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基于视觉显著性与霍夫森林的腰椎间盘定位与分割
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作者 陈东岳 周婷 赵丹 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2013年第9期1368-1374,共7页
为了对腰椎疾病的计算机辅助诊断提供腰椎间盘的具体位置和形状信息,提出一种基于CT图像的腰椎间盘定位与分割算法.首先针对腰椎CT图像中骨骼干扰较多、背景纹理复杂的特点,使用小波分解获得局部特征,并引入独立元分析方法将高维特征空... 为了对腰椎疾病的计算机辅助诊断提供腰椎间盘的具体位置和形状信息,提出一种基于CT图像的腰椎间盘定位与分割算法.首先针对腰椎CT图像中骨骼干扰较多、背景纹理复杂的特点,使用小波分解获得局部特征,并引入独立元分析方法将高维特征空间分解为相互独立的多个一维特征空间,提出基于视觉显著性检测的腰椎间盘区域预选取算法,实现了小波特征的概率密度估计,并生成了腰椎间盘显著性分布图;然后提出基于显著性分布与方向信息测度相融合的局部样本随机提取算法,同时设计了面向稀疏特征的弱分类器来提高随机森林的分类准确性,从而实现腰椎间盘区域的精确定位与分割.实验结果证明,该算法能够有效地提高腰椎间盘检测的准确率与计算速度. 展开更多
关键词 腰椎间盘检测 霍夫森林 显著性检测 方向信息测度 图像分割
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Colorimetric detection and efficient monitoring of a potential biomarker of lumbar disc herniation using carbon nanotube-based probe 被引量:1
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作者 Yufeng Huang Ju Liu +6 位作者 Min Zou Qingzhi Zhang Jie Chao Weidong Zhao Desheng Wu Shao Su Lianhui Wang 《Science China Chemistry》 SCIE EI CAS CSCD 2016年第4期493-496,共4页
Herein, a multiwalled carbon nanotubes(MWNT)-based colorimetric probe was designed to discover and monitor the level of apolipoprotein-L1(Apo L1) in lumbar disc herniation(LDH) patients. Apo L1 could be easily found i... Herein, a multiwalled carbon nanotubes(MWNT)-based colorimetric probe was designed to discover and monitor the level of apolipoprotein-L1(Apo L1) in lumbar disc herniation(LDH) patients. Apo L1 could be easily found in human serum of the LDH group, but not obviously expressed in the normal control group(Ctrl), spine spondylolisthesis(SSP) group, spinal fracture(SFR) group, and spine scoliosis(SSC) group. Furthermore, the as-prepared MWNT-based probe was also used to track the recovery of LDH patients who have successful surgery operation. The P value of early diagnosis and recovery monitoring was <0.001 and >0.05 for the proposed method and a conventional enzyme-linked immunosorbent assay(ELISA), respectively, suggesting this detection strategy had significant differences compared with the traditional ELISA. All experimental results showed that Apo L1 might be a potential biomarker for early diagnosis of LDH. This proposed detection strategy has a potential application in discovering new biomarkers of diseases. 展开更多
关键词 colorimetric probe apolipoprotein-L1 early diagnosis recovery monitoring
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