| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8d0f10d81a44adb3a0f44ef3742d65ae |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-502 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-4208
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-0407
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-5205
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-502
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-4266
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-4275
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-4241
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-582
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-482
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-5258
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B6-032 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B6-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B6-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B6-00 |
| filingDate |
2020-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ac1848fd00b9cf3069cb12ac3d54749
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4cf5e84d6bb895c0bc29a0ca7fee29ca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3786926fdd70aec4b9f066c4ec39beca |
| publicationDate |
2020-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2020323508-A1 |
| titleOfInvention |
Method and apparatus for computed tomography (ct) and material decomposition with pile-up correction calibrated using real pulse pileup effect and detector response |
| abstract |
An apparatus and method are described using a forward model to correct pulse pileup in spectrally resolved X-ray projection data from photon-counting detectors (PCDs). To calibrate the forward model, which represents each order of pileup using a respective pileup response matrix (PRM), an optimization search determines the elements of the PRMs that optimize an objective function measuring agreement between the spectra of recorded counts affected by pulse pileup and the estimated counts generated using forward model of pulse pileup. The spectrum of the recorded counts in the projection data is corrected using the calibrated forward model, by determining an argument value that optimizes the objective function, the argument being either a corrected X-ray spectrum or the projection lengths of a material decomposition. Images for material components of the material decomposition are then reconstructed using the corrected projection data. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11179116-B2 |
| priorityDate |
2018-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |