Northwestern University

Opticent, Inc.

Ji Yi

Vadim Backman

Phillip Byron Messersmith

Hao F Zhang

Jose G Rivera

Kvar C L Black

Wenzhong Liu

Kieren J Patel

Qing Wei

A method and system to measure and image the full optical scattering properties by inverse spectroscopic optical coherence tomography (ISOCT) is disclosed. Tissue is modeled as a medium with continuous refractive index (RI) fluctuation and such a fluctuation is described by the RI correlation functions. By measuring optical quantities of tissue (including the scattering power of the OCT spectrum, the reflection albedo &#x3b1; defined as the ratio or scattering coefficient &#x3bc;, and the back-scattering coefficient &#x3bc;), the RI correlation function can be inversely deduced and the full set of optical scattering properties can be obtained.

Biological tissue analysis by inverse spectroscopic optical coherence tomography

The present invention provides nanoparticles including a metallic core having a length along each axis of from 1 to 100 nanometers and a coating disposed on at least part of the surface of the metallic core, wherein the coating comprises polydopamine, along with methods for making and using such nanoparticles. The metallic core may be gold, silver or iron oxide and the polydopamine coating may have other substances bound to it, such as silver, targeting ligands or antibodies, or other therapeutic or imaging contrast agents. The disclosed nanoparticles can be targeted to cells for treating cancer or bacterial infections, and for use in diagnostic imaging.

Multifunctional metal nanoparticles having a polydopamine-based surface and methods of making and using the same

The present disclosure provides systems and methods for the determining a rate of change of one or more analyte concentrations in a target using non invasive non contact imaging techniques such as OCT. Generally, OCT data is acquired and optical information is extracted from OCT scans to quantitatively determine both a flow rate of fluid in the target and a concentration of one or more analytes. Both calculations can provide a means to determine a change in rate of an analyte over time. Example methods and systems of the disclosure may be used in assessing metabolism of a tissue, where oxygen is the analyte detected, or other functional states, and be generally used for the diagnosis, monitoring and treatment of disease.

Devices, methods, and systems of functional optical coherence tomography

A method and system to measure and image the full optical scattering properties by inverse spectroscopic optical coherence tomography (ISOCT) is disclosed. Tissue is modeled as a medium with continuous refractive index (RI) fluctuation and such a fluctuation is described by the RI correlation functions. By measuring optical quantities of tissue (including the scattering power of the OCT spectrum, the reflection albedo &#x3b1; defined as the ratio of scattering coefficient &#x3bc;, and the backscattering coefficient &#x3bc;), the RI correlation function can be inversely deduced and the full set of optical scattering properties can be obtained.

Certain examples provide a structured illumination microscopy system. The example system includes a laser source to generate excitation illumination directed toward a target. The example system includes a modulator to modulate the excitation illumination temporally in a controllable spatial pattern to be constructed on the target object to provide sub-diffractional resolution in a lateral direction with respect to the target. The example system includes two synchronized laser scanning mirror units in confocal arrangement, the laser scanning units to be synchronized and controlled by a computing device, a first of the scanning mirror units to receive the modulated excitation illumination and project the modulated excitation illumination on the target object and a second of the scanning mirror units to receive emission fluorescence from the target and project the emission fluorescence. The example system includes a detector to collect emission fluorescence from the target via the second of the scanning mirror units.

Growing community of inventors

Evanston, IL, United States of America

Ji Yi