相关实验视频

Updated: Jun 19, 2026

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

Published on: November 28, 2018

定量计算机断层扫描血管学用于评估大动脉狭窄症中膜纤维缩体积

Maria Lembo¹, Shruti S Joshi², Jolien Geers³

¹Department of Advanced Biomedical Sciences, Federico II University of Naples, Naples, Italy.

JACC. Cardiovascular imaging

|August 8, 2024

概括

使用计算机断层扫描血管造影 (CTA) 来量化大动脉纤维形体积,可以准确地评估大动脉狭窄 (AS) 的严重程度. 这种方法可靠地跟踪疾病进展,并与AS患者的临床结果相关联.

科学领域:

心血管成像 - 心血管成像
放射学放射学是一门学科.
医学物理医学物理

背景情况:

大动脉狭窄 (AS) 涉及化和纤维化,这些过程难以与现有方法同时量化.
准确量化这些大动脉变化对于评估AS严重程度和进展至关重要.

研究的目的:

用计算机断层扫描 (CT) 来评估大动脉的纤维质量体积,用于AS患者的血管学.
评估这种CT衍生措施的可复制性,组织学相关性和与疾病严重程度的关联.
为了确定其预测和跟踪AS进展的能力.

主要方法:

计算机断层扫描 (CT) 血管造影用于计算136名AS患者的纤维度体积在基线和1年随访时.
高斯混合模型分析了CT衰减分布,以量化性,非性和纤维性体积.
扫描-重新扫描可复制性被评估,与组织学和外部队列相对验证.

主要成果:

纤维度体积测量是快速的 (5.8 ± 1.0 分钟/扫描) 并显示出优异的扫描-重新扫描可重复性.
基线纤维体积与男性和女性患者以及外部队列中的心声图平均梯度有显著的相关性.
纤维体积在一年内增加了17%,与平均梯度进展相关;基线体积强烈预测了未来的进展,特别是在女性中.

结论:

通过CT血管学测量的大动脉纤维形体积,可以准确地对AS严重程度进行解剖评估.
这种定量方法有效地跟踪疾病的进展,并与男性和女性患者的疾病严重程度和血液动力学进展相关.

关键词:

大动脉门狭窄症与对比度增强的CTCT相反.纤维形体积的体积斯混合物模型的模拟模型.

更多相关视频

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

Published on: December 9, 2021

Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement

Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement

Published on: January 20, 2022

相关概念视频

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...