ◽  
Matthias Stuber ◽  
Jérôme Yerly
Keyword(s):  
Respiratory Motion ◽  
Free Running ◽  
Whole Heart

scholarly journals Similarity‐driven multi‐dimensional binning algorithm (SIMBA) for free‐running motion‐suppressed whole‐heart MRA

2021 ◽  
Author(s):  
John Heerfordt ◽  
Kevin K. Whitehead ◽  
Jessica A. M. Bastiaansen ◽  
Lorenzo Di Sopra ◽  
Christopher W. Roy ◽  
...  
Keyword(s):  
Free Running ◽  
Whole Heart
Sign in / Sign up

Export Citation Format

Share Document