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Heart:
According to
American Heart Association data,
published 2004, for about 65% of men
and 47% of women, the first symptom
of cardiovascular disease is heart
attack or sudden death (death within
one hour of symptom onset).
Yet the
evidence is that stress tests, even
if they were performed shortly prior
to these events, would not detect
that these events were about to
happen for most of the individuals
who were about to have events.
[source
www.wikipedia.com]
Echocardiography Stress Test: -
"Echo"
Echocardiography is used to diagnose
cardiovascular diseases. In fact, it
is one of the most
widely used diagnostic tests for
heart disease. It can provide a
wealth of helpful information,
including the size and shape of the
heart, its pumping capacity and the
location and extent of any damage to
its tissues. It is especially useful
for assessing diseases of the heart
valves. It not only allows doctors
to evaluate the heart valves, but it
can detect abnormalities in the
pattern of blood flow, such as the
backward flow of blood through
partly closed heart valves, known as
regurgitation.
Echocardiography
look at the ultrasound waves that
bounce back from the heart but can
not detect heart plaque.
Echocardiograph suffer from
false negatives and false positive
test results. The tests are
graded normal, abnormal or equivocal
(unknown). Basically they are
a guess. False negative
results
incorrectly indicate there is no
blockage when plaque does exist and
subsequently patients suffer a heart
attack or death.
Echocardiography can not see plaque
in arteries, so it only detects
issues once damage has occurred to the
heart.
Nuclear Stress Test
Nuclear Stress test
utilize radioactive "tracers" such
as Thallium and Cardiolyte to
increase the clarity of a
Nuclear Stress test. It's purpose
is to determine how well blood is
flowing through the heart and is an
indicator of the mechanical
condition of the heart. The
problem is nuclear stress test will
miss 100% of early plaque buildup
and may only detect an issue once
plaque has reached 70% blockage.
The tests are graded normal,
abnormal or equivocal (unknown).
Basically they are a guess. Nuclear Stress test can not see
plaque in arteries, so it only
detects issues once damage has occurred to
the heart.
With nuclear stress
testing, false positive rate is 20%
meaning that 20% of the people are
sent to the hospital for cardiac
catherization costing upwards of
$20,000 and subjecting the patients
to a 5% chance of death only to find
out there are not major blockages.
Conversely, nuclear stress test show
a 15% false negative rate
meaning that 15% of the people are
sent home and told there are not
issues only to discover they have
major blockage that results in death
or permanent heart damage via heart
attack.
ViaScan Electron Beam Tomography (EBT)
For the first time in
EBT cardiovascular preventive
history, plaque can be seen as small
as 1 millimeter in size years or
decades before substantial build up
develops that results in heart
attack or surgery. This
enable you and your health care
provider to take a proactive
approach to your cardiovascular
health.
If
plaque is detected, then an iodine
contrast is injected and a virtual
angiogram enables you to see the
degree of plaque blockage with
accurate imaging. With
ViaScan, you can see the plaque in
the arteries before your options
are limited to stents
(70%<blockage<99%) or by-pass (100%
blockage) or heart attack resulting
in heart damage or death.
Over the last
couple of decades, other methods
have been developed as ways to
better detect atherosclerotic
disease before it becomes
symptomatic. These have included
both (a) anatomic detection methods
and (b) physiologic measurement
methods.
Examples of anatomic methods
include: (1) coronary calcium
scoring by computed tomography, (2)
carotid IMT (intimal medial
thickness) measurement by
ultrasound, e.g. IntiMaTe, and (3)
IVUS.
[source
www.wikipedia.com]
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Test's
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detect
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Echo
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Nuclear
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See Testing
Comparison Chart on Cost, Accuracy and Radiation
See the Plaque, Treat the Plaque,
Live a Better Life.
At ViaScan, we
provide you with an individualized
health care program that has the
potential to reduce the plaque in
30% of individuals, stop the
accumulation of plaque in 60% or
slow the accumulation of plaque in
90% of the individuals. If
left untreated, plaque will
accumulate at rate of 40% each
year.
Colon
Conventional
Colonoscopy
Colonoscopy is the
endoscopic examination of the large
colon and the distal part of the
small bowel with a CCD camera or a
fiber optic camera on a flexible
tube passed through the anus through
the 4 or 5 feet of colon. It may
provide a visual diagnosis (e.g.
ulceration, polyps) and grants the
opportunity for biopsy or removal of
suspected lesions. However
given that only 10% of individuals
ever need to have polyps removed,
all 100% were sedated, miss a day of work
and risk colon puncturing or
bleeding . Ninety percent of
people could receive preventive
virtual colonoscopy screening for about
one-fourth the cost and
non of the discomfort and
inconvenience of a conventional
colonoscopy.
Virtual
Colonoscopy
The
ViaScan virtual colonoscopy is a
medical imaging procedure which uses
low radiation x-rays to produce two-
and three-dimensional images of the
colon (large intestine) from the
lowest part, the rectum, all the way
to the lower end of the small
intestine and display them on a
screen. The procedure is used
to diagnose colon and bowel disease,
including polyps, diverticulosis and
cancer.
The
virtual colonoscopy is more
comfortable than conventional
colonoscopy because it does
not use a colonoscope. As a result,
no sedation is needed, and the
patient can return to his/her usual
activities or go home after the
procedure without the aid of another
person. Virtual colonoscopy provides clearer, more
detailed images than a conventional
x-ray using a barium enema,
sometimes called a lower
gastrointestinal (GI) series.
Further, about 1 in 10 patients will
not have a complete right colon
(cecum) evaluation completed with
conventional colonoscopy. It also
takes less time, about fifteen
minutes, than either a
conventional colonoscopy or a lower
GI series.
Virtual colonoscopies provides a secondary
value added benefit of
revealing diseases or abnormalities
outside the colon. For
example, with a virtual colonoscopy,
we view your reproductive organs,
bladder, kidneys, abdominal aorta,
liver, spleen, gall bladder at no
additional charge. If
performed individually, these scans
would cost you thousands of dollars.
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