Houston Methodist. Leading Medicine.
Houston Methodist. Leading Medicine

Methodist Cardiovascular Surgery Associates

Our Services - Diagnostic Technologies


Diagnostic Arteriography/Venography

Arteriography and venography are used to diagnose abnormalities in blood flow resulting from diseases of the circulatory system. They involve the injection of dye (contrast agent) into the patient's bloodstream so abnormalities in blood flow can be visualized by X-ray-based imaging techniques. For real time images, dye is injected during some catheter-based procedures such as Percutaneous Coronary Intervention (PCI), or angioplasty, for visualizing blockages and treatment results.

Intravascular Ultrasound

Intravascular ultrasound (IVUS) is a medical imaging methodology using a specially designed catheter with a miniaturized ultrasound probe. It uses ultrasound technology to see from inside blood vessels out through the surrounding blood column, visualizing the endothelium (inner wall) of blood vessels.

Peripheral Vascular Laboratory

The state-of-the-art Peripheral Vascular Laboratory at the Methodist Cardiovascular Surgery Associates performs non-invasive ultrasound examinations to diagnose vascular conditions. This information is used to plan treatments and monitor the long-term progress of patients with vascular conditions.

Carotid ultrasound

Carotid arteries are the main conduits for blood flow to the brain. Stenosis (narrowing due to plaque) results in restricted blood flow which may be asymptomatic until a major cerebrovascular event occurs. This non-invasive procedure uses high frequency sound waves to detect blockages and abnormal blood flow; allowing physicians to plan the appropriate medical and surgical treatments.

Venous duplex exam

This combination of upper and lower extremity ultrasound scans of large veins is used to detect blood clots or stenosis (narrowing). It can detect deep vein thrombosis (DVT) which is potentially life threatening; and venous incompetence or insufficiency.

Arterial Doppler exam

Poor circulation or cold extremities are some of the common symptoms of reduced blood flow to the extremities. This non-invasive exam uses Doppler technology to test the rate of vascular blood flow in each extremity. A transducer emits high frequency sound waves and multiple readings are taken to develop a composite picture of bodily blood flow.

Abdominal and aortic duplex exam

This imaging exam measures the diameter of the aorta and blood flow in order to detect and monitor the growth of potentially life-threatening aortic aneurysms. This exam is also performed after endograft repair; and to study the renal and mesenteric arteries.

Other duplex exam uses

Duplex exams are also used to assess the function of Arteriovenous dialysis fistulas and grafts.

Transcranial Imaging Center

Transcranial Doppler (TCD) is an innovative combination of ultrasound and Doppler technologies used to detect blood flow within cranial blood vessels and identify conditions such as stenosis (narrowing); thrombosis (clots); embolisms; ruptures; and ischemia (lack of sufficient blood flow). It is also used to observe cranial blood flow in stroke patients. The Transcranial Imaging Center at Methodist is a dedicated program for diagnosing intracranial artery pathology. Go to the Transcranial Imaging Center page for more information on TCD and the full range of available testing services.