Ultrasonic Perfusion Imaging of Peripheral Vascular Disease
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- Mayo Clinic
- 入组人数
- 87
- 试验地点
- 1
- 主要终点
- Aim 1: Determine the efficacy of ultrasonic perfusion imaging for early detection of PAD. The goal is to quantify the perfusion of cuff muscle in patients with lower leg claudication and compare the results to those obtained in healthy individuals
研究概览
简要总结
The purpose of this study is to evaluate the potential of ultrasound perfusion imaging technique for assessing the progression of peripheral arterial disease (PAD) and monitoring its response to therapy by measuring changes in microvessel alterations and perfusion variations.
详细描述
The clinical manifestations of peripheral arterial disease (PAD), regardless of etiology, are due to a lack of blood flow to the musculature relative to its metabolism, which results in pain in the affected muscle groups. PAD affecting the lower extremities causes claudication, cramping pain in the calf muscle, thigh or hip muscle induced by exercise. The initial test for evaluation of patients with claudication is ankle brachial index (ABI).
Therefore, a non-invasive and affordable US technique that can quantify blood perfusion and microvasculature density, without using contrast agent, will improve PAD detection in early stage and can monitor the disease progress as well as the treatment response. The investigators anticipate that our new cost-effective and non-invasive ultrasound perfusion technique offers a quantitative imaging of perfusion that would help separating PAD from non-PAD and monitor the disease progression and treatment response.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Male and female volunteers > 18 years old.
- •Male and female volunteers with symptom of claudication and suspected peripheral arterial disease (PAD) who are scheduled for vascular testing.
排除标准
- •Patients with gangrene.
- •Patients with lower leg amputation.
- •Having ulcer and any health condition that does not allow proper use of ultrasound scanning.
- •People considered in "vulnerable" populations.
结局指标
主要结局
Aim 1: Determine the efficacy of ultrasonic perfusion imaging for early detection of PAD. The goal is to quantify the perfusion of cuff muscle in patients with lower leg claudication and compare the results to those obtained in healthy individuals
时间窗: 4 yeas
Perfusion density of the cuff muscle will be quantified by the new automatic ultrasound microvessel quantification technique and the resulting measurements will measure the outcome of this part of the study.
次要结局
- Aim 2: Determine the efficacy of ultrasonic perfusion imaging for assessment of treatment response in PAD patients. The goal is to quantify the perfusion of the cuff muscle in PAD patients in 3 time points, 6 months, and every year after treatment.(5 years)