摘要翻译:
肺通气量测量是诊断肺部疾病最可靠的技术之一。近年来,基于多重活动轮廓演化的自动技术改进了传统的超极化H${}^{3}$HE和${}^{1}$H磁共振成像方法,该方法耗时长且容易产生偏差。映射结果从一个等效的热力学模型,这里我们分析的基本动力学编排活动轮廓(AC)方法。我们证明了这种数值方法与经典类核动力学的普遍标度行为有着内在的联系。指数值与理论模型的良好比较进一步证明了我们的主张。
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英文标题:
《Universality in the merging dynamics of parametric active contours: a
study in MRI-based lung segmentation》
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作者:
Amit K. Chattopadhyay, Nilanjan Ray and Scott T. Acton
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最新提交年份:
2003
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分类信息:
一级分类:Physics 物理学
二级分类:Soft Condensed Matter 软凝聚态物质
分类描述:Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜,聚合物,液晶,玻璃,胶体,颗粒物质
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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一级分类:Quantitative Biology 数量生物学
二级分类:Other Quantitative Biology 其他定量生物学
分类描述:Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
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英文摘要:
Measurement of lung ventilation is one of the most reliable techniques of diagnosing pulmonary diseases. The time consuming and bias prone traditional methods using hyperpolarized H${}^{3}$He and ${}^{1}$H magnetic resonance imageries have recently been improved by an automated technique based on multiple active contour evolution. Mapping results from an equivalent thermodynamic model, here we analyse the fundamental dynamics orchestrating the active contour (AC) method. We show that the numerical method is inherently connected to the universal scaling behavior of a classical nucleation-like dynamics. The favorable comparison of the exponent values with the theoretical model render further credentials to our claim.
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PDF链接:
https://arxiv.org/pdf/cond-mat/0309336