Julian J. Armstrong

1. Mentioned In 18 Articles

2. Method and apparatus for measurement of optical properties in tissue

   Explore Article uspto.gov (Aug 31 2010) Patents , Probes

   A method of analyzing tissue includes inserting a radiation source into tissue, impinging radiation upon the tissue, obtaining a sample signal of the radiation that impinges upon the tissue, and determining a refractive index of the tissue from the sample signal. The method may also include determining at least one other optical property of the tissue. The method may provide for identifying tissue as part of a biopsy method. A ... (Read Full Article)
   

   Comment on Article Mentions:   Stephen A. Boppart   Julian J. Armstrong   David D. Sampson

3. Distribution of airway narrowing responses across generations and at branching points, assessed in vitro by anatomical optical coherence tomography

   Explore Article Respiratory Research (Jan 23 2010) Pulmonology

   Background Previous histological and imaging studies have shown the presence of variability in the degree of bronchoconstriction of airways sampled at different locations in the lung (i.e., heterogeneity). Heterogeneity can occur at different airway generations and at branching points in the bronchial tree. Whilst heterogeneity has been detected by previous experimental approaches its spatial relationship either within or between airways is unknown. Methods In this study, distribution of airway narrowing ... (Read Full Article)
   

   Comment on Article Mentions:   Julian J. Armstrong   David D. Sampson   University of Western Australia

4. Airway Narrowing Assessed by Anatomical Optical Coherence Tomography In Vitro: Dynamic Airway Wall Morphology and Function

   Explore Article Journal of Applied Physiology (Nov 13 2009) Pulmonology

   Regulation of airway caliber by lung volume or bronchoconstrictor stimulation is dependent on physiological, structural and mechanical events within the airway wall, including airway smooth muscle (ASM) contraction, deformation of the mucosa and cartilage, and tensioning of elastic matrices linking wall components. Despite close association between events in the airway wall and the resulting airway caliber these have typically been studied separately: the former primarily using histological approaches, the latter ... (Read Full Article)
   

   Comment on Article Mentions:   Julian J. Armstrong   David D. Sampson   University of Western Australia

5. Measuring airway dimensions during bronchoscopy using anatomical optical coherence tomography

   Explore Article European Respiratory Journal (Jun 21 2009) Otolaryngology

   ...nchoscopy using anatomical optical coherence tomography J.P. Williamson ^1^*, W.J. Noffsinger ^2, J.J. Armstrong ^3, H.W. Mitchell ^4, R.A. McLaughlin ^3, M.J. Phillips ^5, P.B. Noble ^6, D.D. Sampson ^3, A.R. We... (Read Full Article)
   

   Comment on Article Mentions:   Julian J. Armstrong   David D. Sampson   University of Western Australia

6. A Method Of Providing Quantitative Information About The Lower Airways Of A Lung (Wo 2009/059368)

   Explore Article wipo.int (May 14 2009) Pulmonology , Patents

   The present disclosure provides a method of providing quantitative information about a property of the lower airways of a lung using optical coherence tomography. The method comprises inserting a probe head of an anatomical optical coherence tomography device into the lower airways. Further, the method comprises directing light to, and receiving reflected light from, an internal wall portion of the lower airways. The light is suitable for optical coherence tomography. ... (Read Full Article)
   

   Comment on Article Mentions:   University of Western Australia   Julian J. Armstrong   David D. Sampson

7. Audio frequency in vivo optical coherence elastography

   Explore Article Institute of Physics (May 5 2009)

   Abstract. We present a new approach to optical coherence elastography (OCE), which probes the local elastic properties of tissue by using optical coherence tomography to measure the effect of an applied stimulus in the audio frequency range. We describe the approach, based on analysis of the Bessel frequency spectrum of the interferometric signal detected from scatterers undergoing periodic motion in response to an applied stimulus. We present quantitative results of ... (Read Full Article)
   

   Comment on Article Mentions:   University of Illinois at Urbana-Champaign   University of Western Australia   Julian J. Armstrong

8. Respiratory gating of anatomical optical coherence tomography images of the human airway

   Explore Article opticsinfobase.org (Apr 6 2009) Pulmonology

   ...ting of anatomical optical coherence tomography images of the human airway Robert A. McLaughlin, Julian J. Armstrong, Sven Becker, Jennifer H. Walsh, Arpit Jain, David R. Hillman, Peter R. Eastwood, and David D. Samp... (Read Full Article)
   

   Comment on Article Mentions:   David R. Hillman   University of Maryland   Julian J. Armstrong

9. Regional Airway Compliance in Asthma Measured Using Anatomical Optical Coherence Tomography

   Explore Article ajrccm.atsjournals.org (Mar 25 2009) Pulmonology

   No Abstract Provided (Read Full Article)
   

   Comment on Article Mentions:   Julian J. Armstrong   David D. Sampson   University of Western Australia

10. Using Optical Coherence Tomography To Improve Diagnostic and Therapeutic Bronchoscopy

    Explore Article CHEST (Feb 20 2009) Pulmonology

    ...than.Williamson{at}health.wa.gov.au), 2. Robert A. McLaughlin, PhD, 3. Martin J. Phillips, MBBS, 4. Julian J. Armstrong, PhD, 5. Sven Becker, MSc, 6. Jennifer H. Walsh, PhD, 7. David D. Sampson, PhD, 8. David R. Hillman... (Read Full Article)
    

    Comment on Article Mentions:   Julian J. Armstrong   Robert A. McLaughlin   Martin J. Phillips

11. OSA's Interactive Science Publishing Initiative Launches with Research on Breathing Disorders and Congenital Heart Defects

    Explore Article Newswise (Oct 31 2008)

    ...alia and The Raine Medical Research Foundation. R. A. McLaughlin, J. P. Williamson, M. J. Phillips, J. J. Armstrong, S. Becker, D. R. Hillman, P. R. Eastwood, and D. D. Sampson, "Applying anatomical optical coherenc... (Read Full Article)
    

    Comment on Article Mentions:   Duke University   University of Western Australia   Florence G. Rothenberg

12. Effect of Body Posture on Pharyngeal Shape and Size in Adults With and Without Obstructive Sleep Apnea

    Explore Article SLEEP (Oct 30 2008) Gastroenterology , Otolaryngology , Pulmonology

    .... Walsh, PhD1; Matthew S. Leigh, BTech2; Alexandre Paduch, MSc2; Kathleen J. Maddison, BSc (Hons)1; Julian J. Armstrong, PhD2; David D. Sampson, PhD2; David R. Hillman, MD1; Peter R. Eastwood, PhD1,3 1West Australian Sl... (Read Full Article)
    

    Comment on Article Mentions:   David D. Sampson   University of Western Australia   Sir Charles Gairdner Hospital

13. Applying anatomical optical coherence tomography to quantitative 3D imaging of the lower airway

    Explore Article opticsinfobase.org (Oct 15 2008) Gastroenterology , Pulmonology

    ...3D imaging of the lower airway Robert A. McLaughlin, Jonathan P. Williamson, Martin J. Phillips, Julian J. Armstrong, Sven Becker, David R. Hillman, Peter R. Eastwood, and David D. Sampson Optics Express, Vol. 16, Is......hnology : Optical coherence tomography Citation R. A. McLaughlin, J. P. Williamson, M. J. Phillips, J. J. Armstrong, S. Becker, D. R. Hillman, P. R. Eastwood, and D. D. Sampson, "Applying anatomical optical coher... (Read Full Article)
    

    Comment on Article Mentions:   David R. Hillman   Martin J. Phillips   David D. Sampson

14. Respiratory gating of endoscopic OCT images of the upper airway

    Explore Article SPIE Digital Library (May 16 2008) Gastroenterology , Otolaryngology , Pulmonology

    Robert A. McLaughlin, Julian J. Armstrong, Sven Becker et al. Anatomical optical coherence tomography (aOCT) is an endoscopic imaging modali... (Read Full Article)
    

    Comment on Article Mentions:   David D. Sampson   University of Western Australia   Peter R. Eastwood

15. Evaluation of pharyngeal shape and size using anatomical optical coherence tomography in individuals with and without obstructive sleep apnoea

    Explore Article Blackwell Synergy (May 13 2008) Gastroenterology , Otolaryngology

    Journal of Sleep Research, Volume 17, Issue 2, Page 230-238, June 2008. SummaryThis study compared shape, size and length of the pharyngeal airway in individuals with and without obstructive sleep apnoea (OSA) using a novel endoscopic imaging technique, anatomical optical coherence tomography (aOCT). The study population ... (Read Full Article)
    

    Comment on Article Mentions:   Sir Charles Gairdner Hospital   David R. Hillman   David D. Sampson

16. Anatomical Optical Coherence Tomography for Long-Term, Portable, Quantitative Endoscopy

    Explore Article IEEE Xplore (Apr 9 2008) Gastroenterology , Otolaryngology , Pulmonology

    n this paper, we report on anatomical optical coherence tomography, a catheter-based optical modality designed to provide quantitative sectional images of internal hollow organ anatomy over extended observational periods. We consider the design and performance of an instrument and its initial intended application in the human upper airway for the characterization of obstructive sleep apnea (OSA). Compared with current modalities, the technique uniquely combines quantitative imaging, bedside operation, and safety ... (Read Full Article)
    

    Comment on Article Mentions:   David D. Sampson   University of Western Australia   Peter R. Eastwood

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