Find a CREST-2 Site near you:

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Want to Know More?

To view a video description of the CREST-2 study by Donald Heck, MD click the play arrow on the image above.

• ​​​​About the 3 Treatment Methods
• What to Expect If You Enroll in CREST-2
• Frequently Asked Questions 

Take the Eligibility Questionnaire
by Clicking the Button Below

CREST-2 Eligibility Questionnaire

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Who May Participate in CREST-2?

Adult men and women who are:

• Age 35 years and older
• Have high-grade narrowing of at least one of their carotid arteries
• Lack serious other medical complications.
  

​How Do You Know if Your Arteries are Blocked?

Two tests may be performed by your physician to determine if you have narrowing in your carotid arteries:

• Cerebral angiography uses contrast material injected into an artery (usually in the groin) to make the vessels in the head and neck visible in x-rays. (Scroll over Figure 1 below.) Pictures are then taken and the amount of narrowing is measured. 
• Ultrasound, or carotid Doppler, uses sound waves to measure the rate of blood flow through the artery. (Scroll over Figure 2 below.) If you have not had an ultrasound within the last 30 days and you decide to participate, you will have this test. 

FIG. 1. Cerebral Angiography creates an x-ray image of blood vessels in the head and neck.

FIG. 2. Ultrasound, or carotid Doppler, uses sound waves to measure the rate of flow through your carotid arteries.

Figure 1

Figure 2