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			| Angiogram of the carotid arteryCourtesy of Intermountain Medical Imaging, Boise,
		Idaho.  Figure 1 shows an angiogram (a type of X-ray) of a normal neck artery
		(carotid artery) with smooth walls. Figure 2 shows a narrowed carotid artery
		with ulcerated plaque (the surface of the plaque is irregular and broken) that
		is the source of clots. If clots travel to the brain and block blood flow, they can cause a TIA or stroke.ByHealthwise StaffPrimary Medical ReviewerE. Gregory Thompson, MD - Internal Medicine
 Adam Husney, MD - Family Medicine
 Martin J. Gabica, MD - Family Medicine
 Specialist Medical ReviewerHoward Schaff, MD - Diagnostic Radiology
Current as ofMarch 20, 2017Current as of:
                March 20, 2017Author:
          Healthwise Staff  Medical Review:
          E. Gregory Thompson, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine & Howard Schaff, MD - Diagnostic Radiology |  |  |  |  |  |