Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Hongwu Ren"'
Autor:
Guenther Paltauf, Hongwu Ren, Gigi Au, J. Stuart Nelson, John A. Viator, Zhongping Chen, Steven L. Jacques, Scott A. Prahl
Publikováno v:
Lasers in Surgery and Medicine. 30:141-148
Author(s): Viator, John A; Au, Gigi; Paltauf, Guenther; Jacques, Steven L; Prahl, Scott A; Ren, Hongwu; Chen, Zhongping; Nelson, J Stuart | Abstract: Background and objectiveSuccessful laser treatment of port wine stain (PWS) birthmarks requires know
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9335647b25642378677adcfb0a15c1c
https://doi.org/10.1002/lsm.10015
https://doi.org/10.1002/lsm.10015
Autor:
Hongwu Ren, Xingde Li
Publikováno v:
Optics express. 14(13)
The phase-resolved (PR) method is widely used in optical Doppler tomography (ODT) to estimate flow velocity from sequential axial line (A-line) signals. However, the A-line signal contains clutter components induced by stationary or relative slow mov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaac4a2b111ac01013094cd05e37b5e5
https://pubmed.ncbi.nlm.nih.gov/19516783
https://pubmed.ncbi.nlm.nih.gov/19516783
Publikováno v:
Optics express. 10(5)
We have developed a novel real-time phase-resolved optical coherence tomography (OCT) and optical Doppler tomography (ODT) system using optical Hilbert transformation. By combining circularly polarized reference and linearly polarized sample signals,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f753b9db715d4e9262ce861c7bd1c69
https://pubmed.ncbi.nlm.nih.gov/19436351
https://pubmed.ncbi.nlm.nih.gov/19436351
Publikováno v:
SPIE Proceedings.
A video-rate laser scanning microscope was developed as an imaging engine to integrate with other photonic building blocks to fulfill various microscopic imaging applications. The system is quipped with diode laser source, resonant scanner, galvo sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa546fb397f9d381a096253a9039802b
https://doi.org/10.1117/12.761709
https://doi.org/10.1117/12.761709
Publikováno v:
Optics letters. 22(21)
A fractional Gabor transform (FRGT) is proposed. This new transform is a generalization of the conventional Gabor transform (GT) based on the Fourier transform to the windowed fractional Fourier transform (FRFT). The FRGT provides analyses of signals
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06a5d6f98a86ea1a9573b7fcfc7d6785
https://pubmed.ncbi.nlm.nih.gov/18188303
https://pubmed.ncbi.nlm.nih.gov/18188303
Publikováno v:
Ren, H; Brecke, KM; Ding, Z; Zhao, Y; Nelson, JS; & Chen, Z. (2002). Imaging and quantifying transverse flow velocity with the Doppler bandwidth in a phase-resolved functional optical coherence tomography. Optics Letters, 27(6), 409-411. doi: 10.1364/OL.27.000409. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/8mz4d4bt
The Doppler bandwidth extracted from the standard deviation of the frequency shift in phase-resolved functional optical coherence tomography (F-OCT) was used to image the velocity component that is transverse to the optical probing beam. It was found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::faa16f72a5f7e9c3fc01ba74a289bc66
https://pubmed.ncbi.nlm.nih.gov/18007817
https://pubmed.ncbi.nlm.nih.gov/18007817
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
We report a method for improving the accuracy in determining blood flow rate and small vessel size by implementing a delay line filter when processing real-time spectral domain optical coherence tomography images of flow.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21f07e4c77c870bc441aa1f52cda2b1d
https://doi.org/10.1109/cleo.2006.4628303
https://doi.org/10.1109/cleo.2006.4628303
Publikováno v:
Biomedical Optics.
A phase-shifted delay line filter is implemented in a spectral domain optical Doppler tomography system to suppress the influence of stationary scatterers on blood flow rate estimation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee14cd2ac674c55fd88fa24a0bf019bb
https://doi.org/10.1364/bio.2006.wc10
https://doi.org/10.1364/bio.2006.wc10
Autor:
Hongwu Ren, Richard Dekany
Large degree-of-freedom real-time adaptive optics (AO) control requires reconstruction algorithms that are computationally efficient and readily parallelized for hardware implementation. In particular, we find the wave-front reconstruction for the Hu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c88972d5e62aeb90efac3bcfc507e62a
https://resolver.caltech.edu/CaltechAUTHORS:RENoe04
https://resolver.caltech.edu/CaltechAUTHORS:RENoe04
Autor:
Woonggyu Jung, Hongwu Ren, Ronald S. Walton, Jun Zhang, Zhongping Chen, Zhihua Ding, J. Stuart Nelson
Publikováno v:
SPIE Proceedings.
A phase-resolved polarization sensitive optical coherence tomography (PS-OCT) system was used to determine the burn depth of in vivo tissue non-invasively. The phase retardation information was obtained by processing the analytical interference fring
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58a0350e4092a4a65fb2a88ba5cea99b
https://doi.org/10.1117/12.529874
https://doi.org/10.1117/12.529874