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相关概念视频

Aneurysm I: Introduction01:30

Aneurysm I: Introduction

658
An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
658
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

592
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

478
Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
478

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相关实验视频

Updated: May 5, 2026

Manufacturing Abdominal Aorta Hydrogel Tissue-Mimicking Phantoms for Ultrasound Elastography Validation
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计算流体动力学和形状分析增强动脉瘤破裂风险分层.

Ivan Benemerito1,2, Frederick Ewbank3, Andrew Narracott4,5

  • 1INSIGNEO Institute for in Silico Medicine, University of Sheffield, Sheffield, UK. i.benemerito@sheffield.ac.uk.

International journal of computer assisted radiology and surgery
|November 17, 2024
PubMed
概括

将计算流体动力学和形状分析与PHASES评分相结合,可显著改善未破裂内动脉瘤 (UIA) 破裂风险的预测. 这提高了指导治疗决策的分类准确性.

关键词:
动脉瘤是一个动脉瘤.流体动力学 流体动力学后勤回归的逻辑回归阶段 阶段 阶段风险因素 风险因素形状的形状 形状的形状

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Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery
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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
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科学领域:

  • 神经外科 神经外科
  • 医疗成像医学成像
  • 生物医学工程 生物医学工程

背景情况:

  • 准确量化未破裂的内动脉瘤 (UIA) 破裂风险对于治疗决策至关重要.
  • 虽然计算流体动力学 (CFD) 和形态测量在破裂和未破裂动脉瘤之间有所不同,但它们对临床数据的附加值尚不清楚.
  • 这项研究旨在确定图像衍生特征是否增强了用于分类动脉瘤破裂状态的已建立的PHASES评分.

研究的目的:

  • 调查将CFD和形状分析中的图像衍生特征纳入PHASES分数的有效性.
  • 为了提高动脉瘤破裂状态的分类准确性.
  • 评估先进的成像技术的附加值,而不是常规的临床观察.

主要方法:

  • 分析了170名患者 (78名破裂) 的横截面数据集.
  • 在CFD和形状分析中提取了额外的特征,这些特征与PHASES变量相结合.
  • 通过交叉验证开发和验证了五种后勤回归模型,通过AUC测量性能.

主要成果:

  • 仅仅PHASES评分就产生了0.63.6的AUC.
  • 结合CFD和形状分析特征的模型实现了0.71.7的AUC改善.
  • 非球形度指数和最大振荡切割指数被确定为破裂的关键预测因素.

结论:

  • 将基于图像的CFD和形状分析与临床数据相结合,显著提高了动脉瘤破裂分类的准确性.
  • 这些发现突出了先进的成像技术的潜力,以改进UIAs的风险评估.
  • 建议对纵向数据进行进一步的研究,以评估临床整合.