http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S60104277-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_80787665b837ed3eb503bbcd27c0043a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01T1-2985 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01T1-161 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01T1-29 |
| filingDate | 1983-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_39c9f189fbaff0cc53c919d322047c48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b9b594f30b96d45ee2c38e5b92c5f12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_83a125d70da8279f58795f9e93c59fff |
| publicationDate | 1985-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S60104277-A |
| titleOfInvention | Positron ct device |
| abstract | PURPOSE:To make a fan fraction small without narrowing a field of view, and to reduce chance simultaneous counting noise by moving a group split point of a detector group. CONSTITUTION:When a group of detectors 401 is split into (n) groups, and a split point (a) is moved by an na detector portion whenever a detector ring 402 executes one scan, the distribution (theta,t) corresponding to a simultaneous counting line moves by DELTAtheta=2pi(na/nt) in the theta direction. In the expression, theta: t: and nt denote an angle between the simultaneous counting line and the (y) axis; a distance from the center of the ring 402 of the simultaneous measuring line; and the number of all detectors on the ring, respectively. Accordingly, by the movement of the split point (a) of once, the field of view is widened by DELTAr, a new sample point is generated, and a fraction (f)=m/n of a ratio of the number of opposed detectors (m) counted simultaneously against one detector, and the number of detectors nt is not made large but can remain a small value without narrowing the field of view. As a result, chance simultaneous counting noise is reduced, and a picture quality of a positron CT device can be raised. |
| priorityDate | 1983-11-11-04:00^^<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/compound/CID28718 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419513094 |
Total number of triples: 16.