scholarly journals Morphological and mechanical information of coronary arteries obtained with intravascular elastography. Feasibility study in vivo

2002 ◽  
Vol 23 (5) ◽  
pp. 405-413 ◽  
Author(s):  
C de Korte
Keyword(s):  
Feasibility Study ◽  
Coronary Arteries ◽  
Mechanical Information

Bradykinin-Induced Vasodilation Is Impaired at the Atherosclerotic Site but Is Preserved at the Spastic Site of Human Coronary Arteries In Vivo

Circulation ◽  
1995 ◽  
Vol 92 (2) ◽  
pp. 183-189 ◽  
Author(s):  
Takeshi Kuga ◽  
Kensuke Egashira ◽  
Masahiro Mohri ◽  
Hiroyuki Tsutsui ◽  
Yasuhiko Harasawa ◽  
...  
Keyword(s):  
Coronary Arteries

Visualization of brain microvasculature and blood flow in vivo: Feasibility study using confocal laser endomicroscopy

2021 ◽  
Author(s):  
Evgenii Belykh ◽  
Xiaochun Zhao ◽  
Brandon Ngo ◽  
Dara S. Farhadi ◽  
Adam Kindelin ◽  
...  
Keyword(s):  
Blood Flow ◽  
Feasibility Study ◽  
Confocal Laser Endomicroscopy ◽  
Confocal Laser ◽  
Brain Microvasculature

Flow recirculation zone length and shear rate are differentially affected by stenosis severity in human coronary arteries

2013 ◽  
Vol 304 (4) ◽  
pp. H559-H566 ◽  
Author(s):  
Ashkan Javadzadegan ◽  
Andy S. C. Yong ◽  
Michael Chang ◽  
Austin C. C. Ng ◽  
John Yiannikas ◽  
...  
Keyword(s):  
Shear Rate ◽  
Coronary Arteries ◽  
Recirculation Zone ◽  
Fluid Dynamic ◽  
Zone Length ◽  
Flow Recirculation ◽  
Stenosis Severity ◽  
Recirculation Zones ◽  
The Relationship

Flow recirculation zones and shear rate are associated with distinct pathogenic biological pathways relevant to thrombosis and atherogenesis. The interaction between stenosis severity and lesion eccentricity in determining the length of flow recirculation zones and peak shear rate in human coronary arteries in vivo is unclear. Computational fluid dynamic simulations were performed under resting and hyperemic conditions on computer-generated models and three-dimensional (3-D) reconstructions of coronary arteriograms of 25 patients. Boundary conditions for 3-D reconstructions simulations were obtained by direct measurements using a pressure-temperature sensor guidewire. In the computer-generated models, stenosis severity and lesion eccentricity were strongly associated with recirculation zone length and maximum shear rate. In the 3-D reconstructions, eccentricity increased recirculation zone length and shear rate when lesions of the same stenosis severity were compared. However, across the whole population of coronary lesions, eccentricity did not correlate with recirculation zone length or shear rate ( P = not signficant for both), whereas stenosis severity correlated strongly with both parameters ( r = 0.97, P < 0.001, and r = 0.96, P < 0.001, respectively). Nonlinear regression analyses demonstrated that the relationship between stenosis severity and peak shear was exponential, whereas the relationship between stenosis severity and recirculation zone length was sigmoidal, with an apparent threshold effect, demonstrating a steep increase in recirculation zone length between 40% and 60% diameter stenosis. Increasing stenosis severity and lesion eccentricity can both increase flow recirculation and shear rate in human coronary arteries. Flow recirculation is much more sensitive to mild changes in the severity of intermediate stenoses than is peak shear.

Interphalangeal Joint Cartilage: High-Spatial-Resolution in Vivo MR T2 Mapping—A Feasibility Study

Radiology ◽  
2004 ◽  
Vol 233 (1) ◽  
pp. 292-296 ◽  
Author(s):  
Jelena Lazovic-Stojkovic ◽  
Timothy J. Mosher ◽  
Harvey E. Smith ◽  
Qing X. Yang ◽  
Bernard J. Dardzinski ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
T2 Mapping ◽  
Interphalangeal Joint ◽  
Joint Cartilage

Feasibility study of in vivo MRI based dosimetric verification of proton end-of-range for liver cancer patients

2013 ◽  
Vol 106 (3) ◽  
pp. 378-382 ◽  
Author(s):  
Yading Yuan ◽  
Ovidiu C. Andronesi ◽  
Thomas R. Bortfeld ◽  
Christian Richter ◽  
Russell Wolf ◽  
...  
Keyword(s):  
Liver Cancer ◽  
Cancer Patients ◽  
Feasibility Study ◽  
Dosimetric Verification
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