Evaluating visual perception for assessing reconstructed flap health.
Evaluating visual perception for assessing reconstructed flap health.
复制标题
评估视觉感知以评估重建皮瓣的健康状况。
DOI：
10.1016/j.jss.2015.03.099
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Durkin,AnthonyJ
中科院分区：
文献类型：
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作者：
Ponticorvo,Adrien;Taydas,Eren;Mazhar,Amaan;Ellstrom,ChristopherL;Rimler,Jonathan;Scholz,Thomas;Tong,June;Evans,GregoryRD;Cuccia,DavidJ;Durkin,AnthonyJ
背景在组织瓣出现临床症状之前检测出组织瓣的衰竭，有可能提高术后皮瓣的处理和挽救率。本研究展示了一种模型，以定量比较临床表现，作为recordedvia数码相机，与空间频域成像（SFDI），一种非侵入性成像技术，使用图案照明，以产生图像的总血红蛋白和组织氧饱和度（stO2）。在每个皮瓣的动脉或静脉中，通过量减少了基线值的25%、50%、75%和100%。量化由数码相机记录的颜色变化，以预测人眼可见的遮挡水平。SFDI也被用来量化的生理参数，包括总血红蛋白和氧饱和度与每个occlusion.ResultsThere相关的变化没有统计学显着的变化，颜色以上的明显感知水平与人类的视觉在任何闭塞水平。然而，有统计学意义上的显着变化，总血红蛋白和stO2水平检测在50%，75%，和100%闭塞水平的动脉和静脉occlusions.ConclusionsAs证明的彩色成像数据，视觉皮瓣的变化是很难检测到，直到显着闭塞已经发生。SFDI能够在感知到部分闭塞之前检测到总血红蛋白和stO2的变化，从而可能改善响应时间和挽救率。
BackgroundDetecting failing tissue flaps before they are clinically apparent has the potential to improve postoperative flap management and salvage rates. This study demonstrates a model to quantitatively compare clinical appearance, as recordedviadigital camera, with spatial frequency domain imaging (SFDI), a noninvasive imaging technique using patterned illumination to generate images of total hemoglobin and tissue oxygen saturation (stO2).MethodsUsing a swine pedicle model in which blood flow was carefully controlled with occlusion cuffs and monitored with ultrasound probes, throughput was reduced by 25%, 50%, 75%, and 100% of baseline values in either the artery or the vein of each of the flaps. The color changes recorded by a digital camera were quantified to predict which occlusion levels were visible to the human eye. SFDI was also used to quantify the changes in physiological parameters including total hemoglobin and oxygen saturation associated with each occlusion.ResultsThere were no statistically significant changes in color above the noticeable perception levels associated with human vision during any of the occlusion levels. However, there were statistically significant changes in total hemoglobin and stO2levels detected at the 50%, 75%, and 100% occlusion levels for arterial and venous occlusions.ConclusionsAs demonstrated by the color imaging data, visual flap changes are difficult to detect until significant occlusion has occurred. SFDI is capable of detecting changes in total hemoglobin and stO2as a result of partial occlusions before they are perceivable, thereby potentially improving response times and salvage rates.