1. Articles from Michael Choma

    1-6 of 6
    1. Post-doctoral Research Fellowship at Yale in Cardiovascular Molecular and Translational Imaging

      Post-doctoral Research Fellowship at Yale in Cardiovascular Molecular and Translational Imaging

      Post-doctoral research fellowship immediately available at Yale on NIH funded T32 training grant focused on providing multi-disciplinary multi-modality training in molecular and translational cardiovascular imaging for highly qualified fellows holding either a MD or/and PhD, in preparation for academic careers as independent investigators in the highly clinically relevant field of cardiovascular imaging. Post-doctoral fellowship training will be 2-3 years in duration. There are three primary research focuses in the post-doctoral training, 1) cardiovascular molecular imaging, 2) cardiovascular imaging technologies and analyses, and 3) translational cardiovascular imaging. Applicants will have full access to resources available through the Yale Translational Research ...

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    2. Systems And Methods For Imaging Using A Random Laser

      Systems And Methods For Imaging Using A Random Laser

      Systems and methods are provided for imaging using complex lasers. In general, a complex laser may be used as an electromagnetic source for an imaging application. The use of a lower spatial coherence configured complex laser in imaging applications may advantageously mitigate coherent artifacts in imaging such as cross-talk and speckle and improve overall image quality. Imaging applications where a complex laser may be useful include both incoherent imaging applications, such as digital light projectors and traditional microscopy, and coherent imaging applications, such as optical coherence tomography (OCT) and holography. The systems and methods provided also enable controlling the degree ...

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      Mentions: Yale University
    3. Methods, systems and computer program products for characterizing structures based on interferometric phase data

      Methods, systems and computer program products for characterizing structures based on interferometric phase data
      Structure profiles from optical interferometric data can be identified by obtaining a plurality of broadband interferometric optical profiles of a structure as a function of structure depth in an axial direction. Each of the plurality of interferometric optical profiles include a reference signal propagated through a reference path and a sample signal reflected from a sample reflector in the axial direction. An axial position corresponding to at least a portion of the structure is selected. Phase variations of the plurality of interferometric optical profiles are determined at the selected axial position. A physical displacement of the structure is identified based ...
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    4. Methods and systems for reducing complex conjugate ambiguity in interferometric data

      A complex conjugate ambiguity can be resolved in an Optical Coherence Tomography (OCT) interferogram. A reference light signal is propagated along a reference path. A sample light signal is impinged on a sample reflector. The reference light signal is frequency shifted with respect to the sample light signal to thereby separate a positive and a negative displacement of a complex conjugate component of the OCT interferogram.
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      Mentions: Duke University
    5. System and method for low coherence broadband quadrature interferometry

      A quadrature broadband interferometry system and method obtains a complete complex interferometric signal instantaneously in both homodyne and heterodyne systems in a simple, compact, and inexpensive setup. This is accomplished by separating interferometric components from non-interferometric components in each of at least two detector signals of an interferometer having a number of N.times.N couplers, scaling the interferometric components, and generating real and imaginary parts of a complex interferometric signal from the scaled interferometric components. The detector signals preferably derive from a broadband light source coupled to the interferometer, and the number of N.times.N couplers may be ...
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      Mentions: Duke University
    1-6 of 6
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    1. (3 articles) Duke University
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