{"title":"A Novel Imaging Analysis Method for Capturing Pharyngeal Constriction During Swallowing","authors":"R. Schwertner, K. Garand, W. Pearson","doi":"10.15436/2381-0793.16.974","DOIUrl":"https://doi.org/10.15436/2381-0793.16.974","url":null,"abstract":"Videofluoroscopic imaging of swallowing known as the Modified Barium Study (MBS) is the standard of care for assessing swallowing difficulty. While the clinical purpose of this radiographic imaging is to primarily assess aspiration risk, valuable biomechanical data is embedded in these studies. Computational analysis of swallowing mechanics (CASM) is an established research methodology for assessing multiple interactions of swallowing mechanics based on coordinates mapping muscle function including hyolaryngeal movement, pharyngeal shortening, tongue base retraction, and extension of the head and neck, however coordinates characterizing pharyngeal constriction is undeveloped. The aim of this study was to establish a method for locating the superior and middle pharyngeal constrictors using hard landmarks as guides on MBS videofluoroscopic imaging, and to test the reliability of this new method. Twenty de-identified, normal, MBS videos were randomly selected from a database. Two raters annotated landmarks for the superior and middle pharyngeal constrictors frame-by-frame using a semi-automated MATLAB tracker tool at two time points. Intraclass correlation coefficients were used to assess test-retest reliability between two raters with an ICC = 0.99 or greater for all coordinates for the retest measurement. MorphoJ integrated software was used to perform a discriminate function analysis to visualize how all 12 coordinates interact with each other in normal swallowing. The addition of the superior and middle pharyngeal constrictor coordinates to CASM allows for a robust analysis of the multiple components of swallowing mechanics interacting with a wide range of variables in both patient specific and cohort studies derived from common use imaging data.","PeriodicalId":16076,"journal":{"name":"Journal of imaging science","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78182361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ryan W Schwertner, Kendrea L Garand, William G Pearson
{"title":"A Novel Imaging Analysis Method for Capturing Pharyngeal Constriction During Swallowing.","authors":"Ryan W Schwertner, Kendrea L Garand, William G Pearson","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Videofluoroscopic imaging of swallowing known as the Modified Barium Study (MBS) is the standard of care for assessing swallowing difficulty. While the clinical purpose of this radiographic imaging is to primarily assess aspiration risk, valuable biomechanical data is embedded in these studies. Computational analysis of swallowing mechanics (CASM) is an established research methodology for assessing multiple interactions of swallowing mechanics based on coordinates mapping muscle function including hyolaryngeal movement, pharyngeal shortening, tongue base retraction, and extension of the head and neck, however coordinates characterizing pharyngeal constriction is undeveloped. The aim of this study was to establish a method for locating the superior and middle pharyngeal constrictors using hard landmarks as guides on MBS videofluoroscopic imaging, and to test the reliability of this new method. Twenty de-identified, normal, MBS videos were randomly selected from a database. Two raters annotated landmarks for the superior and middle pharyngeal constrictors frame-by-frame using a semi-automated MATLAB tracker tool at two time points. Intraclass correlation coefficients were used to assess test-retest reliability between two raters with an ICC = 0.99 or greater for all coordinates for the retest measurement. MorphoJ integrated software was used to perform a discriminate function analysis to visualize how all 12 coordinates interact with each other in normal swallowing. The addition of the superior and middle pharyngeal constrictor coordinates to CASM allows for a robust analysis of the multiple components of swallowing mechanics interacting with a wide range of variables in both patient specific and cohort studies derived from common use imaging data.</p>","PeriodicalId":16076,"journal":{"name":"Journal of imaging science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5321622/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34766409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Methods for multi-layer color printing and decorative inks for ultra-violet fine art inkjet","authors":"C. Parraman","doi":"10.2352/J.ImagingSci.Technol.2013.57.4.040503","DOIUrl":"https://doi.org/10.2352/J.ImagingSci.Technol.2013.57.4.040503","url":null,"abstract":"As more robust methods for UV cure inkjet printing are being introduced to market, alternative colour and decorative printing methods have been tested for the art, design and print sector. In order to increase density of colour, and improve ink coverage when printing onto a range of non-standard substrates, this paper describes results relating to the appearance of print on different surfaces, which includes both measured data (densitometry, gamut volume, ICC profiles) and a visual analysis (subjective assessment, micro-photography). The objective is to address the requirements of the user, to accurately print a specific colour through the multi-layering of inks, and to present methods of soft previewing the appearance of a multi-pass printed colour. A series of case studies are presented that incorporate recent research into \u0000the capabilities of UV (ultra-violet) curing technology - which has increased opportunities for the designer to print onto non-standard materials.","PeriodicalId":16076,"journal":{"name":"Journal of imaging science","volume":"4 1","pages":"1-13"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90283995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Three-dimensional printed ceramics for concept modelling and bespoke production","authors":"D. Huson","doi":"10.2352/J.IMAGINGSCI.TECHNOL.2013.57.4.040401","DOIUrl":"https://doi.org/10.2352/J.IMAGINGSCI.TECHNOL.2013.57.4.040401","url":null,"abstract":"Many ceramic manufacturing companies use 3D CAD software and 3D printing technologies to produce design concept models for evaluation, although the value to the design process is limited due to the type of materials that can be printed, conventional modelling and processing methods still need to be used to achieve a design concept model in a real material. \u0000A solution is desired that delivers a prototype that looks and feels like the final product and which can be fully tested for functionality glaze and decoration. \u0000In collaboration with Denby Pottery as the industrial partner this research project has refined and enhanced the 3D ceramic printing process already developed at the University of the West of England, and has enabled the production of concept models of new design ideas in a real ceramic material, printed directly from CAD data, fired, glazed and decorated.","PeriodicalId":16076,"journal":{"name":"Journal of imaging science","volume":"270 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77813197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}