Matches in SemOpenAlex for { <https://semopenalex.org/work/W2058977349> ?p ?o ?g. }
Showing items 1 to 84 of
84
with 100 items per page.
- W2058977349 abstract "Purpose: Intravoxel incoherent motion (IVIM) magnetic resonance imaging (MRI) normally shows a low signal to noise ratio (SNR) due to the presence of noise which complicates and biases the estimation of quantitative diffusion parameters. In this study, a Non-local Means (NLM) approach was applied to remove the noise in oropharyngeal cancer IVIMMRI images. Methods: Eight male patients with squamous cell carcinoma of the oropharynx were included in this study under an approved IRB protocol. IVIM-MRI was carried out on a 3.0-T GE MRI. NLM denoising technique was performed using the MIPAV (V7, NIH). IVIM parameters (D, pure diffusion coefficient; f, perfusion fraction; D*, pseudodiffusion coefficient) were calculated on a pixel-by-pixel basis using a bi-exponential model implemented within ImageJ (V1.47, NIH) with ten b-values ranging from 0 – 800 s/mm2. SNR with and without denoising processing was calculated and compared in tumor regions. The agreements of IVIM-MRI parameters estimated between with and without NLM processing in tumor region were assessed by Bland-Altman plots. Results: Examples of IVIM images (b=800 s/mm2) and parametric maps (D, D* and f) with and without NLM applied are illustrated in Fig. 1 for an oropharynx cancer patient. Results of SNR and IVIM diffusion parameters between two different processing, as mean and standard deviation on 8 patients, are reported in Table 1. Bland-Altman plots (Fig. 2) between the two approaches show better concordance for D (0.22% ± 1.42%) and f (0.56% ± 3.49%), whereas larger discrepancies were found for D* (0.86% ± 6.25%). Conclusion: NLM approach gives better SNR and quantitative data quality, also shows a good agreement between the IVIM parameters processed with and without NLM approaches. Therefore, NLM denoising technique can be applied to improve performance in terms of denoising quality and estimation of IVIM parameter as a post-processing step without increasing the scanning time." @default.
- W2058977349 created "2016-06-24" @default.
- W2058977349 creator A5001478135 @default.
- W2058977349 creator A5005504553 @default.
- W2058977349 creator A5029301520 @default.
- W2058977349 creator A5030126720 @default.
- W2058977349 creator A5057603110 @default.
- W2058977349 creator A5063856758 @default.
- W2058977349 creator A5070761099 @default.
- W2058977349 creator A5071409978 @default.
- W2058977349 creator A5087117639 @default.
- W2058977349 date "2014-05-29" @default.
- W2058977349 modified "2023-09-26" @default.
- W2058977349 title "SU-E-QI-05: Denoising Intravoxel Incoherent Motion Magnetic Resonance Images Using Non-Local Mean Technique for Oropharyngeal Cancer Study" @default.
- W2058977349 doi "https://doi.org/10.1118/1.4888985" @default.
- W2058977349 hasPublicationYear "2014" @default.
- W2058977349 type Work @default.
- W2058977349 sameAs 2058977349 @default.
- W2058977349 citedByCount "0" @default.
- W2058977349 crossrefType "journal-article" @default.
- W2058977349 hasAuthorship W2058977349A5001478135 @default.
- W2058977349 hasAuthorship W2058977349A5005504553 @default.
- W2058977349 hasAuthorship W2058977349A5029301520 @default.
- W2058977349 hasAuthorship W2058977349A5030126720 @default.
- W2058977349 hasAuthorship W2058977349A5057603110 @default.
- W2058977349 hasAuthorship W2058977349A5063856758 @default.
- W2058977349 hasAuthorship W2058977349A5070761099 @default.
- W2058977349 hasAuthorship W2058977349A5071409978 @default.
- W2058977349 hasAuthorship W2058977349A5087117639 @default.
- W2058977349 hasConcept C105795698 @default.
- W2058977349 hasConcept C121332964 @default.
- W2058977349 hasConcept C126838900 @default.
- W2058977349 hasConcept C143409427 @default.
- W2058977349 hasConcept C154945302 @default.
- W2058977349 hasConcept C163294075 @default.
- W2058977349 hasConcept C22679943 @default.
- W2058977349 hasConcept C2989005 @default.
- W2058977349 hasConcept C33923547 @default.
- W2058977349 hasConcept C41008148 @default.
- W2058977349 hasConcept C46141821 @default.
- W2058977349 hasConcept C70816921 @default.
- W2058977349 hasConcept C71924100 @default.
- W2058977349 hasConcept C82641631 @default.
- W2058977349 hasConceptScore W2058977349C105795698 @default.
- W2058977349 hasConceptScore W2058977349C121332964 @default.
- W2058977349 hasConceptScore W2058977349C126838900 @default.
- W2058977349 hasConceptScore W2058977349C143409427 @default.
- W2058977349 hasConceptScore W2058977349C154945302 @default.
- W2058977349 hasConceptScore W2058977349C163294075 @default.
- W2058977349 hasConceptScore W2058977349C22679943 @default.
- W2058977349 hasConceptScore W2058977349C2989005 @default.
- W2058977349 hasConceptScore W2058977349C33923547 @default.
- W2058977349 hasConceptScore W2058977349C41008148 @default.
- W2058977349 hasConceptScore W2058977349C46141821 @default.
- W2058977349 hasConceptScore W2058977349C70816921 @default.
- W2058977349 hasConceptScore W2058977349C71924100 @default.
- W2058977349 hasConceptScore W2058977349C82641631 @default.
- W2058977349 hasLocation W20589773491 @default.
- W2058977349 hasOpenAccess W2058977349 @default.
- W2058977349 hasPrimaryLocation W20589773491 @default.
- W2058977349 hasRelatedWork W1022096373 @default.
- W2058977349 hasRelatedWork W1559141404 @default.
- W2058977349 hasRelatedWork W1577368083 @default.
- W2058977349 hasRelatedWork W1883700095 @default.
- W2058977349 hasRelatedWork W1929087758 @default.
- W2058977349 hasRelatedWork W2047644074 @default.
- W2058977349 hasRelatedWork W2053367259 @default.
- W2058977349 hasRelatedWork W2108358495 @default.
- W2058977349 hasRelatedWork W2549864824 @default.
- W2058977349 hasRelatedWork W2767463021 @default.
- W2058977349 hasRelatedWork W2907541996 @default.
- W2058977349 hasRelatedWork W2949113804 @default.
- W2058977349 hasRelatedWork W2966242695 @default.
- W2058977349 hasRelatedWork W2978759003 @default.
- W2058977349 hasRelatedWork W2980731661 @default.
- W2058977349 hasRelatedWork W3001389500 @default.
- W2058977349 hasRelatedWork W3006677422 @default.
- W2058977349 hasRelatedWork W3082925156 @default.
- W2058977349 hasRelatedWork W3126063778 @default.
- W2058977349 hasRelatedWork W3166650482 @default.
- W2058977349 isParatext "false" @default.
- W2058977349 isRetracted "false" @default.
- W2058977349 magId "2058977349" @default.
- W2058977349 workType "article" @default.