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Description |
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This is a movie loop of the effect of cyanide on the NADH signal. It shows the changes in the NADH signal from the longitudinal bands of mitochondria.
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This is a 3D Hall Effect image of a porcine aorta section containing a renal branch. This image was collected using a 3D tomographic scanner and data processing software developed in the Laboratory of Cardiac Energetics, NHLBI. For details, see publications.
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“Three-dimensional motion tracking of the left ventricle of the human heart during contraction. The downward movement of the base of the heart toward the apex and the twisting motion of the apex are clearly visible.”
View higher resolution of this
image. (.jpg image, 126KB) |
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We use DENSE, an MRI technique, to track tissue motion within the myocardium at 1 mm resolution and 100 frames/sec in this transverse slice.
View MPEG movie.
(.mpeg movie, 586 KB) |
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We use DENSE, an MRI technique, to track tissue motion within the myocardium at 1 mm resolution and 100 frames/sec in this transverse slice.
View MPEG
movie. (.mpeg movie, 586 KB) |
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This movie is a recording
of the real-time MRI displayed within the scan room for
the surgeon during the deployment of the prosthetic valve.
The implantation has a number of phases: (a) A guidewire
is advanced through the trocar across the native aortic
valve. (b) The prosthetic valve is advanced to the end
of the trocar. (c) the prosthetic valve is advanced into
position in the left ventricular outflow track. (d) the
prosthetic valve is inserted across the native valve
and aligned with the coronary ostia and the aortic annulus
(e) a balloon filled with dilute Gd-DTPA MR contrast
agent is used to expand the prosthetic valve (f) interactive
saturation is used to enchance visualization of the extent
of balloon inflation (g) the balloon is taken down and
pulled back through the trocar (h) the guidewire is removed
(i) the delivery device is removed from the
trochar. The total time between the emergence of the
prosthetic valve from the sheath to the extraction of
the balloon is 77 seconds.
View flash movie.
You may download
MPEG(4.48MB) or QuickTime
movie(3.85MB) from this link. |
