Informatics in radiology: dual-energy electronic cleansing for fecal-tagging CT colonography.
Informatics in radiology: dual-energy electronic cleansing for fecal-tagging CT colonography.
复制标题
放射学信息学：用于粪便标记 CT 结肠成像的双能电子清洁。
作者：
W. Cai;Se Hyung Kim;June;H. Yoshida
电子清洗（EC）是一种新兴的技术，用于在粪便标记计算机断层扫描（CT）结肠成像中去除标记的粪便物质。然而，现有的EC方法可能会产生各种类型的伪影，严重损害清洁的CT结肠图像的质量。双能量粪便标记CT结肠成像被认为是下一代成像方式。利用双能粪便标记CT结肠成像的EC有望通过应用双能CT的材料分解能力有效减少清洁伪影。双能量指数（DEI），这是计算的材料在两个不同的光子能量的衰减值的相对变化，是一个可靠的和有效的指标，用于区分标记的粪便物质从各种类型的组织粪便标记CT结肠成像。基于DEI的双能量EC方案使用DEI来帮助区分结肠腔-包括腔空气、标记的粪便物质和空气标记混合物-与结肠软组织结构，然后分割整个结肠腔以清洁标记的粪便物质。因此，双能EC可以帮助识别空气标记混合物中的部分体积效应和残留粪便物质中的不均匀标记，这是EC伪影的主要原因。这种技术有可能显着提高EC的质量，并承诺提供一个清洁的结肠，是免费的文物通常与传统的单能量EC方法观察到的图像。
Electronic cleansing (EC) is an emerging technique for the removal of tagged fecal materials at fecal-tagging computed tomographic (CT) colonography. However, existing EC methods may generate various types of artifacts that severely impair the quality of the cleansed CT colonographic images. Dual-energy fecal-tagging CT colonography is regarded as a next-generation imaging modality. EC that makes use of dual-energy fecal-tagging CT colonographic images promises to be effective in reducing cleansing artifacts by means of applying the material decomposition capability of dual-energy CT. The dual-energy index (DEI), which is calculated from the relative change in the attenuation values of a material at two different photon energies, is a reliable and effective indicator for differentiating tagged fecal materials from various types of tissues on fecal-tagging CT colonographic images. A DEI-based dual-energy EC scheme uses the DEI to help differentiate the colonic lumen-including the luminal air, tagged fecal materials, and air-tagging mixture-from the colonic soft-tissue structures, and then segments the entire colonic lumen for cleansing of the tagged fecal materials. As a result, dual-energy EC can help identify partial-volume effects in the air-tagging mixture and inhomogeneous tagging in residual fecal materials, the major causes of EC artifacts. This technique has the potential to significantly improve the quality of EC and promises to provide images of a cleansed colon that are free of the artifacts commonly observed with conventional single-energy EC methods.
DOI：
10.1056/nejmoa0800996
发表时间：
2008-09-18
期刊：
The New England journal of medicine
影响因子：
--
作者：
Johnson CD;Chen MH;Toledano AY;Heiken JP;Dachman A;Kuo MD;Menias CO;Siewert B;Cheema JI;Obregon RG;Fidler JL;Zimmerman P;Horton KM;Coakley K;Iyer RB;Hara AK;Halvorsen RA Jr;Casola G;Yee J;Herman BA;Burgart LJ;Limburg PJ
通讯作者：
Limburg PJ
放射学信息学：非导泻 CT 结肠成像的电子清洁：结构分析方案。
DOI：
10.1148/rg.303095154
发表时间：
2010
期刊：
Radiographics : a review publication of the Radiological Society of North America, Inc
影响因子：
--
作者：
Cai,Wenli;Yoshida,Hiroyuki;Zalis,MichaelE;Näppi,JanneJohannes;Harris,GordonJ
通讯作者：
Harris,GordonJ