FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4382400565> ?p ?o ?g. }

• W4382400565 abstract "Purpose Single-photon emission computed tomography (SPECT) is an important tool for myocardial perfusion imaging (MPI). Mechanical collimators cause the resolution-sensitivity trade-off in the existing cardiac SPECT systems, which hinders fast cardiac scan capability. In this work, we propose a novel collimator-less cardiac SPECT system with interspaced mosaic-patterned scintillators, aiming to significantly improve sensitivity and reduce scan time without trading-off image resolution. Methods We propose to assemble a collimator-less cardiac SPECT with 7 mosaic-patterned detector modules forming a half-ring geometry. The detector module consists of 10 blocks, each of which is assembled with 768 sparsely distributed scintillators with a size of 1.68 mm × 1.68 mm × 20 mm, forming a mosaic pattern in the trans-axial direction. Each scintillator bar contains 5 GAGG(Ce) scintillators and 5 optical-guide elements, forming a mosaic pattern in the axial direction. In the Monte Carlo simulations, the in-plane resolution and axial resolution are evaluated using a hot-rod phantom and 5 disk phantoms, respectively. We simulate a cardiac phantom that is placed in a water-filled cylinder and evaluate the image performance with different data acquisition time. We perform image reconstruction with the expectation–maximization algorithm using system matrices derived from the simulation of a uniform cylindrical source filling the field-of-view (FOV). Besides, a 2-D prototype system is designed to demonstrate the feasibility of the collimator-less imaging concept. Results In the simulation system, the sensitivity is 16.31% ± 8.85% in a 180 mm (Φ) × 100 mm (L) FOV. The 6-mm rods in the hot rod phantom and the 5-mm disks in the disk phantom are clearly separable. Satisfactory MPI image quality is achieved in the cardiac phantom study with an acquisition time of 30 s. In prototype experiments, the point sources with an 8 mm center-to-center distance are clearly separable at different positions across the FOV. Conclusion The study reveals a promising approach to high-sensitivity SPECT imaging without a heavy-metal collimator. In cardiac imaging, this approach opens the way to a very fast cardiac scan with good resolution. Further works are ongoing to build a practical 3-D imaging system based on the existing design." @default.
• W4382400565 created "2023-06-29" @default.
• W4382400565 creator A5022522382 @default.
• W4382400565 creator A5043456017 @default.
• W4382400565 creator A5052813958 @default.
• W4382400565 creator A5070211309 @default.
• W4382400565 creator A5092351446 @default.
• W4382400565 date "2023-06-28" @default.
• W4382400565 modified "2023-10-18" @default.
• W4382400565 title "High-sensitivity cardiac SPECT system design with collimator-less interspaced mosaic-patterned scintillators" @default.
• W4382400565 cites W1572185781 @default.
• W4382400565 cites W1957688515 @default.
• W4382400565 cites W1971310266 @default.
• W4382400565 cites W1983281817 @default.
• W4382400565 cites W2006886350 @default.
• W4382400565 cites W2009096075 @default.
• W4382400565 cites W2021388245 @default.
• W4382400565 cites W2043884149 @default.
• W4382400565 cites W2046327373 @default.
• W4382400565 cites W2078912422 @default.
• W4382400565 cites W2089172939 @default.
• W4382400565 cites W2102489738 @default.
• W4382400565 cites W2107892208 @default.
• W4382400565 cites W2138884296 @default.
• W4382400565 cites W2146837447 @default.
• W4382400565 cites W2153062290 @default.
• W4382400565 cites W2154744699 @default.
• W4382400565 cites W2166624180 @default.
• W4382400565 cites W2168703939 @default.
• W4382400565 cites W2281800705 @default.
• W4382400565 cites W2287731000 @default.
• W4382400565 cites W2440430650 @default.
• W4382400565 cites W2442137458 @default.
• W4382400565 cites W2760321936 @default.
• W4382400565 cites W2792844900 @default.
• W4382400565 cites W2804893905 @default.
• W4382400565 cites W2912204292 @default.
• W4382400565 cites W3008159865 @default.
• W4382400565 cites W3061067441 @default.
• W4382400565 cites W3139183992 @default.
• W4382400565 cites W3154479898 @default.
• W4382400565 cites W3213254941 @default.
• W4382400565 cites W4316466883 @default.
• W4382400565 doi "https://doi.org/10.3389/fmed.2023.1145351" @default.
• W4382400565 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37448793" @default.
• W4382400565 hasPublicationYear "2023" @default.
• W4382400565 type Work @default.
• W4382400565 citedByCount "0" @default.
• W4382400565 crossrefType "journal-article" @default.
• W4382400565 hasAuthorship W4382400565A5022522382 @default.
• W4382400565 hasAuthorship W4382400565A5043456017 @default.
• W4382400565 hasAuthorship W4382400565A5052813958 @default.
• W4382400565 hasAuthorship W4382400565A5070211309 @default.
• W4382400565 hasAuthorship W4382400565A5092351446 @default.
• W4382400565 hasBestOaLocation W43824005651 @default.
• W4382400565 hasConcept C104293457 @default.
• W4382400565 hasConcept C105795698 @default.
• W4382400565 hasConcept C115961682 @default.
• W4382400565 hasConcept C120665830 @default.
• W4382400565 hasConcept C121332964 @default.
• W4382400565 hasConcept C127413603 @default.
• W4382400565 hasConcept C150627866 @default.
• W4382400565 hasConcept C161694136 @default.
• W4382400565 hasConcept C192562407 @default.
• W4382400565 hasConcept C19499675 @default.
• W4382400565 hasConcept C205372480 @default.
• W4382400565 hasConcept C21200559 @default.
• W4382400565 hasConcept C24326235 @default.
• W4382400565 hasConcept C2779200277 @default.
• W4382400565 hasConcept C31972630 @default.
• W4382400565 hasConcept C33923547 @default.
• W4382400565 hasConcept C41008148 @default.
• W4382400565 hasConcept C55020928 @default.
• W4382400565 hasConcept C94915269 @default.
• W4382400565 hasConceptScore W4382400565C104293457 @default.
• W4382400565 hasConceptScore W4382400565C105795698 @default.
• W4382400565 hasConceptScore W4382400565C115961682 @default.
• W4382400565 hasConceptScore W4382400565C120665830 @default.
• W4382400565 hasConceptScore W4382400565C121332964 @default.
• W4382400565 hasConceptScore W4382400565C127413603 @default.
• W4382400565 hasConceptScore W4382400565C150627866 @default.
• W4382400565 hasConceptScore W4382400565C161694136 @default.
• W4382400565 hasConceptScore W4382400565C192562407 @default.
• W4382400565 hasConceptScore W4382400565C19499675 @default.
• W4382400565 hasConceptScore W4382400565C205372480 @default.
• W4382400565 hasConceptScore W4382400565C21200559 @default.
• W4382400565 hasConceptScore W4382400565C24326235 @default.
• W4382400565 hasConceptScore W4382400565C2779200277 @default.
• W4382400565 hasConceptScore W4382400565C31972630 @default.
• W4382400565 hasConceptScore W4382400565C33923547 @default.
• W4382400565 hasConceptScore W4382400565C41008148 @default.
• W4382400565 hasConceptScore W4382400565C55020928 @default.
• W4382400565 hasConceptScore W4382400565C94915269 @default.
• W4382400565 hasFunder F4320321001 @default.
• W4382400565 hasFunder F4320322624 @default.
• W4382400565 hasFunder F4320322919 @default.
• W4382400565 hasLocation W43824005651 @default.
• W4382400565 hasLocation W43824005652 @default.
• W4382400565 hasLocation W43824005653 @default.
• W4382400565 hasOpenAccess W4382400565 @default.

• next