Contrast Ultrasound Perfusion Imaging in Peripheral Arterial Disease (PAD)

Oregon Health and Science University18 enrolled

Overview

Contrast ultrasound is a technique that can quantify blood flow in the tissues of the body by ultrasound detection of microbubble contrast agents that behave in the circulation similar to red blood cells. In this study, the investigators hypothesize that contrast ultrasound of blood flow in the leg (thigh and calf) at rest and during stress produced by medications that mimic exercise (vasodilator stress) can provide information on the location and severity of peripheral vascular disease (blockages of the blood vessels in the leg). The investigators will also determine whether symptom improvement after revascularization (procedures to open up or bypass the blockages) is directly related to the improvement in blood flow.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Peripheral Arterial Disease

Eligibility

Sex: ALLMin age: 19 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: 1. Known or suspected PAD 2. Lower extremity angiography or MRA planned or performed within 6 months Exclusion Criteria: 1. Age \<19 y.o. 2. Pregnant or lactating females 3. Hypersensitivity to ultrasound contrast agent, dipyridamole, or regadenoson 4. Severe reactive airways disease 5. Evidence right-to-left shunt (identified on screening echo) 6. NYHA Class III or IV heart failure. 7. Planned amputation 8. Unstable coronary artery disease or severe aortic stenosis

Contrast Ultrasound Perfusion Imaging in Peripheral Arterial Disease (PAD)

Overview

Conditions

Eligibility

Locations (1)

Outcomes

Primary Outcomes