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Novadaq Technologies Inc patents


Recent patent applications related to Novadaq Technologies Inc. Novadaq Technologies Inc is listed as an Agent/Assignee. Note: Novadaq Technologies Inc may have other listings under different names/spellings. We're not affiliated with Novadaq Technologies Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Novadaq Technologies Inc-related inventors


Methods and systems for characterizing tissue of a subject

Methods and systems for characterizing tissue of a subject are disclosed. The method includes receiving a time series of fluorescence images of the tissue of the subject wherein the images define a plurality of calculation regions, generating a plurality of time-intensity curves for the plurality of calculation regions, creating a set of parameter values for each calculation region, generating a total rank value for each calculation region by comparing the sets of parameter values, and converting the total rank value into a ranking map image. ... Novadaq Technologies Inc

Imaging a target fluorophore in a biological material in the presence of autofluorescence

Methods and systems are disclosed for extracting an image of a target fluorophore in a biological material, which involve inducing both autofluorescence of the biological material and fluorescence of the fluorophore, acquiring an image arising from both the autofluorescence of the biological material and the fluorophore, and an image arising only from the autofluorescence, subtracting the two images to produce an image representing only the fluorophore, wherein relative intensities of the excitation light used to induce the autofluorescence and the fluorescence are modulated prior to acquiring the images.. . ... Novadaq Technologies Inc

Pre-and-intra-operative localization of penile sentinel nodes

The invention provides methods for pre- and intra-operatively localizing penile sentinel lymph nodes by injection of fluorescent dyes into penile tumors.. . ... Novadaq Technologies Inc

Methods and systems for characterizing tissue of a subject utilizing a machine learning

Methods and systems for characterizing tissue of a subject include acquiring and receiving data for a plurality of time series of fluorescence images, identifying one or more attributes of the data relevant to a clinical characterization of the tissue, and categorizing the data into clusters based on the attributes such that the data in the same cluster are more similar to each other than the data in different clusters, wherein the clusters characterize the tissue. The methods and systems further include receiving data for a subject time series of fluorescence images, associating a respective cluster with each of a plurality of subregions in the subject time series of fluorescence images, and generating a subject spatial map based on the clusters for the plurality of subregions in the subject time series of fluorescence images. ... Novadaq Technologies Inc

Method for evaluating blush in myocardial tissue

Vessel perfusion and myocardial blush are determined by analyzing fluorescence signals obtained in a static region-of-interest (roi) in a collection of fluorescence images of myocardial tissue. The blush value is determined from the total intensity of the intensity values of image elements located within the smallest contiguous range of image intensity values containing a predefined fraction of a total measured image intensity of all image elements within the roi. ... Novadaq Technologies Inc

Closed cavity adjustable sensor mount systems and methods

Closed cavity adjustable sensor mount systems and methods are disclosed. The sensor mount systems include a sealed, closed cavity enclosing a sensor and forming a closed cavity sensor assembly. ... Novadaq Technologies Inc

Methods and systems for adaptive imaging for low light signal enhancement in medical visualization

Adaptive imaging methods and systems for generating enhanced low light video of an object for medical visualization are disclosed and include acquiring, with an image acquisition assembly, a sequence of reference frames and/or a sequence of low light video frames depicting the object, assessing relative movement between the image acquisition assembly and the object based on at least a portion of the acquired sequence of reference video frames or the acquired sequence of low light video frames, adjusting a level of image processing of the low light video frames based at least in part on the relative movement between the image acquisition assembly and the object, and generating a characteristic low light video output from a quantity of the low light video frames, wherein the quantity of the low light video frames is based on the adjusted level of image processing of the low light video frames.. . ... Novadaq Technologies Inc

Quantification of absolute blood flow in tissue using fluorescence-mediated photoplethysmography

A method, an apparatus, and a kit including the apparatus and a fluorescence agent are provided for measuring a time-varying change in an amount of blood in a tissue volume, and include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified beer-lambert law to obtain a measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent. ... Novadaq Technologies Inc

Imaging system for combine full-color reflectance and near-infrared imaging

An imaging system for acquisition of nir and full-color images includes a light source providing visible light and nir light to an area under observation, such as living tissue, a camera having one or more image sensors configured to separately detect blue reflectance light, green reflectance light, and combined red reflectance light/detected nir light returned from the area under observation. A controller in signal communication with the light source and the camera is configured to control the light source to continuously illuminate area under observation with temporally continuous blue/green illumination light and with red illumination light and nir excitation light. ... Novadaq Technologies Inc

Endoluminal introducer with contamination avoidance

Described herein are introducer devices and methods for using an introducer device to facilitate passing an endoluminal instrument to a target region of a body cavity. An introducer device may include a tubular member having an inner wall that defines a channel configured to receive the endoluminal instrument and a plurality of projections disposed in the channel at perimetrically spaced apart locations around the inner wall, where the projections extend inward and are configured to offset the endoluminal instrument from the inner wall, thereby creating a space between the endoluminal instrument and the inner wall. ... Novadaq Technologies Inc

Facilitating assessment of blood flow and tissue perfusion using fluorescence-mediated photoplethysmography

Methods and systems for facilitating assessment of blood flow in a tissue volume of a subject are disclosed. In some variations, the method may include: after a predetermined amount of a fluorescence agent has been administered to the subject, exciting the fluorescence agent in the tissue volume such that the excited fluorescence agent emits fluorescent light, acquiring fluorescence data based on the fluorescent light emitted during blood flow through the tissue volume, estimating a molar concentration of the fluorescence agent in the blood flowing through the tissue volume, and generating an assessment of blood flow in the tissue volume based at least in part on the fluorescence data and the estimated molar concentration of the fluorescence agent. ... Novadaq Technologies Inc

Configurable platform

A fluorescence imaging system for imaging an object, the system includes a white light provider that emits white light, an excitation light provider that emits excitation light in a plurality of excitation wavebands for causing the object to emit fluorescent light, a component that directs the white light and excitation light to the object and collects reflected white light and emitted fluorescent light from the object, a filter that blocks light in the excitation wavebands and transmits at least a portion of the reflected white light and fluorescent light, and an image sensor assembly that receives the transmitted reflected white light and the fluorescent light.. . ... Novadaq Technologies Inc

Systems and methods for illumination and imaging of a target

An imaging device may include a first illumination port to output first light having a first illumination distribution at a target to illuminate the target, a second illumination port to output second light having a second illumination distribution at the target to illuminate the target, the second illumination distribution being substantially similar to the first illumination distribution at the target, the second illumination port being spaced apart from the first illumination port, the first and second illumination distributions being simultaneously provided to the target and overlapping at the target. The illumination from the first and second ports may be matched to a same aspect ratio and field of view coverage as the imaging field of view.. ... Novadaq Technologies Inc

Methods and systems for alignment of a subject for medical imaging

Methods and systems for alignment of a subject for medical imaging are disclosed, and involve providing a reference image of an anatomical region of the subject, the anatomical region comprising a target tissue, processing the reference image to generate an alignment reference image, displaying the alignment reference image concurrently with real-time video of the anatomical region, and aligning the real-time video with the alignment reference image to overlay the real-time video with the alignment reference image. Following such alignment, the subject may be imaged using, for example, fluorescence imaging, wherein the fluorescence imaging may be performed by an image acquisition assembly aligned in accordance with the alignment.. ... Novadaq Technologies Inc

03/23/17 / #20170084024

Methods and systems for assessing healing of tissue

Methods and systems for assessing tissue of a subject include receiving a time series of signal intensity data capturing the transit of an imaging agent through tissue over a period of time, wherein the tissue comprises a plurality of calculation regions and wherein signal intensity in each calculation region over the period of time may be approximated by a time-intensity curve corresponding to the calculation region; determining, for each calculation region, a coefficient value that is related to at least a portion of the time-intensity curve corresponding to the calculation region; and converting the coefficient values across the plurality of calculation regions into a coefficient-derived image map.. . ... Novadaq Technologies Inc

03/23/17 / #20170084012

Methods and system for management of data derived from medical imaging

Systems and methods for storing data for a first time series of fluorescence images of the subject acquired during a first imaging session, storing data for a second time series of fluorescence images of the subject acquired during a second imaging session, receiving a request to view attributes of the subject, and in response to receiving the request, displaying a user interface on the display, the user interface comprising a first image showing a visually enhanced attribute of the subject, wherein the first image is generated from the data for the first time series of fluorescence images, and a second image showing the visually enhanced attribute of the subject, wherein the second image is generated from the data for the second time series of fluorescence images.. . ... Novadaq Technologies Inc

03/02/17 / #20170064258

Imaging systems and methods for displaying fluorescence and visible images

An endoscopic video system and method using a camera with a single color image sensor, for example a ccd color image sensor, for fluorescence and color imaging and for simultaneously displaying the images acquired in these imaging modes at video rates in real time is disclosed. The tissue under investigation is illuminated continuously with fluorescence excitation light and is further illuminated periodically using visible light outside of the fluorescence excitation wavelength range. ... Novadaq Technologies Inc

03/02/17 / #20170064257

Imaging systems and methods for displaying fluorescence and visible images

An endoscopic video system and method using a camera with a single color image sensor, for example a ccd color image sensor, for fluorescence and color imaging and for simultaneously displaying the images acquired in these imaging modes at video rates in real time is disclosed. The tissue under investigation is illuminated continuously with fluorescence excitation light and is further illuminated periodically using visible light outside of the fluorescence excitation wavelength range. ... Novadaq Technologies Inc

03/02/17 / #20170059878

Polarization dependent filter, system using the same, and associated kits and methods

A system includes a birefringent lens, and a polarization filter that transmits light of a first polarization output from the birefringent lens in a first direction and filters out light of a second polarization output from the birefringent lens along the first direction.. . ... Novadaq Technologies Inc








ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009



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