http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IE-921115-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2e3830f35387a1c32061dea3ee310851 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06F- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-055 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R33-54 |
| filingDate | 1992-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc260cc3d2dd6dfd4759181165305288 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_403eef20038df1db108c5ba115b44875 |
| publicationDate | 1992-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IE-921115-A1 |
| titleOfInvention | "System and method for generating optimal pulses and for analyzing heart wall motion using spatial modulation of magnetization" |
| abstract | A technique for generating "optimal" radio frequency pulses* for use in creating SPAMM imaging stripes and for quantitatively determining the displacements of the imaging stripes during a pre-imaging interval. The MR imaging operator is given an opportunity to select the desired stripe parameters for the SPAMM imaging stripe so that the resulting SPAMM imaging stripe will have the desired narrowness, sharpness, flatness and the like. These parameters are then used by an optimal pulse generating system of the invention to generate the input radio frequency pulse sequence which will produce the desired stripes. This technique allows a large family of pulse sequences with fairly similar performance to be generated by simply adjusting the relative weightings of criteria such as the narrowness, sharpness, flatness and the like for the SPAMM stripes. Tagging of the heart wall or some other soft tissue structure with a grid of planes of altered magnetization is then used to provide finite element analysis to quantify regional heart wall motion and the like. The intersections of the tagging stripes are used as a set of fiducial marks within the heart wall, and the motion of these intersections through the heart cycle is used to track the motion of the underlying tissue. In particular, this grid of reference points provides a basis for a triangular tiling of the heart wall between them. Then, by approximating the regional motion within each such triangular finite element as being locally homogenous, the motion of the triangular boundary completely defines the motion within it. |
| priorityDate | 1991-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.