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Welcome
to the Patient Information section of ICAVLonline.
The ICAVL provides the following information as a service to
the general public. This section is designed to help prospective
patients stay educated and informed about noninvasive vascular
technology and the importance of accredited laboratories.
What
Does 'Vascular' Mean?
The
word vascular refers to our body's circulatory system
-- the blood vessels which carry blood from the heart to the
body's organs (the arteries), and from the organs back to the
heart (the veins).
What
is Vascular Disease?
Vascular
disease refers to the unhealthy changes which occur in our blood
vessels as we age. Examples include plaque build-up in the arteries,
varicose veins, and blood clots in the veins.
What
is Vascular Ultrasound?
The
medical specialty of vascular technology utilizes diagnostic
ultrasound to generate images of blood flow within the veins
and arteries. Ultrasound uses high frequency sound waves, similar
to the sonar that a ship uses to detect structures beneath the
surface of the water. Vascular ultrasound can also be known
as a Doppler or duplex study. For example, if your physician
wants to make sure that you do not have a blood clot in your
leg, he or she might order a venous duplex or venous Doppler
examination.
Vascular
ultrasound procedures are non-invasive, meaning they do not
require the use of needles, dyes, radiation or anesthesia and
are, therefore, relatively painless and harmless.
The
information obtained through vascular ultrasound examinations
is extremely helpful to physicians in diagnosing a variety of
conditions related to cardiovascular disease, disorders of the
heart and blood vessels. Early detection of life-threatening
vascular diseases is possible through the use of noninvasive
vascular testing techniques performed within vascular laboratories.
Vascular
ultrasound's reliability in diagnosing conditions related to
heart disease and stroke is encouraging as we strive for ways
to reduce the more than 500,000 lives lost in the United States
each year to these disorders. However, it is critical that
the public realizes there are many facets that contribute to
an accurate diagnosis based on vascular ultrasound examinations.
These factors include the skill of the technologist/sonographer
performing the examination, the type of equipment used, the
background and knowledge of the interpreting physician and quality
assurance measures. In fact, poor ultrasound examinations often
lead to inconvenient, redundant studies, misdiagnosis and even
unnecessary tests or surgery.
ICAVL
Accreditation - A "Seal Of Approval" Patients Can
Count On.
Private
offices, clinics and departments within hospitals that are accredited
by the Intersocietal Commission for the Accreditation of Vascular
Laboratories (ICAVL) voluntarily submit to a review of their
daily operations. By participating in the accreditation process,
these medical facilities demonstrate a commitment to the performance
of quality vascular testing and strive to meet nationally recognized
standards. During the accreditation process, applicant vascular
laboratories must submit documentation on every aspect of their
daily operations. While completing the application, laboratories
are required to identify and correct potential problems, revising
protocols and validating quality assurance programs. Applications
submitted, including samples of the vascular examinations performed,
are reviewed by experts throughout the United States and Canada.
Accreditation is granted only to those facilities that are found
to be providing quality patient care, in compliance with The
ICAVL Standards. Once granted, ICAVL accreditation is valid
for a period of three years, after which time the facility must
undergo a repeat evaluation.
When
scheduled for a vascular ultrasound examination, patients
should inquire as to the accreditation status of the facility
where their examination will be performed. Patients
can rely on accreditation as an indication that the facility
where their examination will be performed has proven a commitment
to providing quality testing for the diagnosis of vascular
disease. Patients can rest assured that accredited facilities
have been carefully critiqued on all aspects of their operations
considered relevant by medical experts in the field of vascular
technology. Find an accredited
vascular laboratory in your area. |
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The
ICAVL Certificate of Accreditation (sample shown here)
is an easy way for patients to identify an ICAVL-accredited
facility. >>
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ICAVL
accreditation is widely respected within the medical community,
as illustrated by the support of eleven medical societies including
physicians, technologists and sonographers. The specific medical
specialties represented include cardiology, neurology, radiology,
vascular medicine, vascular surgery, neurosurgery, internal
medicine and biology. In addition, Medicare and several private
insurance carriers either require or strongly recommend that
their providers of vascular ultrasound be accredited. However,
patients should still remain vigilant in making sure that their
vascular examinations are performed within accredited laboratories,
because for many facilities/laboratories it remains a voluntary
process.
Types Of Vascular Exams
CAROTID DUPLEX
During a Carotid Duplex or Doppler examination, ultrasound
is used to evaluate the carotid arteries located in the
neck that feed the brain with blood. Gel is applied to the
skin of the neck. A transducer is then placed on the gel-covered
areas to obtain images and evaluate the blood flow in the
arteries. Your doctor may order this test if you have physical
examination findings or symptoms that suggest that you may
have a blockage in the carotid artery. |
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TRANSCRANIAL DOPPLER (TCD)
The blood vessels that supply the brain within the skull
are evaluated by Transcranial Doppler. This examination
is performed with a small transducer that is placed on the
skin of the face and head. This exam takes approximately
60 minutes. |
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VENOUS DUPLEX
During a Venous Duplex or Doppler examination, ultrasound
is used to evaluate the veins that carry blood to the heart
from the legs or arms. Gel is applied to the skin of the
legs or arms. A transducer is then placed on the gel-covered
areas to obtain images and evaluate blood flow in the veins.
Your doctor may order this to evaluate the cause of pain
or swelling in your legs or arms. |
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ARTERIAL DUPLEX
During an Arterial Duplex or Doppler examination, ultrasound
is used to evaluate the arteries that feed the arms and
legs with blood. Gel is applied to the skin of the legs
or arms. A transducer is then placed on the gel-covered
areas to obtain images and evaluate the blood flow in the
arms or legs. Your doctor may order this test to evaluate
the cause of pain in the leg muscles with walking. |
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ARTERIAL
PRESSURES AND WAVEFORMS
Ultrasound and blood pressure cuffs are used to evaluate
the arteries that supply the arms and legs with blood. Several
blood pressure cuffs are placed at different segments on
the patient's legs or arms. When inflated, the cuffs provide
blood pressure readings as well as waveforms. This test
will locate areas of blockage within the arteries. Your
doctor may order this test to evaluate the cause of pain
in the leg muscles with walking. |
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ABDOMINAL VASCULAR DUPLEX
During an Abdominal Vascular Duplex or Doppler examination,
ultrasound is used to evaluate the blood vessels that bring
blood to and away from the abdominal organs. Gel is applied
to the abdomen. A transducer is then placed on the gel-covered
areas to obtain images and evaluate blood flow in the arteries
and/or veins. |
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The ICAVL is a nonprofit organization established to provide
a mechanism for the accreditation of facilities that perform
comprehensive testing for vascular disease with noninvasive
testing modalities.
Excerpts
of this information are taken from the Society for Vascular
Ultrasound's five copyrighted patient education brochures, including
"Vascular Testing and You." Vascular laboratories
interested in ordering copies of patient education brochures
from the Society of Vascular Ultrasound can obtain more information
here.
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