Journal of imaging science最新文献

A Novel Imaging Analysis Method for Capturing Pharyngeal Constriction During Swallowing 一种捕捉吞咽过程中咽部收缩的新型成像分析方法

Journal of imaging science

Pub Date : 2016-08-25 DOI: 10.15436/2381-0793.16.974

R. Schwertner, K. Garand, W. Pearson

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.

被称为改良钡研究(MBS)的吞咽视频透视成像是评估吞咽困难的护理标准。虽然这种放射成像的临床目的主要是评估误吸风险，但这些研究中包含了有价值的生物力学数据。吞咽力学计算分析(Computational analysis of吞咽力学，CASM)是一种基于绘制肌肉功能坐标的研究方法，用于评估咽部运动、咽部缩短、舌根收缩、头颈部伸展等吞咽力学的多重相互作用，但表征咽部收缩的坐标尚未开发。本研究的目的是建立一种在MBS显像上以硬标志为导向定位咽上、中缩肌的方法，并检验这种新方法的可靠性。从数据库中随机选择20个去识别的、正常的MBS视频。两名评分员使用半自动MATLAB跟踪工具在两个时间点逐帧标注上咽收缩肌和中咽收缩肌的标志。类内相关系数用于评估两个评分者之间的重测信度，对于所有重测测量坐标，ICC = 0.99或更大。使用MorphoJ集成软件进行判别函数分析，以可视化所有12个坐标在正常吞咽时如何相互作用。在CASM中加入上咽收缩器和中咽收缩器坐标，可以对吞咽力学的多个组成部分进行强有力的分析，这些组成部分与来自常用成像数据的患者特异性和队列研究中的广泛变量相互作用。

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引用次数: 11

A Novel Imaging Analysis Method for Capturing Pharyngeal Constriction During Swallowing. 一种捕捉吞咽过程中咽部收缩的新型成像分析方法。

Journal of imaging science

Pub Date : 2016-01-01 Epub Date: 2016-08-25

Ryan W Schwertner, Kendrea L Garand, William G Pearson

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.

被称为改良钡研究(MBS)的吞咽视频透视成像是评估吞咽困难的护理标准。虽然这种放射成像的临床目的主要是评估误吸风险，但这些研究中包含了有价值的生物力学数据。吞咽力学计算分析(Computational analysis of吞咽力学，CASM)是一种基于绘制肌肉功能坐标的研究方法，用于评估咽部运动、咽部缩短、舌根收缩、头颈部伸展等吞咽力学的多重相互作用，但表征咽部收缩的坐标尚未开发。本研究的目的是建立一种在MBS显像上以硬标志为导向定位咽上、中缩肌的方法，并检验这种新方法的可靠性。从数据库中随机选择20个去识别的、正常的MBS视频。两名评分员使用半自动MATLAB跟踪工具在两个时间点逐帧标注上咽收缩肌和中咽收缩肌的标志。类内相关系数用于评估两个评分者之间的重测信度，对于所有重测测量坐标，ICC = 0.99或更大。使用MorphoJ集成软件进行判别函数分析，以可视化所有12个坐标在正常吞咽时如何相互作用。在CASM中加入上咽收缩器和中咽收缩器坐标，可以对吞咽力学的多个组成部分进行强有力的分析，这些组成部分与来自常用成像数据的患者特异性和队列研究中的广泛变量相互作用。

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引用次数: 0

Methods for multi-layer color printing and decorative inks for ultra-violet fine art inkjet 多层彩色印刷和装饰油墨的方法，用于紫外线美术喷墨

Journal of imaging science

Pub Date : 2013-07-01 DOI: 10.2352/J.ImagingSci.Technol.2013.57.4.040503

C. Parraman

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 the capabilities of UV (ultra-violet) curing technology - which has increased opportunities for the designer to print onto non-standard materials.

随着更强大的UV固化喷墨印刷方法被引入市场，艺术、设计和印刷部门已经测试了其他颜色和装饰印刷方法。为了增加色彩密度，并提高油墨覆盖范围，当印刷到一系列非标准基材上时，本文描述了与不同表面上的印刷品外观相关的结果，其中包括测量数据(密度测量，色域体积，ICC配置文件)和视觉分析(主观评估，显微摄影)。目的是满足用户的要求，通过多层油墨准确打印特定颜色，并提供软预览多道印刷颜色外观的方法。介绍了一系列案例研究，这些研究结合了最近对UV(紫外线)固化技术能力的研究，这增加了设计师在非标准材料上印刷的机会。

引用次数: 0

Three-dimensional printed ceramics for concept modelling and bespoke production 三维印刷陶瓷概念建模和定制生产

Journal of imaging science

Pub Date : 2013-07-01 DOI: 10.2352/J.IMAGINGSCI.TECHNOL.2013.57.4.040401

D. Huson

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. A 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. In 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.

许多陶瓷制造公司使用3D CAD软件和3D打印技术来制作设计概念模型进行评估，尽管由于可以打印的材料类型有限，对设计过程的价值有限，但仍然需要使用传统的建模和加工方法来实现真实材料中的设计概念模型。需要一个解决方案，提供一个原型，看起来和感觉像最终产品，可以全面测试的功能，釉和装饰。通过与Denby Pottery作为工业合作伙伴的合作，该研究项目改进并增强了西英格兰大学已经开发的3D陶瓷打印工艺，并使新设计理念的概念模型能够在真正的陶瓷材料上生产，直接从CAD数据打印，烧制，上釉和装饰。

引用次数: 2