http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2019223730-A1
Outgoing Links
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| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9d52e76abfb03fea5220bda586463d9d http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9bf7439808d578ab8c3698f7560fe4ab |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B2560-0223 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-14556 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-445 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-14551 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-0071 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-0261 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-02028 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-0205 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-7257 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-02405 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-1455 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-445 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-349 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-00 |
| filingDate | 2019-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f856423a83b5aa19981db6cab09e9982 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4bd479924c5e7e40a75b28ecd7c88157 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13bf4073b00c7b6c8433edf48abca8fe |
| publicationDate | 2019-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2019223730-A1 |
| titleOfInvention | Contactless System and Method For Assessing Tissue Viability and Other Hemodynamic Parameters |
| abstract | A contactless system for assessing tissue viability and other hemodynamic parameters includes one or more light sources configured to emit lights at a predetermined wavelength sensitive to hemoglobin concentration associated with spontaneous hemodynamic oscillations at tissue in a predetermined area of a human subject. One or more polarizers are each coupled to one or more of the one or more light sources and are configured to polarize the light to a polarized state such that the polarized light in the polarized state diffuses into the tissue in the predetermined area at a predetermined depth and the polarized light is maintained in the polarized state at the predetermined depth. One or more detectors each including a detector polarizer coupled thereto are configured to discriminate the light maintained in the polarized state and at the predetermined depth and are configured to generate a plurality of frames of the tissue in the predetermined area at the predetermined depth. A controller is coupled to the one or more light sources and the one or more detectors. The controller is configured to: acquire the plurality of frames, select a region of interest having the same coordinates for each of the plurality of frames, average the number of pixels within each region of interest to create a raw reference signal, detrend the raw reference signal to create a detrended raw reference signal, perform frequency domain analysis of the detrended raw reference signal, identify a frequency band of interest associated with the spontaneous hemodynamic oscillations, and perform an inverse fast Fourier transform within the frequency band of interest to generate a reference signal indicative of blood volume oscillations at a selected spontaneous hemodynamic oscillation. For each sample of the reference signal at a predetermined point in time, the controller multiplies the sample by each pixel of a frame at the same predetermined point in time to generate a three-dimensional coordinate matrix including a plurality of correlation matrix frames at each predetermined point in time. The controller adds the plurality of correlation matrix frames at each predetermined point in time to generate a two-dimensional hemodynamic map indicative of the strength of the spontaneous hemodynamic oscillation to assess the viability of the tissue in the predetermined area. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2021150305-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11426076-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023018846-A1 |
| priorityDate | 2018-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID226412265 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID5282412 |
Total number of triples: 31.