Evidence map›Paper›PMID 36185397›Full record

ArticleIEEE transactions on terahertz science and technology2022

650 GHz imaging as alignment verification for millimeter wave corneal reflectometry.

Yong Hu, Mariangela Baggio, Shahab Dabironezare, Aleksi Tamminen, Brandon Toy, Juha Ala-Laurinaho, Elliott Brown, Nuria Llombart, Sophie X Deng, Vincent Wallace and 1 more

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In one paragraph

Article in IEEE transactions on terahertz science and technology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Triage ofBiomedical optics express · 2023
    Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Yong HuDepartment of Bioengineering, University of California, Los Angeles, CA 90095 USA.
Mariangela BaggioDepartment of Electronics and Nanoengineering, Aalto University, Espoo, FI-02150, Finland.
Shahab DabironezareCenter for Wireless Systems and Technology, Delft University of Technology, 2628 CD Delft, The Netherlands.
Aleksi TamminenDepartment of Electronics and Nanoengineering, Aalto University, Espoo, FI-02150, Finland.
Brandon ToyElectrical and Computer Engineering Department, University of California, Los Angeles, CA 90095 USA.
Juha Ala-LaurinahoDepartment of Electronics and Nanoengineering, Aalto University, Espoo, FI-02150, Finland.
Elliott BrownCollege of Engineering and Computer Science, Wright State University, Dayton, OH, 45435, USA.
Nuria LlombartCenter for Wireless Systems and Technology, Delft University of Technology, 2628 CD Delft, The Netherlands.
Sophie X DengCornea Division, University of California, Los Angeles, 90095-1436, USA.
Vincent WallaceDepartment of Engineering and Mathematical Sciences, University of Western Australia, Crawley, WA, 6009, Australia.
Zachary D TaylorDepartment of Electronics and Nanoengineering, Aalto University, Espoo, FI-02150, Finland.

Funding

Non-Contact, THz Sensing of Corneal HydrationR01EY021590 · NEI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI GRUNDFEST, WARREN S · 2011 to 2015
$1.9M
NEI NIH HHS R01 EY021590
6 · The paper itself

Abstract

A system concept for online alignment verification of millimeter-wave, corneal reflectometry is presented. The system utilizes beam scanning to generate magnitude-only reflectivity maps of the cornea at 650 GHz and compares these images to a precomputed/measured template map to confirm/reject sufficient alignment. A system utilizing 5 off-axis parabolic mirrors, a thin film beam splitter, and 2-axis galvanometric mirror was designed, simulated, and evaluated with geometric and physical optics. Simulation results informed the construction of a demonstrator system which was tested with a reference reflector. Similarity metrics computed with the aligned template and 26 misaligned positions, distributed on a 0.5 mm x 0.5 mm x 0.5 mm mesh, demonstrated sufficient misalignment detection sensitivity in 23 out of 26 positions. The results show that positional accuracy on the order of 0.5 mm is possible using 0.462 mm wavelength radiation due to the perturbation of coupling efficiency via beam distortion and beam walk-off.

Indexed as

Biological and medical imagingclinical instrumentsmedical diagnosticsTHz imaging of cornea

Identifiers

PMID36185397
PMCPMC9518788

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.