http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108010099-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T2207-10081 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T2211-416 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T11-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06T11-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T11-00 |
| filingDate | 2017-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108010099-B |
| titleOfInvention | X-ray multi-energy spectrum CT finite angle scanning and image iterative reconstruction method |
| abstract | The invention discloses an X-ray multi-energy spectrum CT finite angle scanning mode and an image iterative reconstruction method, which comprise the following steps: scanning an object in respective limited angle ranges by using X rays of a plurality of energy spectrums to obtain projection data of the object to be measured under each energy spectrum; and respectively reconstructing the images of the measured object under the energy spectrums based on the projection data. By utilizing the consistency of the measured object and the complementarity of the reconstructed images under the energy spectrums, a joint regularization method is designed, artifacts caused by finite angle scanning in the reconstructed images under the energy spectrums are effectively removed, and high-quality reconstructed images are obtained through calculation; and then calculating to obtain a base material image or a double-effect image of the measured object by using an image domain decomposition method or a projection domain decomposition method. The invention is suitable for image reconstruction of multi-energy spectrum CT under the condition of limited angle scanning, not only reduces X-ray dose and shortens scanning time, but also has the advantages of high reconstructed image quality, high convergence rate and the like. |
| priorityDate | 2017-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID458431896 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID24857 |
Total number of triples: 15.