| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d7cd60b46a3b053d82e893948f2c0ba |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-47
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-1789
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B2562-043
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B2562-0242
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B2562-0233
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-3181
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2201-0696 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-4795
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-49
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-14553
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-14551
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-3151 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-1455
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-31
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-27
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-49
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-47 |
| filingDate |
1992-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41acce9d8e3b4eecfcbfee4cb39cb0b3 |
| publicationDate |
1993-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0568628-A1 |
| titleOfInvention |
Time and frequency domain spectroscopy determining hypoxia |
| abstract |
The invention relates to methods and apparatus for quantifying and localizing tissue hypoxia phenomena using spectroscopy both in the time domain and in the frequency domain. The present invention provides several alternative embodiments of apparatuses by which the saturation of a tissue region can be determined. In the embodiment using time resolution, a simplified system provides data that is directly proportional to tissue saturation. In the embodiments using phase modulation, a first variant provides phase shift data which can be converted into displayed information indicating the level of saturation. In a second variant, the real (270) and imaginary (272) components of the signal are separated and this data is used in conjunction with the data collected from the DC component of the signal to determine the level of saturation. Methods for determining the oxygenation / hemoglobin concentration of a tissue region are also described. |
| priorityDate |
1991-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |