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What Does Carotid Duplex Show That Ct Scan Did Not
Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more
Vein Thrombosis : Brain mr angiogram (mra) and mr venography (mrv) are specifically designed to examine your blood vessels. Mrv is often used to examine the intracranial venous system, particularly in the evaluation of dural sinus thrombosis. Mri in conjunction with mrv is both sensitive and specific enough to provide the best noninvasive method of diagnosing cerebral venous thrombosis. ...Read moreSee 1 more doctor answer
Imaging of your body: A ct scan uses x-rays to create a cross sectional image of the body part affected. It is particularly useful at identifying bony problems, the presence of bleeding, and hard masses. By adding an oral or intravenous contrast before the scan, additional details within soft tissues come to life on the scan. ...Read more
Usually normal: A mildly prominent common bile duct is not an uncommon finding on CT scan. The common bile duct carries bile from your liver down to your gallbladder and intestine. If you have had your gallbladder removed the bile duct will appear more prominent. If you have and obstruction of the bile duct it will appear prominent. Obstruction of the duct would cause pain and abnormalities of the liver tests. ...Read more
Better details: The resolution, details shown, on ct is more effective than that of ultrasound. Ultrasound shows liquids e.g. Cysts and effusion better and is cheaper but in obese patients ultrasound has limited penetration. Accordingly, ultrasound, in these patients, is usually replaced by ct that views fatty tissues better and penetrates as deep as needed for better resolution. ...Read moreSee 1 more doctor answer
It's possible: Ct scans are a great first step in evaluating the brain. However, they are not infallible. All tumors start as small lesions and can be missed at a very small size on ct scans. Often, a ct scan will show the brain's reaction to a tumor rather than the tumor itself. If there is little or no reaction, the tumor can be even harder to detect. ...Read more
The MRI detected the venous sinus thrombosis however the CT scan did not? Why not? The MRI did not detect the swollen optic nerves, why not? Thanks
Different techniques: Mri are better at seeing some soft tissue features; ct is better at bones and other soft tissue features like edema (swelling). The 2 techniques are complementary. That's why you got both. The fact that it isn't seen on one doesn't negate the fact that it was seen on the other. Example: if you misplace your keys and can't find them with sunglasses but do with bifocals, are they found? ...Read moreSee 1 more doctor answer
Indication 4 surgery: Cystoscope is a surgical procedure with risk. Before signing consent, have family with you to ask surgeon these questions. Understand your risk/benefit analysis. Typically the cystoscope allows views of the inside lining, not provided on ct and kub, with access to remove objects, place stent, take biopsy, make additional recommendations. Kub and ct may show obstruction, scope can correct. ...Read moreSee 1 more doctor answer
More function: Mri is more anatomic in detecting configuration of soft tissues and extent of disease. Sometimes not able to entirely differentiate infection from tumor or infarction of bone. Gallium may be used sometimes to detect infection. However not specific accumulating in infection, some tumors, and inflammatory conditions. Nuclear tagged white blood cells are usually more specific for infection. ...Read more
Echocardiogram results indicate an avm. CT scan of chest and MRI & mra of brain still negative. where else might the avm be, what does thi mean?
Anywhere: AVM's can be anywhere including the brain, lungs, intestines. Dr. Rich White at Yale runs the world class HHT center for patients with AVM's in multiple vascular beds. ...Read more
Mri reveled mass in ribs/thoracic. Dr ordered pet scan and blood work. Why not biopsy first? Does this mean cancer is definite?
Sectional: Anatomy, planar relationships. U/s are2-dimensions, ct's slices can be quite thin in head to toe direction, as well as 'seeing' front to back and right to left. U/s may define size, characteristic of solid, cystic or mixed, but also can be very operator dependent too, and hard to reproduce. ...Read more
Doppler involves the use of reflected sound waves to evaluate the flow of blood in vessels. Vascular ultrasound evaluates the structure and architecture of blood vessels and can be used to visualize blockages in arteries and veins. Using these together is called a duplex scan and is what vascular labs all utilize for diagnosis. Always look to see that the lab you go to ...Read more
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