FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2020565708> ?p ?o ?g. }

• W2020565708 endingPage "66" @default.
• W2020565708 startingPage "53" @default.
• W2020565708 abstract "The quantitative evaluation of proton density by magnetic resonance imaging (MRI) is limited as a result of non-uniformities in the intensity distribution of the images and by the fact that only part of the protons of the tissue contribute to the image signal. This study was undertaken to estimate the accuracy of proton density measurements using a standard whole-body MR imager operating at 1.5 T. First, phantom experiments were performed to examine the possibility of an intensity correction. For the test phantom the systematical errors in the computed proton densities were reduced from 5 to 1% after correction. Secondly, proton transverse relaxation curves of biological tissues were measured in vitro on an MR spectrometer. A multi-exponential analysis of the data shows that for spin-echo times TE greater than 10 ms in total between 10 and 30% of the protons of the tissue do not contribute to the image signal. In all tissues a proton component with a free induction decay (FID) time T2* less than 32 microseconds was observed. In the time range TE greater than 10 ms two proton components can be distinguished in muscle and fatty tissue. Finally, it will be shown that a pixel-orientated two-exponential analysis of spin-echo images leads to a much more homogeneous density image than one-exponential computation, since tissue-specific biexponentiality and partial volume effects are taken into account. As a conclusion, the hydrogen density of biological tissues can be evaluated at best with an overall error of 10% from MR images for TE greater than 10 ms. This accuracy is insufficient for a pixel-orientated neutron therapy planning." @default.
• W2020565708 created "2016-06-24" @default.
• W2020565708 creator A5005613058 @default.
• W2020565708 creator A5028261654 @default.
• W2020565708 creator A5079653633 @default.
• W2020565708 date "1990-01-01" @default.
• W2020565708 modified "2023-10-18" @default.
• W2020565708 title "Evaluation of proton density by magnetic resonance imaging: phantom experiments and analysis of multiple component proton transverse relaxation" @default.
• W2020565708 cites W1987007489 @default.
• W2020565708 cites W2000347292 @default.
• W2020565708 cites W2011435635 @default.
• W2020565708 cites W2016494060 @default.
• W2020565708 cites W2024949211 @default.
• W2020565708 cites W2027032089 @default.
• W2020565708 cites W2037243628 @default.
• W2020565708 cites W2044658149 @default.
• W2020565708 cites W2054199306 @default.
• W2020565708 cites W2054473766 @default.
• W2020565708 cites W2065109272 @default.
• W2020565708 cites W2087070363 @default.
• W2020565708 cites W2089369383 @default.
• W2020565708 cites W2132002067 @default.
• W2020565708 cites W2149753856 @default.
• W2020565708 doi "https://doi.org/10.1088/0031-9155/35/1/006" @default.
• W2020565708 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/2154829" @default.
• W2020565708 hasPublicationYear "1990" @default.
• W2020565708 type Work @default.
• W2020565708 sameAs 2020565708 @default.
• W2020565708 citedByCount "37" @default.
• W2020565708 countsByYear W20205657082013 @default.
• W2020565708 countsByYear W20205657082014 @default.
• W2020565708 countsByYear W20205657082015 @default.
• W2020565708 countsByYear W20205657082019 @default.
• W2020565708 countsByYear W20205657082020 @default.
• W2020565708 countsByYear W20205657082021 @default.
• W2020565708 countsByYear W20205657082022 @default.
• W2020565708 crossrefType "journal-article" @default.
• W2020565708 hasAuthorship W2020565708A5005613058 @default.
• W2020565708 hasAuthorship W2020565708A5028261654 @default.
• W2020565708 hasAuthorship W2020565708A5079653633 @default.
• W2020565708 hasConcept C104293457 @default.
• W2020565708 hasConcept C120665830 @default.
• W2020565708 hasConcept C121332964 @default.
• W2020565708 hasConcept C126322002 @default.
• W2020565708 hasConcept C126838900 @default.
• W2020565708 hasConcept C134306372 @default.
• W2020565708 hasConcept C143409427 @default.
• W2020565708 hasConcept C151376022 @default.
• W2020565708 hasConcept C154954056 @default.
• W2020565708 hasConcept C159985019 @default.
• W2020565708 hasConcept C175249596 @default.
• W2020565708 hasConcept C185544564 @default.
• W2020565708 hasConcept C192562407 @default.
• W2020565708 hasConcept C199360897 @default.
• W2020565708 hasConcept C204323151 @default.
• W2020565708 hasConcept C2776029896 @default.
• W2020565708 hasConcept C2779843651 @default.
• W2020565708 hasConcept C30475298 @default.
• W2020565708 hasConcept C33923547 @default.
• W2020565708 hasConcept C36703968 @default.
• W2020565708 hasConcept C41008148 @default.
• W2020565708 hasConcept C46141821 @default.
• W2020565708 hasConcept C54516573 @default.
• W2020565708 hasConcept C71924100 @default.
• W2020565708 hasConcept C83042744 @default.
• W2020565708 hasConcept C90199342 @default.
• W2020565708 hasConcept C93038891 @default.
• W2020565708 hasConceptScore W2020565708C104293457 @default.
• W2020565708 hasConceptScore W2020565708C120665830 @default.
• W2020565708 hasConceptScore W2020565708C121332964 @default.
• W2020565708 hasConceptScore W2020565708C126322002 @default.
• W2020565708 hasConceptScore W2020565708C126838900 @default.
• W2020565708 hasConceptScore W2020565708C134306372 @default.
• W2020565708 hasConceptScore W2020565708C143409427 @default.
• W2020565708 hasConceptScore W2020565708C151376022 @default.
• W2020565708 hasConceptScore W2020565708C154954056 @default.
• W2020565708 hasConceptScore W2020565708C159985019 @default.
• W2020565708 hasConceptScore W2020565708C175249596 @default.
• W2020565708 hasConceptScore W2020565708C185544564 @default.
• W2020565708 hasConceptScore W2020565708C192562407 @default.
• W2020565708 hasConceptScore W2020565708C199360897 @default.
• W2020565708 hasConceptScore W2020565708C204323151 @default.
• W2020565708 hasConceptScore W2020565708C2776029896 @default.
• W2020565708 hasConceptScore W2020565708C2779843651 @default.
• W2020565708 hasConceptScore W2020565708C30475298 @default.
• W2020565708 hasConceptScore W2020565708C33923547 @default.
• W2020565708 hasConceptScore W2020565708C36703968 @default.
• W2020565708 hasConceptScore W2020565708C41008148 @default.
• W2020565708 hasConceptScore W2020565708C46141821 @default.
• W2020565708 hasConceptScore W2020565708C54516573 @default.
• W2020565708 hasConceptScore W2020565708C71924100 @default.
• W2020565708 hasConceptScore W2020565708C83042744 @default.
• W2020565708 hasConceptScore W2020565708C90199342 @default.
• W2020565708 hasConceptScore W2020565708C93038891 @default.
• W2020565708 hasIssue "1" @default.
• W2020565708 hasLocation W20205657081 @default.
• W2020565708 hasLocation W20205657082 @default.
• W2020565708 hasOpenAccess W2020565708 @default.

• next