1. Fossilized Teeth as a New Robust and Reproducible Standard for Polarization-Sensitive Optical Coherence Tomography

    Fossilized Teeth as a New Robust and Reproducible Standard for Polarization-Sensitive Optical Coherence Tomography

    A clinical need exists for a cheap and efficient standard for polarization sensitive optical coherence tomography (PS-OCT). We utilize prehistoric fossilized teeth from the Megalodon shark and European horse as an unconventional, yet robust standard. Given their easy accessibility and the microstructural consistency conferred by the process of fossilization, they provide a means of calibration to reduce error from sources such as catheter bending and temperature changes. We tested the maximum difference in birefringence values in each tooth and found the fossilized teeth to be fast and repeatable. The results were compared to measurements from bovine meniscus, tendon, and destroyed ...

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    On 5/9/13 mebrezin said:
    After looking at many synthetic and some biological material for over a decade, we were surprised the Megalodon met our needs. It is robust, inexpensive, can be used rapidly (such as in between procedures) and its properties don't change. It just requires being fixed in a molding to maintain orientation and marks need to be placed to insure you are imaging the same sight each time.

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