1. Acoustic Radiation Force Optical Coherence Elastography : Localized Vs. Wide-Area Perturbation – A Comparison (Thesis)

    Acoustic Radiation Force Optical Coherence Elastography : Localized Vs. Wide-Area Perturbation – A Comparison (Thesis)

    Elastography is a method to image the biomechanical properties of tissues. The experimental setup has a 10 MHz ultrasound transducer (focal length of 5cm and a spot size of 0.3mm localized excitation and unfocused for wide-area excitation) which generates acoustic radiation force (ARF) to perturb the sample and the corresponding mechanical response is imaged with a spectral domain optical coherence tomography (SD-OCT) with a center wavelength of 800 nm and a bandwidth of 180 nm at a transverse optical resolution of 8[mu]m. The existing hypothesis which states that localized harmonic excitation in audio frequency regime has potential ...

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