FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2011844436> ?p ?o ?g. }

• W2011844436 endingPage "541" @default.
• W2011844436 startingPage "534" @default.
• W2011844436 abstract "Purpose: Current four dimensional magnetic resonance imaging (4D-MRI) techniques lack sufficient temporal/spatial resolution and consistent tumor contrast. To overcome these limitations, this study presents the development and initial evaluation of a new strategy for 4D-MRI which is based on retrospective k-space reordering. Methods: We simulated a k-space reordered 4D-MRI on a 4D digital extended cardiac-torso (XCAT) human phantom. A 2D echo planar imaging MRI sequence [frame rate (F) = 0.448 Hz; image resolution (R) = 256 × 256; number of k-space segments (NKS) = 4] with sequential image acquisition mode was assumed for the simulation. Image quality of the simulated “4D-MRI” acquired from the XCAT phantom was qualitatively evaluated, and tumor motion trajectories were compared to input signals. In particular, mean absolute amplitude differences (D) and cross correlation coefficients (CC) were calculated. Furthermore, to evaluate the data sufficient condition for the new 4D-MRI technique, a comprehensive simulation study was performed using 30 cancer patients’ respiratory profiles to study the relationships between data completeness (Cp) and a number of impacting factors: the number of repeated scans (NR), number of slices (NS), number of respiratory phase bins (NP), NKS, F, R, and initial respiratory phase at image acquisition (P0). As a proof-of-concept, we implemented the proposed k-space reordering 4D-MRI technique on a T2-weighted fast spin echo MR sequence and tested it on a healthy volunteer. Results: The simulated 4D-MRI acquired from the XCAT phantom matched closely to the original XCAT images. Tumor motion trajectories measured from the simulated 4D-MRI matched well with input signals (D = 0.83 and 0.83 mm, and CC = 0.998 and 0.992 in superior–inferior and anterior–posterior directions, respectively). The relationship between Cp and NR was found best represented by an exponential function (, when NS = 30, NP = 6). At a CP value of 95%, the relative error in tumor volume was 0.66%, indicating that NR at a CP value of 95% (NR,95%) is sufficient. It was found that NR,95% is approximately linearly proportional to NP (r = 0.99), and nearly independent of all other factors. The 4D-MRI images of the healthy volunteer clearly demonstrated respiratory motion in the diaphragm region with minimal motion induced noise or aliasing. Conclusions: It is feasible to generate respiratory correlated 4D-MRI by retrospectively reordering k-space based on respiratory phase. This new technology may lead to the next generation 4D-MRI with high spatiotemporal resolution and optimal tumor contrast, holding great promises to improve the motion management in radiotherapy of mobile cancers." @default.
• W2011844436 created "2016-06-24" @default.
• W2011844436 creator A5025690046 @default.
• W2011844436 creator A5046255358 @default.
• W2011844436 creator A5052884545 @default.
• W2011844436 creator A5063711265 @default.
• W2011844436 creator A5084629531 @default.
• W2011844436 date "2015-01-09" @default.
• W2011844436 modified "2023-09-23" @default.
• W2011844436 title "Four dimensional magnetic resonance imaging with retrospective <i>k</i> -space reordering: A feasibility study" @default.
• W2011844436 cites W11126013 @default.
• W2011844436 cites W1968848224 @default.
• W2011844436 cites W1983281817 @default.
• W2011844436 cites W1999438941 @default.
• W2011844436 cites W2008394816 @default.
• W2011844436 cites W2014407470 @default.
• W2011844436 cites W2021851834 @default.
• W2011844436 cites W2033077254 @default.
• W2011844436 cites W2039116526 @default.
• W2011844436 cites W2048841289 @default.
• W2011844436 cites W2051671429 @default.
• W2011844436 cites W2053356695 @default.
• W2011844436 cites W2060185911 @default.
• W2011844436 cites W2077751014 @default.
• W2011844436 cites W2082690978 @default.
• W2011844436 cites W2083256347 @default.
• W2011844436 cites W2091880153 @default.
• W2011844436 cites W2106777746 @default.
• W2011844436 cites W2124442094 @default.
• W2011844436 cites W2133025770 @default.
• W2011844436 cites W2142815405 @default.
• W2011844436 cites W2162034419 @default.
• W2011844436 cites W2165418584 @default.
• W2011844436 cites W2169340230 @default.
• W2011844436 cites W2579848543 @default.
• W2011844436 doi "https://doi.org/10.1118/1.4905044" @default.
• W2011844436 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4288543" @default.
• W2011844436 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25652474" @default.
• W2011844436 hasPublicationYear "2015" @default.
• W2011844436 type Work @default.
• W2011844436 sameAs 2011844436 @default.
• W2011844436 citedByCount "39" @default.
• W2011844436 countsByYear W20118444362015 @default.
• W2011844436 countsByYear W20118444362016 @default.
• W2011844436 countsByYear W20118444362017 @default.
• W2011844436 countsByYear W20118444362018 @default.
• W2011844436 countsByYear W20118444362019 @default.
• W2011844436 countsByYear W20118444362020 @default.
• W2011844436 countsByYear W20118444362021 @default.
• W2011844436 countsByYear W20118444362022 @default.
• W2011844436 countsByYear W20118444362023 @default.
• W2011844436 crossrefType "journal-article" @default.
• W2011844436 hasAuthorship W2011844436A5025690046 @default.
• W2011844436 hasAuthorship W2011844436A5046255358 @default.
• W2011844436 hasAuthorship W2011844436A5052884545 @default.
• W2011844436 hasAuthorship W2011844436A5063711265 @default.
• W2011844436 hasAuthorship W2011844436A5084629531 @default.
• W2011844436 hasBestOaLocation W20118444362 @default.
• W2011844436 hasConcept C104293457 @default.
• W2011844436 hasConcept C105702510 @default.
• W2011844436 hasConcept C115961682 @default.
• W2011844436 hasConcept C121332964 @default.
• W2011844436 hasConcept C126838900 @default.
• W2011844436 hasConcept C143409427 @default.
• W2011844436 hasConcept C154945302 @default.
• W2011844436 hasConcept C197413143 @default.
• W2011844436 hasConcept C205372480 @default.
• W2011844436 hasConcept C2989005 @default.
• W2011844436 hasConcept C33923547 @default.
• W2011844436 hasConcept C41008148 @default.
• W2011844436 hasConcept C523889960 @default.
• W2011844436 hasConcept C55020928 @default.
• W2011844436 hasConcept C71924100 @default.
• W2011844436 hasConceptScore W2011844436C104293457 @default.
• W2011844436 hasConceptScore W2011844436C105702510 @default.
• W2011844436 hasConceptScore W2011844436C115961682 @default.
• W2011844436 hasConceptScore W2011844436C121332964 @default.
• W2011844436 hasConceptScore W2011844436C126838900 @default.
• W2011844436 hasConceptScore W2011844436C143409427 @default.
• W2011844436 hasConceptScore W2011844436C154945302 @default.
• W2011844436 hasConceptScore W2011844436C197413143 @default.
• W2011844436 hasConceptScore W2011844436C205372480 @default.
• W2011844436 hasConceptScore W2011844436C2989005 @default.
• W2011844436 hasConceptScore W2011844436C33923547 @default.
• W2011844436 hasConceptScore W2011844436C41008148 @default.
• W2011844436 hasConceptScore W2011844436C523889960 @default.
• W2011844436 hasConceptScore W2011844436C55020928 @default.
• W2011844436 hasConceptScore W2011844436C71924100 @default.
• W2011844436 hasFunder F4320309326 @default.
• W2011844436 hasFunder F4320337351 @default.
• W2011844436 hasIssue "2" @default.
• W2011844436 hasLocation W20118444361 @default.
• W2011844436 hasLocation W20118444362 @default.
• W2011844436 hasLocation W20118444363 @default.
• W2011844436 hasLocation W20118444364 @default.
• W2011844436 hasOpenAccess W2011844436 @default.
• W2011844436 hasPrimaryLocation W20118444361 @default.
• W2011844436 hasRelatedWork W1857880207 @default.

• next