FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1999031129> ?p ?o ?g. }

• W1999031129 endingPage "767" @default.
• W1999031129 startingPage "758" @default.
• W1999031129 abstract "► Impact of variations in sound speed and backscatter on attenuation estimation. ► Bias present in attenuation estimate when reference SOS is higher or lower than sample. ► Hybrid method is least dependent on backscatter intensity and SOS variation. Quantitative ultrasound features such as the attenuation slope, sound speed and scatterer size, have been utilized to evaluate pathological variations in soft tissues such as the liver and breast. However, the impact of variations in the sound speed and backscatter due to underlying fat content or fibrotic changes, on the attenuation slope has not been addressed. Both numerical and acoustically uniform tissue-mimicking experimental phantoms are used to demonstrate the impact of sound speed variations on attenuation slope using clinical real-time ultrasound scanners equipped with linear array transducers. Radiofrequency data at center frequencies of 4 and 5 MHz are acquired for the experimental and numerical phantoms respectively. Numerical phantom sound speeds between 1480 and 1600 m/s in increments of 20 m/s for attenuation coefficients of 0.3, 0.4, 0.5, 0.6, and 0.7 dB/cm/MHz are simulated. Variations in the attenuation slope when the backscatter intensity of the sample is equal, 3 dB higher, and 3 dB lower than the reference is also evaluated. The sound speed for the experimental tissue-mimicking phantoms were 1500, 1540, 1560 and 1580 m/s respectively, with an attenuation coefficient of 0.5 dB/cm/MHz. Radiofrequency data is processed using three different attenuation estimation algorithms, i.e. the reference phantom, centroid downshift, and a hybrid method. In both numerical and experimental phantoms our results indicate a bias in attenuation slope estimates when the reference phantom sound speed is higher (overestimation) or lower (underestimation) than that of the sample. This bias is introduced via a small spectral shift in the normalized power spectra of the reference and sample with different sound speeds. The hybrid method provides the best estimation performance, especially for sample attenuation coefficient values lower than that of the reference phantom. The performance of all the methods deteriorates when the attenuation coefficient of the reference phantom is lower than that of the sample. In addition, the hybrid method is the least sensitive to sample backscatter intensity variations." @default.
• W1999031129 created "2016-06-24" @default.
• W1999031129 creator A5039666099 @default.
• W1999031129 creator A5070889646 @default.
• W1999031129 creator A5089177721 @default.
• W1999031129 date "2011-08-01" @default.
• W1999031129 modified "2023-09-23" @default.
• W1999031129 title "Theoretical and phantom based investigation of the impact of sound speed and backscatter variations on attenuation slope estimation" @default.
• W1999031129 cites W1798861396 @default.
• W1999031129 cites W1910869988 @default.
• W1999031129 cites W1965989838 @default.
• W1999031129 cites W1971791956 @default.
• W1999031129 cites W1976663288 @default.
• W1999031129 cites W1989042134 @default.
• W1999031129 cites W1994097584 @default.
• W1999031129 cites W2000120583 @default.
• W1999031129 cites W2001008655 @default.
• W1999031129 cites W2009441128 @default.
• W1999031129 cites W2012126091 @default.
• W1999031129 cites W2013785624 @default.
• W1999031129 cites W2020219536 @default.
• W1999031129 cites W2025245247 @default.
• W1999031129 cites W2025306413 @default.
• W1999031129 cites W2034087479 @default.
• W1999031129 cites W2046358809 @default.
• W1999031129 cites W2060677699 @default.
• W1999031129 cites W2061268828 @default.
• W1999031129 cites W2061554142 @default.
• W1999031129 cites W2065416638 @default.
• W1999031129 cites W2076770432 @default.
• W1999031129 cites W2095420574 @default.
• W1999031129 cites W2096469096 @default.
• W1999031129 cites W2102423385 @default.
• W1999031129 cites W2106822551 @default.
• W1999031129 cites W2120694449 @default.
• W1999031129 cites W2144692083 @default.
• W1999031129 cites W2150700889 @default.
• W1999031129 cites W2150847578 @default.
• W1999031129 cites W2171857449 @default.
• W1999031129 cites W2336109758 @default.
• W1999031129 cites W2341140623 @default.
• W1999031129 doi "https://doi.org/10.1016/j.ultras.2011.03.004" @default.
• W1999031129 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3183956" @default.
• W1999031129 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21477832" @default.
• W1999031129 hasPublicationYear "2011" @default.
• W1999031129 type Work @default.
• W1999031129 sameAs 1999031129 @default.
• W1999031129 citedByCount "14" @default.
• W1999031129 countsByYear W19990311292012 @default.
• W1999031129 countsByYear W19990311292013 @default.
• W1999031129 countsByYear W19990311292014 @default.
• W1999031129 countsByYear W19990311292015 @default.
• W1999031129 countsByYear W19990311292016 @default.
• W1999031129 countsByYear W19990311292017 @default.
• W1999031129 countsByYear W19990311292018 @default.
• W1999031129 countsByYear W19990311292019 @default.
• W1999031129 countsByYear W19990311292020 @default.
• W1999031129 countsByYear W19990311292021 @default.
• W1999031129 countsByYear W19990311292022 @default.
• W1999031129 crossrefType "journal-article" @default.
• W1999031129 hasAuthorship W1999031129A5039666099 @default.
• W1999031129 hasAuthorship W1999031129A5070889646 @default.
• W1999031129 hasAuthorship W1999031129A5089177721 @default.
• W1999031129 hasBestOaLocation W19990311292 @default.
• W1999031129 hasConcept C104293457 @default.
• W1999031129 hasConcept C120665830 @default.
• W1999031129 hasConcept C121332964 @default.
• W1999031129 hasConcept C159774933 @default.
• W1999031129 hasConcept C184652730 @default.
• W1999031129 hasConcept C192562407 @default.
• W1999031129 hasConcept C200351514 @default.
• W1999031129 hasConcept C24890656 @default.
• W1999031129 hasConcept C30354325 @default.
• W1999031129 hasConcept C34951282 @default.
• W1999031129 hasConcept C41008148 @default.
• W1999031129 hasConcept C555944384 @default.
• W1999031129 hasConcept C56318395 @default.
• W1999031129 hasConcept C76155785 @default.
• W1999031129 hasConcept C76198728 @default.
• W1999031129 hasConceptScore W1999031129C104293457 @default.
• W1999031129 hasConceptScore W1999031129C120665830 @default.
• W1999031129 hasConceptScore W1999031129C121332964 @default.
• W1999031129 hasConceptScore W1999031129C159774933 @default.
• W1999031129 hasConceptScore W1999031129C184652730 @default.
• W1999031129 hasConceptScore W1999031129C192562407 @default.
• W1999031129 hasConceptScore W1999031129C200351514 @default.
• W1999031129 hasConceptScore W1999031129C24890656 @default.
• W1999031129 hasConceptScore W1999031129C30354325 @default.
• W1999031129 hasConceptScore W1999031129C34951282 @default.
• W1999031129 hasConceptScore W1999031129C41008148 @default.
• W1999031129 hasConceptScore W1999031129C555944384 @default.
• W1999031129 hasConceptScore W1999031129C56318395 @default.
• W1999031129 hasConceptScore W1999031129C76155785 @default.
• W1999031129 hasConceptScore W1999031129C76198728 @default.
• W1999031129 hasIssue "6" @default.
• W1999031129 hasLocation W19990311291 @default.
• W1999031129 hasLocation W19990311292 @default.
• W1999031129 hasLocation W19990311293 @default.

• next