http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H06209930-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_14c9ad767fb6d5e9dabfb770d4e82252 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S7-52077 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B06B1-0644 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S15-8956 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01S15-8925 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B8-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B06B1-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01S15-89 |
| filingDate | 1993-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8191c6a95fd9713c658255d68f729d9a |
| publicationDate | 1994-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H06209930-A |
| titleOfInvention | Interleaved curve type longitudinal mode ultrasonic transducer |
| abstract | (57) [Summary] [Objective] To provide a compact transducer that provides high resolution and relatively artifact-free ultrasound images. [Configuration] Ultrasound for intravascular examination with a series of interleaved eccentric elliptical electrodes. The electrodes are arranged on the back surface of a piezoelectric substrate which is a transducer and is alternately polarized in the thickness direction. The back side of the transducer is coupled to air and the front side is provided with an impedance matching layer. The front surface is a concave spherical surface to provide a geometric focus. The electrodes are driven at ultrasonic frequencies. This configuration provides longitudinal mode ultrasonic transmission through the front of the transducer. The eccentricity of the electrodes compensates for the strain exerted by the window having a cylindrical shape. Increasing the electrode pitch in the radial direction reduces inversion in the ultrasound image. This transducer provides high frequency endovascular examination and provides high resolution images without the use of a thin piezoelectric substrate which is not practical. In addition, geometric focus, predistortion, and speckle reduction all reduce artifacts in the resulting high resolution ultrasound image. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104668175-A |
| priorityDate | 1992-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.