• Background: In vivo, non-invasive optical coherence tomography permits high-resolution imaging of tissue surfaces and subsurfaces, with the potential capability for detection and mapping of epithelial pathologies. Purpose: To evaluate the clinical capability of non-invasive in vivo OCT for diagnosing oral dysplasia and malignancy. Experimental Design: In 50 patients with oral lesions, conventional clinical examination was followed by OCT imaging, then standard biopsy and histopathology. Two blin…Read more
  • Purpose: To assess noninvasive optical coherence tomography and optical Doppler tomography for early detection and evaluation of chemotherapy-induced oral mucositis. Experimental Design: Cheek pouches of 10 Syrian golden hamsters were imaged using OCT/ODT during development of chemotherapy-induced mucositis. I.p. injections of 5-fluorouracil and mechanical irritation induced oral lesions. At 2, 4, 7, and 11 days, one hamster was sacrificed and processed for histopathology. OCT images were visual…Read more
  •  1
    Noninvasive imaging of oral premalignancy and malignancy
    with P. Wilder-Smith, T. Krasieva, W. G. Jung, Z. Chen, K. Osann, and B. Tromberg
    Early detection of cancer and its precursors remains the best way to ensure patient survival and quality of life. Our specific aim is to test a multimodality approach to noninvasive diagnostics of oral premalignancy and malignancy. In the hamster cheek pouch model, in vivo optical coherence tomography and optical Doppler tomography map epithelial, subepithelial, and vascular change throughout carcinogenesis. In vivo multiwavelength multiphoton and second-harmonic generated fluorescence technique…Read more
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    Actual causation: a stone soup essay
    with Clark Glymour David Danks, Bruce Glymour Frederick Eberhardt, Joseph Ramsey Richard Scheines, and Peter Spirtes Choh Man Teng
    Synthese 175 (2): 169--192. 2010.
    We argue that current discussions of criteria for actual causation are ill-posed in several respects. (1) The methodology of current discussions is by induction from intuitions about an infinitesimal fraction of the possible examples and counterexamples; (2) cases with larger numbers of causes generate novel puzzles; (3) “neuron” and causal Bayes net diagrams are, as deployed in discussions of actual causation, almost always ambiguous; (4) actual causation is (intuitively) relative to an initial…Read more
  •  5
    Internal strain formed in oxide ceramics upon spark-plasma sintering
    with T. Höche, Z. Shen, M. Nygren, P. A. Van Aken, F. Heyroth, and R. Uecker
    Philosophical Magazine 87 (29): 4555-4566. 2007.