FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2076446044> ?p ?o ?g. }

• W2076446044 endingPage "3745" @default.
• W2076446044 startingPage "3745" @default.
• W2076446044 abstract "Purpose: Multitaper methods for noise power spectrum (NPS) estimation potentially provide reduced variance and minimum bias over conventional periodogram NPS measurement. This is potentially beneficial for spectra that deviate significantly from a uniform white noise spectrum. Here, we compare NPS analysis by multitaper methods to conventional techniques. Methods: A methodological framework is presented for experimental analysis of the NPS of breast images, including 2D mammography and digital breast tomosynthesis. In conventional techniques, original image data are subdivided into overlapping regions (ROI) and the NPS from each region are averaged to reduce variance in the estimate. In the multitaper approach, the entire image is weighted by several tapers (windows) with the NPS calculated for each. The final multitaper estimate is obtained by a weighted sum of the NPS results for each taper. The summation is adjusted to minimize bias and variance in the estimate. To compare the performance between these two approaches, several mathematic breast phantoms with “anatomic noise” (structures) have been simulated by an inverse power-law spectrum in the form of P(f) = Kb /f̂B. Performance of both NPS estimators was assessed in spectrum variance, bias, spectral leakage, frequency resolution and in the accuracy of estimation of Kb and B.Results: Examination of spectrum variance versus frequency resolution (and bias) indicates that the multitaper approach is superior to single taper methods in the prevention of spectrum leakage and variance reduction. For all breast image cases studied, multitaper method gave a better estimation of Kb and B. Conclusions: This work indicates the potential of using multitaper method in spectral analysis of breast images. Without any shortening of the image data length, the bias is smaller and the frequency resolution is higher, relieving the compromise in choosing ROI size to balance reducing variance against loss of frequency resolution. This work was supported in part through a research collaboration with GE Healthcare." @default.
• W2076446044 created "2016-06-24" @default.
• W2076446044 creator A5017933943 @default.
• W2076446044 creator A5056200940 @default.
• W2076446044 creator A5069586144 @default.
• W2076446044 date "2011-06-01" @default.
• W2076446044 modified "2023-10-16" @default.
• W2076446044 title "TU-A-301-05: Spectral Analysis of Breast Images Using Multitaper Method" @default.
• W2076446044 doi "https://doi.org/10.1118/1.3613095" @default.
• W2076446044 hasPublicationYear "2011" @default.
• W2076446044 type Work @default.
• W2076446044 sameAs 2076446044 @default.
• W2076446044 citedByCount "1" @default.
• W2076446044 countsByYear W20764460442016 @default.
• W2076446044 crossrefType "journal-article" @default.
• W2076446044 hasAuthorship W2076446044A5017933943 @default.
• W2076446044 hasAuthorship W2076446044A5056200940 @default.
• W2076446044 hasAuthorship W2076446044A5069586144 @default.
• W2076446044 hasConcept C105795698 @default.
• W2076446044 hasConcept C113407356 @default.
• W2076446044 hasConcept C11413529 @default.
• W2076446044 hasConcept C115961682 @default.
• W2076446044 hasConcept C154945302 @default.
• W2076446044 hasConcept C168110828 @default.
• W2076446044 hasConcept C185429906 @default.
• W2076446044 hasConcept C19499675 @default.
• W2076446044 hasConcept C2777067715 @default.
• W2076446044 hasConcept C33923547 @default.
• W2076446044 hasConcept C41008148 @default.
• W2076446044 hasConcept C62644790 @default.
• W2076446044 hasConcept C75172450 @default.
• W2076446044 hasConcept C99498987 @default.
• W2076446044 hasConceptScore W2076446044C105795698 @default.
• W2076446044 hasConceptScore W2076446044C113407356 @default.
• W2076446044 hasConceptScore W2076446044C11413529 @default.
• W2076446044 hasConceptScore W2076446044C115961682 @default.
• W2076446044 hasConceptScore W2076446044C154945302 @default.
• W2076446044 hasConceptScore W2076446044C168110828 @default.
• W2076446044 hasConceptScore W2076446044C185429906 @default.
• W2076446044 hasConceptScore W2076446044C19499675 @default.
• W2076446044 hasConceptScore W2076446044C2777067715 @default.
• W2076446044 hasConceptScore W2076446044C33923547 @default.
• W2076446044 hasConceptScore W2076446044C41008148 @default.
• W2076446044 hasConceptScore W2076446044C62644790 @default.
• W2076446044 hasConceptScore W2076446044C75172450 @default.
• W2076446044 hasConceptScore W2076446044C99498987 @default.
• W2076446044 hasIssue "6Part28" @default.
• W2076446044 hasLocation W20764460441 @default.
• W2076446044 hasOpenAccess W2076446044 @default.
• W2076446044 hasPrimaryLocation W20764460441 @default.
• W2076446044 hasRelatedWork W1981653251 @default.
• W2076446044 hasRelatedWork W2027725437 @default.
• W2076446044 hasRelatedWork W2038510080 @default.
• W2076446044 hasRelatedWork W2076446044 @default.
• W2076446044 hasRelatedWork W2078674792 @default.
• W2076446044 hasRelatedWork W2186632138 @default.
• W2076446044 hasRelatedWork W3017085138 @default.
• W2076446044 hasRelatedWork W3136361142 @default.
• W2076446044 hasRelatedWork W4287258868 @default.
• W2076446044 hasRelatedWork W4313130483 @default.
• W2076446044 hasVolume "38" @default.
• W2076446044 isParatext "false" @default.
• W2076446044 isRetracted "false" @default.
• W2076446044 magId "2076446044" @default.
• W2076446044 workType "article" @default.