Matches in SemOpenAlex for { <https://semopenalex.org/work/W2045455960> ?p ?o ?g. }
Showing items 1 to 78 of
78
with 100 items per page.
- W2045455960 abstract "This paper describes a method for reconstructing images in magnetic resonance spectroscopic imaging (MRSI) using finite element methods and incorporating a priori information into the image reconstruction using a model. The reconstructed image is modeled as a projection of the desired metabolic intensity function onto a set of basis functions. For a general set of basis functions that span the reconstruction space, this problem is shown to result in a set of linear equations. For non- orthogonal basis functions, a singular value decomposition (SVD) technique can be used to obtain a least-squares estimate of the unknown coefficients. Polynomial basis functions with a large rectangular support region were tested and shown to lack the local control necessary to sufficiently resolve some important clinical features of interest (e.g., transmural myocardial infarction). Bilinear finite elements were selected for this problem because they are a basis set with very local support. Various sized finite elements were tested with simulated and phantom myocardium data similar to those that might be obtained from a gated phosphocreatine MRSI patient study. The conclusions of this investigation were: a) finite elements can give the desired local control to resolve clinically relevant lesions such as (simulated) transmural myocardial infarction, b) finite elements are robust in the presence of k-space additive Gaussian noise, and c)editing of the singular values was shown to be important to achieve optimum results. Remaining difficulties with the method include (a) O(N3) SVD computational complexity as the finite elements are made smaller, and (b) 'blockiness' in the reconstructed image due to the regular rectangular nature of elements." @default.
- W2045455960 created "2016-06-24" @default.
- W2045455960 creator A5002974355 @default.
- W2045455960 creator A5003344270 @default.
- W2045455960 creator A5075642922 @default.
- W2045455960 date "1994-05-11" @default.
- W2045455960 modified "2023-09-23" @default.
- W2045455960 title "<title>Reconstruction of MR spectroscopic images using finite elements and spatial domain priors</title>" @default.
- W2045455960 cites W106665084 @default.
- W2045455960 cites W1982061533 @default.
- W2045455960 cites W2027564103 @default.
- W2045455960 cites W2045675284 @default.
- W2045455960 cites W2051933044 @default.
- W2045455960 cites W2057176614 @default.
- W2045455960 cites W2084184095 @default.
- W2045455960 cites W2108943734 @default.
- W2045455960 cites W2129592944 @default.
- W2045455960 cites W2169738667 @default.
- W2045455960 doi "https://doi.org/10.1117/12.175058" @default.
- W2045455960 hasPublicationYear "1994" @default.
- W2045455960 type Work @default.
- W2045455960 sameAs 2045455960 @default.
- W2045455960 citedByCount "1" @default.
- W2045455960 crossrefType "proceedings-article" @default.
- W2045455960 hasAuthorship W2045455960A5002974355 @default.
- W2045455960 hasAuthorship W2045455960A5003344270 @default.
- W2045455960 hasAuthorship W2045455960A5075642922 @default.
- W2045455960 hasConcept C107673813 @default.
- W2045455960 hasConcept C11413529 @default.
- W2045455960 hasConcept C121332964 @default.
- W2045455960 hasConcept C12426560 @default.
- W2045455960 hasConcept C134306372 @default.
- W2045455960 hasConcept C135628077 @default.
- W2045455960 hasConcept C141379421 @default.
- W2045455960 hasConcept C154945302 @default.
- W2045455960 hasConcept C177769412 @default.
- W2045455960 hasConcept C22789450 @default.
- W2045455960 hasConcept C2524010 @default.
- W2045455960 hasConcept C28826006 @default.
- W2045455960 hasConcept C33923547 @default.
- W2045455960 hasConcept C41008148 @default.
- W2045455960 hasConcept C57493831 @default.
- W2045455960 hasConcept C5917680 @default.
- W2045455960 hasConcept C97355855 @default.
- W2045455960 hasConceptScore W2045455960C107673813 @default.
- W2045455960 hasConceptScore W2045455960C11413529 @default.
- W2045455960 hasConceptScore W2045455960C121332964 @default.
- W2045455960 hasConceptScore W2045455960C12426560 @default.
- W2045455960 hasConceptScore W2045455960C134306372 @default.
- W2045455960 hasConceptScore W2045455960C135628077 @default.
- W2045455960 hasConceptScore W2045455960C141379421 @default.
- W2045455960 hasConceptScore W2045455960C154945302 @default.
- W2045455960 hasConceptScore W2045455960C177769412 @default.
- W2045455960 hasConceptScore W2045455960C22789450 @default.
- W2045455960 hasConceptScore W2045455960C2524010 @default.
- W2045455960 hasConceptScore W2045455960C28826006 @default.
- W2045455960 hasConceptScore W2045455960C33923547 @default.
- W2045455960 hasConceptScore W2045455960C41008148 @default.
- W2045455960 hasConceptScore W2045455960C57493831 @default.
- W2045455960 hasConceptScore W2045455960C5917680 @default.
- W2045455960 hasConceptScore W2045455960C97355855 @default.
- W2045455960 hasLocation W20454559601 @default.
- W2045455960 hasOpenAccess W2045455960 @default.
- W2045455960 hasPrimaryLocation W20454559601 @default.
- W2045455960 hasRelatedWork W1595253429 @default.
- W2045455960 hasRelatedWork W2002594801 @default.
- W2045455960 hasRelatedWork W2041909844 @default.
- W2045455960 hasRelatedWork W2045455960 @default.
- W2045455960 hasRelatedWork W2128074666 @default.
- W2045455960 hasRelatedWork W2152188896 @default.
- W2045455960 hasRelatedWork W2158534421 @default.
- W2045455960 hasRelatedWork W2770426418 @default.
- W2045455960 hasRelatedWork W3175287677 @default.
- W2045455960 hasRelatedWork W2155146656 @default.
- W2045455960 isParatext "false" @default.
- W2045455960 isRetracted "false" @default.
- W2045455960 magId "2045455960" @default.
- W2045455960 workType "article" @default.