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Vascular Terminology
Intro to Sonography
82
Health Care
Graduate
07/28/2013

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Term
Abdominal Aorta
Definition
the portion of the descending aorta that is located at the level of the diaphragm and extends to the bifurcation (common iliac arteries).
Term
Abdominal Aortic Aneurysm (AAA)
Definition
A dilation of the aorta. Most often infrarenal (below the kidneys).
Term
Acoustic shadow
Definition
Loss of acoustic properties of targets lying behind an attenuating structure.
Term
Acute
Definition
Short, severe symptoms of sudden onset or short duration.
Term
Adventivia
Definition
Outermost layer of an artery
Term
Anastomosis
Definition
The natural or surgically-created communication between blood vessels or prosthetic graft and blood vessel as in a bypass graft. It can be proximal or distal.
Term
Anechoic
Definition
Without echoes
Term
Aneurysm, dissecting
Definition
Rupture of the intima allows blood between layers of the vessel wall, expanding the vessel while separating the layers.
Term
Aneurysm, psuedo
Definition
An encapsulated hematoma occurring at the site of an anastomosis, or a ruptured artery, or following an iatrogenic procedure. The pulsing mass resembles an aneurysm.
Term
Anterior tibial artery (ATA)
Definition
A terminal branch of the popliteal artery located along the lateral surface of the tibia and continues onto the dorsum of the foot at the dorsalis pedis artery.
Term
Arterial occlusion
Definition
Complete blockage of an artery.
Term
Arterial ulceration
Definition
A local defect or excavation which is produced by sloughing of inflammatory necrotic tissue.
Term
Arteriovenous fistula
Definition
Communication between an artery and vein. It may be congenital, traumatic or surgically created for dialysis access.
Term
Atherosclerosis
Definition
Disease of the arterial intima, intimal proliferation, deposition of fatty substances and luminal reduction.
Term
Catheterization
Definition
Passage of a small catheter into the artery or vein to obtain blood samples, used with interventional and diagnostic procedures on the arteries in
the heart or the body.
Term
Catheter
Definition
A tube passed through the body for evacuating fluid or injecting them into the body cavities. Typically made of elastic, elastic web, rubber, glass, metal, or plastic.
Term
Causalgia
Definition
Severe neuralgic pain; also called reflex sympathetic dystrophy.
Term
Chronic
Definition
Of long duration, or occurring with repeated frequency; opposite of acute. Occurring over a long period of time, old versus new.
Term
Coagulate
Definition
To become clotted or congealed.
Term
Coagulation
Definition
To change from a fluid to a semi solid mass.
Term
Coapt
Definition
To meet or join. When performing a venous duplex exam, with light probe pressure, the walls of normal veins collapse and come together (compression).
Term
Coarctation
Definition
A stricture or narrowing of a vessel, usually of a congenital nature.
Term
Continuous flow
Definition
In abnormal veins the respiratory phasicity is lost, resulting in a steady flow signal. When
coupled with very low velocity, continuous flow indicates proximal (except in the Portal system) obstruction that is preventing the normal fluctuations in flow that occurs during respiration.
Term
Continuous wave
Definition
A wave in which cycles repeat indefinitely.
Term
Contralateral
Definition
On the opposite side.
Term
Contrast medium
Definition
The use of a foreign substance to provide a difference in density (contrast) so that the tissue or organ can be better visualized.
Term
Collateral circulation
Definition
An alternate, natural circulation pathway. When there is interference in the arterial supply because of obstruction, communicating channels develop to accommodate blood flow. The peripheral resistance of the collateral vessels is higher because of the smaller diameter of the vessels.
Term
Common carotid artery
Definition
The main artery that supplies the head and neck. It arises from the innominate (brachiocephalic) artery on the right and from the aorta on the left CCA. The CCA branches into the internal and external carotid arteries.
Term
Constriction
Definition
The narrowing of a vessel opening.
Term
Cyst
Definition
A closed sac or pouch, with a definite wall, contains fluid, semi fluid or solid material.
Term
Critical stenosis
Definition
A stenosis of sufficient diameter that flow rate and pressure are significantly affected, also referred to as “hemodynamically significant.”
Term
Drop attacks
Definition
A symptom of vertebrobasilar insufficiency
manifested by loss of postural control resulting
in sudden periodic falling, not associated with vertigo or
Unconsciousness
Term
Dysarthria
Definition
A speech disorder in which the pronunciation is unclear although the linguistic content and meaning are normal.
Term
Dysesthesia
Definition
Abnormal sensations on the skin, such as feelings of numbness, tingling, prickling, or a burning or cutting pain.
Term
Dyskinesia
Definition
A defect in the ability to perform voluntary movement.
Term
Dysphagia
Definition
A condition in which the action of swallowing is either difficult to perform, painful, or in which swallowed material seems to be held up in passage to the stomach.
Term
Dysphasia
Definition
Lack of coordination of speech, and failure to arrange words in an understandable way; related to cortical damage.
Term
Ecchymosis
Definition
A skin discoloration consisting of large irregularity formed hemorrhagic areas.
Term
Ectatic
Definition
Distended or stretched.
Term
Edema
Definition
A local or generalized condition in which the body tissues contain an excessive amount of tissue fluid.
Term
Embolectomy
Definition
Removal of an embolus from a vessel.
Term
Embolism
Definition
An obstruction in a vessel from a foreign substance or blood clot.
Term
Embolus
Definition
A mass of undissolved matter present in a blood or lymphatic vessel and carried there by the blood.
Term
Endarterectomy
Definition
Surgical removal of atherosclerotic material and intimal lining from within an artery.
Term
Endarteritis
Definition
Inflammation of the innermost layer (intima)of an artery.
Term
Endograft
Definition
A graft placed within a vessel.
Term
Erythema
Definition
Reddening of the skin.
Term
Etiology
Definition
Study of the causation of disease.
Term
Exogenous
Definition
Originating outside an organ or part.
Term
Extracranial
Definition
Outside of the skull, usually used in reference to vessels or structures outside of the cranium.
Term
Extravasation
Definition
Discharge or escape, as of blood or other substance from within a vessel into the tissue.
Term
Extrinsic
Definition
Originating from without, opposite of intrinsic.
Term
Friable
Definition
Easily crumpled; term is occasionally used to describe atherosclerotic plaque.
Term
Fusiform
Definition
uniform circumferential dilatation; spindle shaped.
Term
Gangrene
Definition
Tissue death, usually as a result of inadequate blood supply; occasionally due to infection. The lack of blood supply may be due to atherosclerosis, embolism, spasm, frostbite, tourniquets, etc.
Term
Gastrocnemius
Definition
That large muscle of the posterior portion of the lower leg that propels venous blood up the leg it contracts. Commonly referred to as the calf muscle pump.
Term
Graft
Definition
the material used, either organic or inorganic, that is surgically inserted to replace a defect in the body.
Term
Greater saphenous vein (GSV)
Definition
One of two major superficial veins of the lower limb. It originates on the dorsum of the foot, ascends medially along the calf and thigh, and drains into the common femoral vein. It is the longest vein in the body and is the vessel of choice or the lower extremity bypass procedures and it is also used for coronary artery bypass.
Term
Hematoma
Definition
A blood-filled swelling; refers to an abnormal collection of blood in the body that is typically the result of a broken or ruptured blood vessel. Hematomas can cause a minor skin bruise, or a collection of clotted blood that is deep within a muscle, organ or even the skull.
Term
Homan’s sign
Definition
Pain in the calf muscle resulting from passive dorsiflexion of the foot. It is sometimes indicative of deep venous thrombosis.
Term
Homologous vein
Definition
A graft which is similar in structure and origin to the native vessel and is donated from another human being or specimen.
Term
Hydronephrosis
Definition
obstruction of the outflow from the kidney somewhere in the ureter, bladder, or urethra, causing dilation of the kidney’s collecting system.
Term
Hyperechoic
Definition
Producing echoes of higher amplitude than normal for the surrounding medium.
Term
Hypoechoic
Definition
amplitude than normal for the surrounding medium.
Term
Hypogastric artery
Definition
Another name for the internal iliac artery, which supplies the pelvic viscera and musculature.
Term
In situ
Definition
in position. Used to describe a vascular surgery procedure where the greater saphenous vein remains in its anatomical position as the vessel is transformed into an arterial conduit.
Term
Iliac artery
Definition
Originates at the terminal bifurcation of the abdominal aorta
Term
Iliac vein
Definition
Formed by the union of the internal iliac vein which drains the pelvis and the external iliac vein which is a continuation of the common femoral vein.
Term
Incompetent
Definition
to perform natural function. Used to refer to venous valves which no longer close completely, permitting blood to flow in a backward direction.
Term
Infarct
Definition
a localized area of ischemic tissue necrosis due to inadequate arterial blood supply.
Term
Infarction
Definition
An event occurring when there is an arterial occlusion or stenosis to the point of insufficient blood flow to an organ.
Term
Inferior vena cava (IVC)
Definition
Originates from the union of the right and left iliac veins terminating in the right atrium of the heart.
Term
Infrapopliteal
Definition
located below the popliteal artery.
Term
Infrarenal
Definition
located below the renal arteries.
Term
Inguinal ligament
Definition
a fibrous band extending from the anterior superficial iliac spine to the pubis tubercle in the groin.
Term
Innominate vein
Definition
formed by the union of the internal jugular with the subclavian vein.
Term
Innominate artery
Definition
arising from the arch of the aorta, dividing into the right subclavian and right common carotid arteries.
Term
Internal carotid artery (ICA)
Definition
arises from the common carotid artery (CCA) at the carotid bulb, and courses posterolaterally to the base of the skull where it gives rise to vessels which feed the brain, nose, orbit, internal ear, and forehead.
Term
Intracranial
Definition
within the skull
Term
Intraluminal thrombus
Definition
soft clot, which is within the walls of a blood vessel.
Term
Ipsilateral
Definition
on the same side, opposite of contralateral.
Term
Jugular vein
Definition
major vein subdivided into anterior, external and internal jugular veins bilaterally.
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