A light-emitting diode (LED)-based multispectral imaging system in evaluating retinal vein occlusion

2015 ◽  
Vol 47 (7) ◽  
pp. 549-558 ◽  
Author(s):  
Yupeng Xu ◽  
Xiaoxiao Liu ◽  
Lu Cheng ◽  
Li Su ◽  
Xun Xu
Keyword(s):  
Retinal Vein Occlusion ◽  
Multispectral Imaging ◽  
Imaging System ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Vein Occlusion

scholarly journals Light-Emitting Diode Based Photoacoustic Imaging System

2020 ◽  
Author(s):  
Ebrahim Najafzadeh ◽  
Parastoo Farnia ◽  
Alireza Ahmadian ◽  
Hossein Ghadiri
Keyword(s):  
Imaging System ◽  
Photoacoustic Imaging ◽  
Light Emitting Diode ◽  
Imaging Modality ◽  
Optical Excitation ◽  
Poly Vinyl Alcohol ◽  
Ultrasound Images ◽  
Light Emitting ◽  
Non Invasive ◽  
Wide Range

Purpose: A Photoacoustic Imaging (PAI) as a non-invasive hybrid imaging modality has the potential to be used in a wide range of pre-clinical and clinical applications. There are different optical excitation sources that affect the performance of PAI systems. Our goal is proving the capability of the Light-Emitting Diode (LED) based PAI system for imaging of objects in different depths. Materials and Methods: In this study the Full Width of Half Maximum (FWHM) and Contrast to Noise Ratio (CNR) of LED-based PAI system is evaluated using agar, and Poly-Vinyl Alcohol Cryogel (PVA-C) phantoms. Results: The results show that axial and lateral FWHM of the photoacoustic image in agar phantom 1%, are 0.59 and 1.16 mm, respectively. It is capable of distinguishing objects about 250 µm. Furthermore, one of the main improvements of photoacoustic images is achieved by proposed LED-based system that is a 26% higher CNR versus the ultrasound images. Conclusion: Therefore, the provided technical characteristics in this study have made designed LED-based PAI system as a suitable tool for preclinical and clinical imaging.

scholarly journals Recovery of reflection spectra in a multispectral imaging system with light emitting diodes

2010 ◽  
Vol 18 (22) ◽  
pp. 23394 ◽  
Author(s):  
Laure Fauch ◽  
Ervin Nippolainen ◽  
Victor Teplov ◽  
Alexei A. Kamshilin
Keyword(s):  
Multispectral Imaging ◽  
Light Emitting Diodes ◽  
Imaging System ◽  
Reflection Spectra ◽  
Light Emitting

scholarly journals Multispectral imaging system based on light-emitting diodes for the detection of melanomas and basal cell carcinomas: a pilot study (erratum)

2017 ◽  
Vol 22 (7) ◽  
pp. 079801
Author(s):  
Xana Delpueyo ◽  
Meritxell Vilaseca ◽  
Santiago Royo ◽  
Miguel Ares ◽  
Laura Rey-Barroso ◽  
...  
Keyword(s):  
Pilot Study ◽  
Basal Cell ◽  
Multispectral Imaging ◽  
Light Emitting Diodes ◽  
Imaging System ◽  
Light Emitting ◽  
Basal Cell Carcinomas

scholarly journals Multispectral imaging of the ocular fundus using light emitting diode illumination

2010 ◽  
Vol 81 (9) ◽  
pp. 093706 ◽  
Author(s):  
N. L. Everdell ◽  
I. B. Styles ◽  
A. Calcagni ◽  
J. Gibson ◽  
J. Hebden ◽  
...  
Keyword(s):  
Multispectral Imaging ◽  
Light Emitting Diode ◽  
Ocular Fundus ◽  
Light Emitting
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