Matches in SemOpenAlex for { <https://semopenalex.org/work/W2471567768> ?p ?o ?g. }
Showing items 1 to 76 of
76
with 100 items per page.
- W2471567768 abstract "Purpose:To propose a new method that provides a positive contrast visualization of the prostate brachytherapy seeds using the phase information from MR images. Additionally, the feasibility of using the processed phase information to distinguish seeds from calcifications is explored.Methods:A gel phantom was constructed using 2% agar dissolved in 1 L of distilled water. Contrast agents were added to adjust the relaxation times. Four iodine-125 (Eckert & Ziegler SML86999) dummy seeds were placed at different orientations with respect to the main magnetic field (B0). Calcifications were obtained from a sheep femur cortical bone due to its close similarity to human bone tissue composition. Five samples of calcifications were shaped into different dimensions with lengths ranging between 1.2 – 6.1 mm.MR imaging was performed on a 3T Philips Achieva using an 8-channel head coil. Eight images were acquired at eight echo-times using a multi-gradient echo sequence. Spatial resolution was 0.7 × 0.7 × 2 mm, TR/TE/dTE = 20.0/2.3/2.3 ms and BW = 541 Hz/pixel. Complex images were acquired and fed into a two-step processing pipeline: the first includes phase unwrapping and background phase removal using Laplacian operator (Wei et al. 2013). The second step applies a specific phase mask on the resulting tissue phase from the first step to provide the desired positive contrast of the seeds and to, potentially, differentiate them from the calcifications.Results:The phase-processing was performed in less than 30 seconds. The proposed method has successfully resulted in a positive contrast of the brachytherapy seeds. Additionally, the final processed phase image showed difference between the appearance of seeds and calcifications. However, the shape of the seeds was slightly distorted compared to the original dimensions.Conclusion:It is feasible to provide a positive contrast of the seeds from MR images using Laplacian operator-based phase processing." @default.
- W2471567768 created "2016-07-22" @default.
- W2471567768 creator A5001891235 @default.
- W2471567768 creator A5010337409 @default.
- W2471567768 creator A5042921990 @default.
- W2471567768 creator A5049782124 @default.
- W2471567768 creator A5062402781 @default.
- W2471567768 creator A5087063355 @default.
- W2471567768 date "2016-06-01" @default.
- W2471567768 modified "2023-09-25" @default.
- W2471567768 title "SU-F-I-19: MRI Positive Contrast Visualization of Prostate Brachytherapy Seeds Using An Integrated Laplacian-Based Phase Processing" @default.
- W2471567768 doi "https://doi.org/10.1118/1.4955847" @default.
- W2471567768 hasPublicationYear "2016" @default.
- W2471567768 type Work @default.
- W2471567768 sameAs 2471567768 @default.
- W2471567768 citedByCount "0" @default.
- W2471567768 crossrefType "journal-article" @default.
- W2471567768 hasAuthorship W2471567768A5001891235 @default.
- W2471567768 hasAuthorship W2471567768A5010337409 @default.
- W2471567768 hasAuthorship W2471567768A5042921990 @default.
- W2471567768 hasAuthorship W2471567768A5049782124 @default.
- W2471567768 hasAuthorship W2471567768A5062402781 @default.
- W2471567768 hasAuthorship W2471567768A5087063355 @default.
- W2471567768 hasConcept C104293457 @default.
- W2471567768 hasConcept C126838900 @default.
- W2471567768 hasConcept C136229726 @default.
- W2471567768 hasConcept C154945302 @default.
- W2471567768 hasConcept C192562407 @default.
- W2471567768 hasConcept C205372480 @default.
- W2471567768 hasConcept C2776502983 @default.
- W2471567768 hasConcept C2777416452 @default.
- W2471567768 hasConcept C2989005 @default.
- W2471567768 hasConcept C36464697 @default.
- W2471567768 hasConcept C41008148 @default.
- W2471567768 hasConcept C509974204 @default.
- W2471567768 hasConcept C71924100 @default.
- W2471567768 hasConceptScore W2471567768C104293457 @default.
- W2471567768 hasConceptScore W2471567768C126838900 @default.
- W2471567768 hasConceptScore W2471567768C136229726 @default.
- W2471567768 hasConceptScore W2471567768C154945302 @default.
- W2471567768 hasConceptScore W2471567768C192562407 @default.
- W2471567768 hasConceptScore W2471567768C205372480 @default.
- W2471567768 hasConceptScore W2471567768C2776502983 @default.
- W2471567768 hasConceptScore W2471567768C2777416452 @default.
- W2471567768 hasConceptScore W2471567768C2989005 @default.
- W2471567768 hasConceptScore W2471567768C36464697 @default.
- W2471567768 hasConceptScore W2471567768C41008148 @default.
- W2471567768 hasConceptScore W2471567768C509974204 @default.
- W2471567768 hasConceptScore W2471567768C71924100 @default.
- W2471567768 hasLocation W24715677681 @default.
- W2471567768 hasOpenAccess W2471567768 @default.
- W2471567768 hasPrimaryLocation W24715677681 @default.
- W2471567768 hasRelatedWork W1006573767 @default.
- W2471567768 hasRelatedWork W1861755743 @default.
- W2471567768 hasRelatedWork W1998807378 @default.
- W2471567768 hasRelatedWork W2000402406 @default.
- W2471567768 hasRelatedWork W2001690563 @default.
- W2471567768 hasRelatedWork W2018689670 @default.
- W2471567768 hasRelatedWork W2063632089 @default.
- W2471567768 hasRelatedWork W2080859217 @default.
- W2471567768 hasRelatedWork W2170441073 @default.
- W2471567768 hasRelatedWork W2465911068 @default.
- W2471567768 hasRelatedWork W2604424995 @default.
- W2471567768 hasRelatedWork W2793237280 @default.
- W2471567768 hasRelatedWork W2895694520 @default.
- W2471567768 hasRelatedWork W2946120025 @default.
- W2471567768 hasRelatedWork W2995525367 @default.
- W2471567768 hasRelatedWork W3004982364 @default.
- W2471567768 hasRelatedWork W3012168936 @default.
- W2471567768 hasRelatedWork W3036089771 @default.
- W2471567768 hasRelatedWork W3045503387 @default.
- W2471567768 hasRelatedWork W1946186905 @default.
- W2471567768 isParatext "false" @default.
- W2471567768 isRetracted "false" @default.
- W2471567768 magId "2471567768" @default.
- W2471567768 workType "article" @default.