Wide-field mapping of upper airway cilia dynamics using spectrally encoded interferometric microscopy

2021 ◽  
Author(s):  
Zhikai Zhu ◽  
Jason J. Chen ◽  
Yusi Miao ◽  
David Mukai ◽  
George Philipopoulos ◽  
...  
Keyword(s):  
Upper Airway ◽  
Wide Field ◽  
Field Mapping ◽  
Airway Cilia ◽  
Spectrally Encoded

scholarly journals EVN-Merlin Observations of the Remarkable Lens System: 2016+112

1996 ◽  
Vol 173 ◽  
pp. 339-340
Author(s):  
M.A. Garrett ◽  
S. Nair ◽  
D. Walsh ◽  
R.W. Porcas ◽  
A.R. Patnaik
Keyword(s):  
Field Of View ◽  
Wide Field ◽  
Common Elements ◽  
Lens System ◽  
Field Mapping ◽  
Mapping Techniques

2016+112 was observed simultaneously with the European VLBI Network (EVN) and MERLIN arrays during the May 1993 joint EVN-MERLIN session at λ18 cm. Common elements to both arrays included the Jodrell Bank 76-m Lovell and 32-m Cambridge telescopes. In order to simultaneously map the entire 4 arcsec2 field of view, various wide-field mapping techniques were employed (see Garrett et al. 1994b).

scholarly journals High‐Resolution, Wide‐Field, Forward‐Viewing Spectrally Encoded Endoscope

2019 ◽  
Vol 51 (9) ◽  
pp. 808-814
Author(s):  
Adel Zeidan ◽  
Dukho Do ◽  
Dongkyun Kang ◽  
Mitsuhiro Ikuta ◽  
Jiheun Ryu ◽  
...  
Keyword(s):  
High Resolution ◽  
Wide Field ◽  
Spectrally Encoded

Wide field mapping of first-order optical inhomogeneities

2004 ◽  
Vol 6 (6) ◽  
pp. 597-603 ◽  
Author(s):  
C Razzetti ◽  
A Ponzoni ◽  
S Davoli ◽  
C Paorici
Keyword(s):  
Wide Field ◽  
Field Mapping ◽  
First Order

scholarly journals Wide Field Mapping of 5C12

1991 ◽  
Vol 131 ◽  
pp. 253-256
Author(s):  
J. E. Okopi ◽  
L. B. Bååth
Keyword(s):  
Fourier Transform ◽  
Basic Assumption ◽  
Mapping Technique ◽  
Wide Field ◽  
Two Dimensional ◽  
Data Set ◽  
Field Mapping ◽  
Sky Brightness

AbstractThe existing method of producing radio maps from interferometric data set is based on the assumption that there is a two dimensional fourier transform relationship between the sky brightness and the measured visibility. In mapping of a very wide field, this basic assumption breaks down due to various practical problems, e.g. bandwidth smearing. We present a wide-field mapping technique which is aimed at resolving some of these problems. This technique has been successfully applied to our MERLIN observations of the 5C12 region covering an area of 1800”×l800”.

scholarly journals The use of beam-sets in the Analysis of wide-field maps from the CLFST

1991 ◽  
Vol 131 ◽  
pp. 180-183
Author(s):  
Em Waldram
Keyword(s):  
Low Frequency ◽  
Chromatic Aberration ◽  
Wide Field ◽  
Frequency Synthesis ◽  
Beam Shape ◽  
Mapping Problem ◽  
Field Mapping

AbstractThe Cambridge Low Frequency Synthesis Telescope (CLFST) has baselines which are offset from the E-W direction by about 3°. The wide-field mapping problem has been overcome by the use of beam-sets, or artificial maps consisting of grids of synthesized beams, which incorporate the effects of both the geometric and chromatic aberration. By appropriate interpolation we can find a good approximation to the beam-shape at any point on a map.

Contour Map Point Distribution and Surgeon Experience Level Affect Accuracy of Surgical Navigation in a Pilot Study

2021 ◽  
pp. 000348942110059
Author(s):  
Jason Talmadge ◽  
Zi Yang Jiang ◽  
Denna A. Zebda ◽  
William C. Yao ◽  
Amber U. Luong ◽  
...  
Keyword(s):  
Surgical Navigation ◽  
Wide Field ◽  
Contour Map ◽  
Point Distribution ◽  
Field Mapping ◽  
Contour Maps ◽  
Experienced Surgeon ◽  
Surgeon Experience ◽  
Resident Surgeon ◽  
The Impact

Background: Reliable use of surgical navigation depends upon the registration process. The gold standard is paired-point registration with bone-anchored fiducials, but contour-map registration is more practical. Surgeons may employ variable contour maps and less experienced team members often perform this critical step. The impact of these practices on target registration error (TRE) is not well-studied. Methods: A dry lab set-up consisting of a navigation system (Fusion ENT, Medtronic, Jacksonville, FL) and a sinus phantom with 2 mm radiopaque spheres in the sphenoid and ethmoid regions was developed. A CT (0.625 mm slice thickness) was obtained. Registration was performed with a contour-based protocol. Accuracy was determined using the software’s distance measurement tool. Registration was performed with narrow-field (NF; forehead points medial to the mid-pupillary line) and wide field (WF; entire forehead) contour maps. An experienced rhinologist and a resident surgeon performed each registration in triplicate and TRE at the sphenoid and ethmoid markers was measured in triplicate. Results: WF mapping had a lower TRE than NF (1.09 mm [95% Confidence Interval (CI) 0.96-1.22] vs 1.68 mm [95% CI 1.50-1.86]). The experienced surgeon had a lower TRE compared to the resident (1.21 mm [95% CI 1.08-1.34] vs 1.54 mm [95% CI 1.35-1.74]). Conclusions: In this navigation model, wide field mapping offers better accuracy than narrow-field mapping, and an experienced surgeon seemed to achieve better accuracy than a resident surgeon. These observations have potential implications for the use of this technology in the operating room.

STM studies of crystal growth

1991 ◽  
Vol 49 ◽  
pp. 374-375
Author(s):  
M. G. Lagally
Keyword(s):  
Crystal Growth ◽  
Molecular Beam ◽  
Chemical Vapor ◽  
Sputter Deposition ◽  
Field Of View ◽  
Scanning Tunneling ◽  
Wide Field ◽  
Tunneling Microscopy ◽  
Wide Field Of View ◽  
The One

It has been recognized since the earliest days of crystal growth that kinetic processes of all Kinds control the nature of the growth. As the technology of crystal growth has become ever more refined, with the advent of such atomistic processes as molecular beam epitaxy, chemical vapor deposition, sputter deposition, and plasma enhanced techniques for the creation of “crystals” as little as one or a few atomic layers thick, multilayer structures, and novel materials combinations, the need to understand the mechanisms controlling the growth process is becoming more critical. Unfortunately, available techniques have not lent themselves well to obtaining a truly microscopic picture of such processes. Because of its atomic resolution on the one hand, and the achievable wide field of view on the other (of the order of micrometers) scanning tunneling microscopy (STM) gives us this opportunity. In this talk, we briefly review the types of growth kinetics measurements that can be made using STM. The use of STM for studies of kinetics is one of the more recent applications of what is itself still a very young field.

Laryngeal Manifestations of Autoimmune Diseases

2020 ◽  
Vol 5 (2) ◽  
pp. 439-456
Author(s):  
Jenny L. Pierce
Keyword(s):  
Autoimmune Disease ◽  
Autoimmune Diseases ◽  
Patient Outcomes ◽  
Correct Diagnosis ◽  
Upper Airway ◽  
Clinical Implications ◽  
Laryngeal Function ◽  
The Past ◽  
Referral Practices ◽  
Timely Referral

Purpose This review article provides an overview of autoimmune diseases and their effects on voice and laryngeal function. Method A literature review was conducted in PubMed. Combinations of the following keywords were used: “autoimmune disease and upper airway,” “larynx,” “cough,” “voice,” “dysphonia,” and “dyspnea.” Precedence was given to articles published in the past 10 years due to recent advances in this area and to review articles. Ultimately, 115 articles were included for review. Results Approximately 81 autoimmune diseases exist, with 18 of those highlighted in the literature as having laryngeal involvement. The general and laryngeal manifestations of these 18 are discussed in detail, in addition to the clinical implications for a laryngeal expert. Conclusions Voice, breathing, and cough symptoms may be an indication of underlying autoimmune disease. However, these symptoms are often similar to those in the general population. Appropriate differential diagnosis and timely referral practices maximize patient outcomes. Guidelines are provided to facilitate correct diagnosis when an autoimmune disease is suspected.

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