Near-infrared dental imaging using scanning fiber endoscope

2018 ◽  
Author(s):  
Yaxuan Zhou ◽  
Alireza Sadr ◽  
Robert C. Lee ◽  
Eric J. Seibel
Keyword(s):  
Near Infrared ◽  
Dental Imaging ◽  
Scanning Fiber Endoscope ◽  
Scanning Fiber

scholarly journals Near-Infrared Imaging of Artificial Enamel Caries Lesions with a Scanning Fiber Endoscope

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1419 ◽  
Author(s):  
Robert Lee ◽  
Yaxuan Zhou ◽  
Sara Finkleman ◽  
Alireza Sadr ◽  
Eric Seibel
Keyword(s):  
Near Infrared ◽  
Infrared Imaging ◽  
High Sensitivity ◽  
Near Infrared Imaging ◽  
Enamel Caries ◽  
Demineralized Enamel ◽  
Significant Difference ◽  
Scanning Fiber Endoscope ◽  
Scanning Fiber ◽  
Caries Lesions

Several studies have shown that near-infrared imaging has great potential for the detection of dental caries lesions. A miniature scanning fiber endoscope (SFE) operating at near-infrared (NIR) wavelengths was developed and used in this study to test whether the device could be used to discriminate demineralized enamel from sound enamel. Varying depths of artificial enamel caries lesions were prepared on 20 bovine blocks with smooth enamel surfaces. Samples were imaged with a SFE operating in the reflectance mode at 1310-nm and 1460-nm in both wet and dry conditions. The measurements acquired by the SFE operating at 1460-nm show significant difference between the sound and the demineralized enamel. There was a moderate positive correlation between the SFE measurements and micro-CT measurements, and the NIR SFE was able to detect the presence of demineralization with high sensitivity (0.96) and specificity (0.85). This study demonstrates that the NIR SFE can be used to detect early demineralization from sound enamel. In addition, the NIR SFE can differentiate varying severities of demineralization. With its very small form factor and maneuverability, the NIR SFE should allow clinicians to easily image teeth from multiple viewing angles in real-time.

scholarly journals Scanning Fiber Endoscope Improves Detection of 5-Aminolevulinic Acid–Induced Protoporphyrin IX Fluorescence at the Boundary of Infiltrative Glioma

2018 ◽  
Vol 113 ◽  
pp. e51-e69 ◽  
Author(s):  
Evgenii Belykh ◽  
Eric J. Miller ◽  
Danying Hu ◽  
Nikolay L. Martirosyan ◽  
Eric C. Woolf ◽  
...  
Keyword(s):  
Aminolevulinic Acid ◽  
Protoporphyrin Ix ◽  
Scanning Fiber Endoscope ◽  
Scanning Fiber

Optimal imaging windows of indocyanine green‐assisted near‐infrared dental imaging with rat model and its comparison to X‐ray imaging

2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Zhongqiang Li ◽  
Thomas Hartzler ◽  
Alexandra Ramos ◽  
Michelle L. Osborn ◽  
Yanping Li ◽  
...  
Keyword(s):  
Indocyanine Green ◽  
Rat Model ◽  
Near Infrared ◽  
X Ray ◽  
Dental Imaging ◽  
X Ray Imaging ◽  
Optimal Imaging

Mechanical Design and Analysis for a Scanning Fiber Endoscope

2001 ◽  
Author(s):  
Christopher M. Brown ◽  
Mark E. Fauver ◽  
Per G. Reinhall ◽  
Eric J. Seibel
Keyword(s):  
Mechanical Design ◽  
Near Field ◽  
Large Field ◽  
Optical Scanner ◽  
Therapeutic Procedures ◽  
Tapered Optical Fiber ◽  
Scanning Fiber Endoscope ◽  
Scanning Optical Microscopy ◽  
Scanning Fiber ◽  
Near Field Scanning

Abstract There is a need for smaller, more flexible, optical imaging tools for use in minimally invasive diagnostic and therapeutic procedures [1]. Towards this end, a novel technique of image acquisition has been developed based upon the controlled vibration of a waveguide and detection of light backscattered from the waveguide onto an object [2]. The anticipated result of this research is the creation of an optical scanner capable of operating at high frequency, with a large field-of-view (FOV) in a 1 mm diameter enclosure. The mechanics of this system have been explored for use in near-field scanning optical microscopy applications [3], and are now examined for use in a scanning fiber endoscope. Discussed in this report are the vibration characteristics of two possible waveguide geometries: a cylindrical and a tapered optical fiber.

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