Portland Has a Stroke Problem Most Residents Don't Know About
Portland is the most densely populated city in Maine. With roughly 68,000 residents packed into just over 21 square miles, it is also home to a disproportionate share of the state's aging population — people living with the very risk factors that make ischemic stroke one of the leading causes of death and long-term disability in the United States. Carotid artery disease is responsible for an estimated 20 to 25 percent of all ischemic strokes, and the majority of those strokes arrive without any prior warning symptoms.
The carotid arteries are the two major blood vessels running along either side of your neck. They carry oxygenated blood directly from the heart to the brain. When plaque — composed of cholesterol, calcium, and fibrous tissue — accumulates along the inner walls of these arteries, the condition is called carotid artery stenosis. As narrowing progresses, the risk of a clot forming or breaking loose and traveling to the brain increases substantially. The result is a stroke — and the damage is often permanent.
Who in Portland Should Consider Carotid Screening
Carotid artery disease develops silently over years or decades. By the time symptoms appear — transient vision loss, slurred speech, numbness on one side of the body — the disease has already reached a dangerous stage. Screening is about catching it before that moment arrives. If you live in the Greater Portland area and any of the following apply to you, a carotid duplex ultrasound is worth serious consideration:
- ›Age 55 or older — the prevalence of significant carotid stenosis rises sharply after 55
- ›High blood pressure — chronic hypertension accelerates plaque formation in the carotid arteries
- ›High cholesterol — elevated LDL is a primary driver of atherosclerotic plaque
- ›Current or former smoker — smoking damages arterial walls and promotes plaque buildup
- ›Diabetes — significantly increases the rate of vascular disease throughout the body
- ›Family history of stroke or cardiovascular disease — genetic predisposition matters
- ›Known peripheral artery disease or coronary artery disease — atherosclerosis is a systemic condition
Portland's population skews older than the national average, and Maine consistently ranks among the oldest states by median age. These demographics translate directly into higher stroke risk — yet until now, there has been no independent mobile carotid duplex option serving the Greater Portland area. Hospital-based imaging requires a physician referral, scheduling through a radiology department, and often a wait of several weeks.
BlackPoint Brings Carotid Screening to Your Door
BlackPoint Diagnostics fills that gap. We are the only independent mobile vascular imaging service in Southern Maine offering carotid duplex ultrasound directly at your home, workplace, or preferred location. No referral required. No waiting room. No hospital scheduling department. You book online, we arrive at your door with hospital-grade portable ultrasound equipment, and you receive cardiologist-reviewed results within 24 to 48 hours.
Every screening is performed personally by an ARDMS-certified sonographer with 20 years of cardiovascular imaging experience. This is not a van staffed by rotating technicians — it is a concierge diagnostic service built on clinical expertise and individual attention.
What the Carotid Duplex Exam Reveals
A carotid duplex ultrasound combines two modes of imaging — B-mode (grayscale anatomical imaging) and Doppler (blood flow velocity measurement) — to produce a comprehensive evaluation of your carotid arteries. During the exam, I assess several critical findings that determine your stroke risk profile:
- ›Plaque presence and morphology — not just whether plaque exists, but whether it is calcified and stable or soft and vulnerable to rupture
- ›Degree of stenosis — how much the artery has narrowed, measured by both diameter reduction and blood flow velocities
- ›Intima-media thickness (IMT) — an early marker of atherosclerosis that can indicate increased cardiovascular risk before significant narrowing develops
- ›Flow dynamics — turbulent or abnormal blood flow patterns that signal hemodynamically significant disease
- ›Vertebral artery assessment — evaluation of posterior circulation contributing to brain blood supply
The entire study takes approximately 30 to 45 minutes. You'll be seated or lying comfortably. I apply ultrasound gel to both sides of your neck and use a high-frequency transducer to image the common carotid artery, internal carotid artery, external carotid artery, and vertebral arteries bilaterally. There is no radiation, no contrast dye, no needles, and no discomfort. No special preparation is required — you can eat, drink, and take your medications as normal before the exam.
Cardiologist-Reviewed Results in 24–48 Hours
After your screening, the full study is reviewed and interpreted by a board-certified cardiologist. You receive a written report within 24 to 48 hours that clearly explains the findings — including the degree of stenosis on each side, plaque characterization, and any recommended next steps. If significant disease is identified, the report includes guidance on follow-up with your primary care physician or a vascular specialist. Understanding your stroke risk early gives you and your physician the information needed to act — whether that means lifestyle changes, medication adjustments, or closer surveillance. As we discuss in our guide on stroke prevention and warning signs, the window for intervention is far wider when disease is caught before a clinical event.
$397 Flat — No Referral, No Hidden Fees
The cost of a carotid duplex ultrasound with BlackPoint Diagnostics is $397 — a single flat rate that includes the sonographer visit, the complete diagnostic study, and the board-certified cardiologist interpretation. There are no facility fees, no surprise charges, and no insurance pre-authorization hoops. You pay one price and receive hospital-grade imaging at home. For more detail on what the carotid duplex exam involves and how it compares to other screening options, read our in-depth article on carotid ultrasound in Maine.
Service Area: Greater Portland and Surrounding Communities
We serve Portland and the surrounding communities including South Portland, Westbrook, Cape Elizabeth, Scarborough, and Falmouth. Whether you live on the peninsula, in the West End, Deering Center, or across the Casco Bay Bridge in South Portland, we come to you. Evening and weekend appointments are available to accommodate your schedule.
Questions before booking? Call or text (207) 409-7797. We are happy to discuss whether a carotid screening is appropriate for your situation.