Published in:
01-04-2009 | Advances in Nonnuclear Imaging Technologies
Applications of optical coherence tomography in cardiovascular medicine, part 1
Authors:
Joseph W. Villard, MD, MSE, Kiran K. Cheruku, MD, Marc D. Feldman, MD
Published in:
Journal of Nuclear Cardiology
|
Issue 2/2009
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Excerpt
Optical coherence tomography (OCT) is a recently developed optical analogue of ultrasound that measures the intensity of back reflected light rather than echoes of sound and translates these optical reflections into a high-resolution, two-dimensional tomographic image.
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3 Though OCT has many similarities to ultrasound, its use of light gives it some fundamental advantages. Because light has a much smaller wavelength than sound waves, the resolution of intravascular OCT is one to two orders of magnitude greater than IVUS.
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4 Also, the faster speed of light allows for a faster frame rate than ultrasound. Additionally, because OCT does not require a transducer, the catheter required for intravascular OCT imaging can be much smaller than that used for IVUS.
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