Meet your vein specialist
Dr. Syed Raza, MD
Vascular & Interventional Radiology · Founder, Premier Vein & Vascular Center
Fellowship-trained interventional radiologist certified by the American Board of Radiology and the Royal College of Radiologists (UK). Former Chief of Interventional Radiology at UTMB Galveston and Memorial Hermann Memorial City, with 15+ years treating varicose veins, venous reflux and peripheral arterial disease.
Varicose Veins Diagnosis in Houston, TX
Professional Varicose Veins Testing & Diagnosis
Premier Vein & Vascular Center provides professional varicose veins diagnosis services to patients in Houston, TX and throughout the surrounding areas. When someone suffers from a vascular condition or venous disorder, it is essential that they make routine appointments with a reliable medical professional. No matter how long it takes, we are dedicated to finding the right diagnosis or treatment for you. If you’re experiencing pain in your legs, swelling in your feet, discolored skin, or any other signs of poor vein health, you’ve come to the right place. Reach out to our team today to learn more.
Quick Answer: Yes. A venous duplex ultrasound is the standard test for diagnosing varicose veins and the venous insufficiency behind them. It shows which veins are enlarged, measures how long blood flows backward through each valve, and checks the deep veins for clots or old damage. It is painless, uses no radiation or needles, and usually takes 30 to 60 minutes. The scan both confirms the diagnosis and creates the map your vein specialist uses to choose the right treatment and, when needed, to document medical necessity for insurance.
How Do Ultrasounds for Varicose Veins Work?
When we use venous duplex ultrasound scanning, patients can expect three different steps. The first step is the “greyscale/B-mode ultrasound” scan, which is the standard ultrasound scan most commonly used on pregnant women. A gel is applied to the area and rolled on with a scanner. The second step of the process is the “Doppler ultrasound” scan. This scan is beamed into an area body and can also be inserted into the vein to measure blood flow in the vein. The final step in the process is the “color-flow”/”color-coded” element. This enables the vein specialist to view blood flow in a vein in real-time.
How Does a Vein Specialist Use Venous Ultrasound Results?
A vein specialist uses the result from a patient’s venous ultrasound to identify any damaged veins with faulty valves and to map the anatomy of those veins. The road map that is created from this imaging will allow your physicians to accurately assess the cause and extent of the varicose veins. From here, we will create the best vein treatment plan for your unique needs.
What to Expect During an Ultrasound Vein Scan
During an ultrasound vein scan, patients will be in a sitting position but may be asked to lie down. It is suggested that patients wear or bring shorts to the examination. For a portion of the examination, the patient will be asked to stand so the overseeing physician can check for leaky valves. This is done without probing, incisions, or injections. A warm gel will be applied to your legs so that the ultrasound device can gently glide over your skin. The ultrasound vein scan should take less than 30 minutes.
Who Should Perform Ultrasound Vein Mapping?
When it comes to ultrasound vein mapping and diagnosis, you should want someone with technical training, experience using the equipment for diagnosing varicose veins, and a high-quality duplex ultrasound scan machine. With this, you’ll be able to receive a correct diagnosis and treatment plan.
Contact Us Today for Varicose Vein Diagnosis
If you think you may be suffering from varicose veins, the professionals at Premier Vein & Vascular Center can help provide you with a diagnosis. Our professionals possess a wealth of knowledge in oncology procedures, dialysis fistula maintenance, venous access procedures, and more. If you’re looking for varicose vein treatment and symptom alleviation, look no further than our state-of-the-art facility in Houston. Contact us today to schedule a consultation at your earliest convenience.
Can Ultrasounds Diagnose Varicose Veins? What the Scan Actually Shows
A doctor can see a bulging varicose vein with the naked eye, so patients sometimes wonder why a scan is needed at all. The answer is that the visible vein is rarely the real problem. Most varicose veins are fed by a leaking vein deeper in the leg, often the great saphenous vein along the inner thigh or the small saphenous vein behind the calf. Those veins cannot be seen or felt reliably, and treating only what is visible usually leads to the varicose veins coming back.
A venous duplex ultrasound answers the questions an examination cannot:
- Which veins have valves that no longer close
- How severe the backward flow (reflux) is in each segment
- How wide the faulty veins are and how deep they lie under the skin
- Whether perforator veins connecting the surface and deep systems are leaking
- Whether the deep veins are open and healthy, or show a current clot or scarring from an old one
How Reflux Is Measured
The key measurement in a venous ultrasound is reflux time: how long blood flows the wrong way after the vein is squeezed and released. Healthy valves snap shut almost instantly. Faulty valves let blood fall back down the leg for longer.
To trigger the test, the sonographer squeezes your calf or asks you to bear down while the probe watches the vein. In line with current vascular guidelines, backward flow lasting longer than about half a second in the superficial and perforator veins, or longer than about one second in the main deep veins of the thigh and knee, is considered abnormal. The scan is done with you standing or sitting upright, because reflux can be missed when you lie flat and gravity is not pulling blood down the leg.
Ultrasound Findings and What They Mean
Your report may contain terms that are unfamiliar. The table below explains the most common findings in plain language.
| Finding on the report | What it means | What usually happens next |
|---|---|---|
| Great or small saphenous vein reflux | The main surface vein has failing valves and is feeding varicose veins | Often treated with ablation if symptoms are present |
| Incompetent perforator vein | A connecting vein lets high deep pressure reach the skin | May be treated, especially near skin damage or an ulcer |
| Tributary or accessory vein reflux | A branch vein is leaking and bulging | Phlebectomy or foam sclerotherapy |
| Deep vein reflux | Valves in the deep system are not working well | Compression; treatment plan adjusted |
| Acute deep vein thrombosis | A new clot in a deep vein | Prompt treatment with blood thinners |
| Chronic post-thrombotic changes | Scarring from an old clot | Long-term compression; further imaging if needed |
| Normal study | No significant reflux or clot found | Other causes of symptoms are considered |
When You Need a Vein Ultrasound
Not everyone with leg veins needs a scan. We usually recommend one when there are:
- Bulging varicose veins, with or without symptoms
- Aching, heaviness, cramps, itching or restless legs that worsen through the day
- Swelling of the ankles or lower legs
- Skin darkening, eczema or hardened skin around the ankle
- A current or healed leg ulcer
- Spider veins clustered around the ankle or returning after treatment
- Varicose veins that came back after previous treatment
- Plans for any vein procedure, since treatment should always follow the map
Small spider veins on the thighs with no symptoms can often be treated without an ultrasound.
Call 911 or seek emergency care if you notice:
- Sudden swelling, pain or tightness in one calf or thigh, which needs a same-day ultrasound to rule out a clot
- Chest pain, sudden shortness of breath or coughing up blood
- A hot, red, hard varicose vein with redness spreading toward the groin
- Bleeding from a varicose vein that does not stop with firm pressure and leg elevation
What a Venous Ultrasound Cannot Do
Duplex ultrasound is excellent for the leg veins, but it has limits, and a good vein practice knows when to use other tests.
- Pelvic and abdominal veins are deep and often hidden by bowel gas. When we suspect a narrowed iliac vein or pelvic vein reflux, further imaging such as MRI or CT venography may be needed.
- Arterial circulation is assessed separately. If pulses are weak, or a wound is present, an ankle-brachial index checks the arteries before compression or treatment.
- Symptoms from other causes, such as nerve problems, arthritis or lymphedema, will not show up as venous reflux. A normal scan helps steer the investigation elsewhere.
Ultrasound is also operator dependent. The quality of the result depends heavily on the skill of the person performing it and on following a full, standardized protocol, which is why accreditation matters.
Is a Vein Ultrasound Safe? Common Concerns
Ultrasound uses high-frequency sound waves, not X-rays, so there is no radiation exposure at all. That makes it safe to repeat as often as needed, for example before treatment, during a procedure and at follow-up visits. It is also the test used to check for leg clots during pregnancy.
Patients with limited mobility sometimes worry about standing during the scan. The sonographer can use a tilted table, a stool or short rest breaks, and much of the study can be done sitting with the leg lowered. Large legs, significant swelling or recent surgery can make imaging harder, but a careful, experienced sonographer can usually still obtain the measurements needed.
If you have had a clot, vein procedures or leg surgery in the past, an ultrasound is even more useful, because it shows how your veins look now rather than relying on old records. Comparing the new map with any earlier reports also shows whether the condition is stable or progressing.
How We Evaluate Varicose Veins at Premier Vein
- Focused history. We ask about your symptoms, how long you have had them, pregnancies, family history, past clots and any previous vein treatment.
- Standing examination. We examine both legs, note visible veins, swelling and skin changes, and check pulses.
- Venous duplex ultrasound. Performed in our IAC-accredited vascular lab using a full reflux protocol, with you upright, covering the superficial, perforator and deep veins. An ankle-brachial index is added when the arteries need checking.
- A clear plan. Dr. Syed Raza reviews the images, explains which veins are responsible and what is medical versus cosmetic, and outlines the treatment options that fit your map.
From Ultrasound Map to Treatment
Once the ultrasound shows where reflux begins and ends, treatment can be targeted precisely. A refluxing saphenous vein is typically closed from the inside with endovenous thermal ablation or a non-thermal vein ablation technique. Bulging branches can be removed with ambulatory phlebectomy or closed with ultrasound-guided foam sclerotherapy. Ultrasound is used again during these procedures to guide the needle and catheter, and afterward to confirm that the treated vein has closed and the deep veins are clear.
Ultrasound and insurance
Most insurance plans, including Medicare, require documented reflux on a duplex ultrasound before they will cover varicose vein treatment. The measurements in your report, together with your symptoms and any trial of compression, form the basis of that medical necessity documentation.
Tips for your scan day
- Wear loose shorts or bring a pair, and avoid tight leggings
- Skip lotion on your legs that morning so the gel and probe glide evenly
- Eat and drink normally and take your usual medicines
- Expect to stand for part of the scan; tell the sonographer if you feel lightheaded
- Bring a list of previous vein procedures or old ultrasound reports
Varicose Vein Ultrasound in Houston
If you live in Houston, Katy or nearby and have aching, swollen legs or bulging veins, a venous duplex ultrasound is the most direct way to find out what is going on. Our Houston vein specialist team usually offers same-week appointments, and in many cases the consultation and scan can be done on the same visit. Most insurance plans, including Medicare, are accepted.
Talk With a Specialist at Premier Vein
Have questions about your symptoms or treatment options? Dr. Syed Raza and the team at Premier Vein & Vascular Center can evaluate your concerns and explain your options clearly. Same-week appointments are usually available, and most insurance plans are accepted.
Frequently Asked Questions
Is a venous ultrasound painful?
No. The scan uses warm gel and a handheld probe on the skin, with no needles or radiation. You may feel firm pressure when the sonographer squeezes your calf to test the valves, and standing for part of the test can be tiring, but it is not painful.
How long does a varicose vein ultrasound take?
A full venous reflux study of one or both legs usually takes about 30 to 60 minutes. A quick scan focused only on ruling out a blood clot may be shorter.
Can an ultrasound show varicose veins you cannot see?
Yes. Ultrasound shows refluxing veins beneath the skin that are not visible from the surface, which is why people can have venous insufficiency without obvious bulging veins. It also shows the deeper source veins that feed visible varicose veins.
What is the difference between a DVT ultrasound and a reflux ultrasound?
A DVT ultrasound checks whether the deep veins are compressible and free of clot, usually with the patient lying down. A reflux ultrasound measures valve function with the patient upright and maps the superficial, perforator and deep veins to plan treatment.
Do I need an ultrasound before varicose vein treatment?
Yes. Modern vein treatment is planned from a duplex ultrasound map, and most insurance plans require documented reflux before covering treatment. Treating without a scan risks missing the true source of the problem.
How soon will I know my ultrasound results?
In most cases the findings are reviewed with you on the same day or at your follow-up consultation, and you can ask how they shape your treatment plan.
Can ultrasound detect blood clots as well as varicose veins?
Yes. The same duplex ultrasound used to map varicose veins also checks the deep veins for a current clot or scarring from an old one. If a new clot is found, treatment starts promptly before any varicose vein procedure is planned.
Trusted Health Resources
- Chronic Venous Insufficiency, Society for Vascular Surgery
- Venous Insufficiency, MedlinePlus Medical Encyclopedia (NIH)
- Varicose Veins and Spider Veins, MedlinePlus (NIH)