Rotating orthogonal polarization imaging for tissue imaging

2008 ◽  
Author(s):  
Stephen P. Morgan ◽  
Qun Zhu ◽  
Ian M. Stockford ◽  
John A. Crowe
Keyword(s):  
Tissue Imaging ◽  
Orthogonal Polarization ◽  
Polarization Imaging

Reliable Assessment of Skin Flap Viability Using Orthogonal Polarization Imaging

2003 ◽  
Vol 112 (2) ◽  
pp. 547-555 ◽  
Author(s):  
Wendy-Ann M. Olivier ◽  
Alexes Hazen ◽  
Jamie P. Levine ◽  
Hooman Soltanian ◽  
Seum Chung ◽  
...  
Keyword(s):  
Skin Flap ◽  
Orthogonal Polarization ◽  
Polarization Imaging ◽  
Flap Viability ◽  
Reliable Assessment

LIQUID CRYSTAL BASED ROTATING ORTHOGONAL POLARIZATION IMAGING SYSTEM

2009 ◽  
Vol 02 (03) ◽  
pp. 245-251 ◽  
Author(s):  
QUN ZHU ◽  
IAN M. STOCKFORD ◽  
JOHN A. CROWE ◽  
STEPHEN P. MORGAN
Keyword(s):  
Liquid Crystal ◽  
Imaging System ◽  
Polarization State ◽  
Ease Of Use ◽  
Orthogonal Polarization ◽  
Clinical Use ◽  
Scattering Medium ◽  
Scattering Media ◽  
Polarization Imaging ◽  
Manual Rotation

Rotating orthogonal polarization imaging provides images of the polarization properties of scattering media which are free from surface reflections. Previously the technique has been demonstrated using manually rotated Glan–Thompson polarizers to control and analyze the polarization state of the light entering and emerging from the tissue. This paper describes a system that performs these functions using liquid crystal retarders. The system is tested using a polarizing target embedded within a scattering medium and is compared with Monte Carlo simulations. The results compare well with those obtained with manual rotation of polarizers. The liquid crystal based approach has advantages over the previous system in terms of ease of use, speed, and repeatability and is therefore an important step towards taking the technique into routine clinical use.

Experimental and theoretical evaluation of rotating orthogonal polarization imaging

2009 ◽  
Vol 14 (3) ◽  
pp. 034006 ◽  
Author(s):  
Qun Zhu ◽  
Ian M. Stockford ◽  
John A. Crowe ◽  
Stephen P. Morgan
Keyword(s):  
Orthogonal Polarization ◽  
Theoretical Evaluation ◽  
Polarization Imaging

Rotating orthogonal polarization imaging

2008 ◽  
Vol 33 (13) ◽  
pp. 1503 ◽  
Author(s):  
Stephen P. Morgan ◽  
Qun Zhu ◽  
Ian M. Stockford ◽  
John A. Crowe
Keyword(s):  
Orthogonal Polarization ◽  
Polarization Imaging

Polarization imaging sensor for cell and tissue imaging and diagnostics

2006 ◽  
Author(s):  
Hongzhi Zhao ◽  
Qiushui Chen ◽  
Uwe Klimach ◽  
Yingyin Kevin Zou ◽  
Jianhua Xuan
Keyword(s):  
Tissue Imaging ◽  
Polarization Imaging ◽  
Imaging Sensor

Differential polarization imaging of sickled cells

1988 ◽  
Vol 46 ◽  
pp. 62-63
Author(s):  
Marcos F. Maestre
Keyword(s):  
Optical Properties ◽  
Theoretical Approach ◽  
Polarized Light ◽  
Polarization Microscopy ◽  
Spectroscopic Techniques ◽  
Polarization Imaging ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Microscopic Scale ◽  
Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

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