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Doppler Vs Duplex Ultrasound
An ultraound, also known as a sonogram, is a painless and relatively inexpensive imaging test that utilizes sound waves instead of ionizing radiation. There are no side effects. Ultrasound can give us two-dimensional, and in some applications three-dimensional, images of structures and organs in virtually any part of the body. In addition to diagnostic uses, such as evaluating abnormalities in the abdomen, pelvis, and breast, ultrasounds are commonly used to guide needle and catheter placement in a variety of surgical ...Read more
Doppler Ultrasound: Ultrasound has proven to be cost-effective and quite accurate in determining the degree of narrowing in the carotid artery. Many vascular surgeons, including myself, solely rely on it to decide whether someone needs an operation. Mra is not so good and over-estimates the actual degree of narrowing. I would not rely on its findings to decide on operating. As mentioned a cta is much better. ...Read moreSee 1 more doctor answer
No screening: There is nothing called screening for mesenteric stenosis. If you have no symptoms then you no need to screen for occlusion. If you have chronic symptoms then duplex ultrasound is a good starting test but has a lot of limitations. In cases of acute ischemia then ct scan is best to start with. ...Read moreSee 2 more doctor answers
Carotid artery disease, different results from duplex ultrasound vs. Ct angiogram (cta), is that possible?
No: Testicular us looks for abnormalities of the testicle. Transrectal us is used to evaluate either the anal sphincter mechanism or stage rectal rumors. ...Read more
Carotid artery disease, what to believe, if different results from duplex ultrasound vs. Ct angiogram (cta)?
Carotid doppler showed 50% bilateral blockage, mr angiogram was negative. Which is more accurate?
Debatable: Few vascular surgeons make decisions on carotid artery stenosis based on mr, as carotid doppler (ultrasound) has been proven to be very reliable when a good technologist performs the study. From what you're describing, your carotid arteries are likely without disease as the reporting standards for ultrasound haven't quite been set. In my lab you'd likely be found to have no disease at all. ...Read more
A Doppler ultrasound is a noninvasive test that can be used to estimate your blood flow through blood vessels by bouncing high-frequency sound waves (ultrasound) off circulating red blood cells: A regular ultrasound uses sound waves to produce images, but can't show blood flow. A Doppler ultrasound may help diagnose many conditions, including: Blood clots, Poorly functioning valves in your leg veins, which can cause blood or other fluids to pool in your legs (venous insufficiency), Heart valve defects and congenital heart disease, A blocked artery (arterial occlusion), Decreased blood circulation into your legs (peripheral artery disease), Bulging arteries (aneurysms), Narrowing of an artery, such as in your neck (carotid artery stenosis). A Doppler ultrasound can estimate how fast blood flows by measuring the rate of change in its pitch (frequency). During a Doppler ultrasound, a technician trained in ultrasound imaging (sonographer) presses a small hand-held device (transducer), about the size of a bar of soap, against your skin over the area of your body being examined, moving from one area to another as necessary. This test may be done as an alternative to more invasive procedures, such as arteriography and venography, which involve injecting dye into the blood vessels so that they show up clearly on X-ray images. A Doppler ultrasound test may also help your doctor check for injuries to your arteries or to monitor certain treatments to your veins and arteries. ...Read more
Ultrasound study: Carotid duplex is an ultrasound study to evaluate the carotid (and usually the vertebral) arteries (to the brain) for narrowing and blockage. Blood flow is measured using doppler ultrasound to define areas of stenosis (narrowing). It is an outpatient study with no preparation. You just need to lie quietly on a table while the probe is placed against your neck. The exam is totally painless. ...Read moreSee 2 more doctor answers
Whats the difference between training for diagnostic medical sonography or vascular ultrasound tech?
Vascular ultrasound : Early training is essentially the same. Later training will focus on vascular or general depending on the program. Many technologist train in both. ...Read more
CTA and: conventional angiography are best for carotid artery stenosis imaging. Ultrasound or Doppler is a great screening test and typically is performed first. MRA often overestimates carotid stenosis due to turbulent flow in areas of narrowing. MRA best for carotid dissection and for patients that cannot receive X ray contrast. CTA is used more often due to invasive nature of conventional angiography. ...Read moreSee 1 more doctor answer
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