Doctor insights on:
What Does A Brain Ct Scan Show
Some things: CT scan of brain without contrast shows basic anatomy of brain, gray white matter differentiation, ventricles, and physiologic calcifications.Ventricles enlarged/ hydrocephalus, mass effect with displacement of normal structures, some bleeding,abnormal calcifications in tumors or old subdural hematomas, fractures.CT with contrast adds enhancement of certain lesions not seen,hyper/hypo vascular. ...Read more
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
No: Labyrinthitis is not diagnosed with either ct or mri. It is a clinical diagnosis, meaning a diagnosis that is made by your symptoms and examination. There is a test called an eng which can be done as well that looks at how your eyes move in response to challenges to your balance system. The eyes are "hard wired" to the inner ear and in cases of vertigo they will move rapidly. This can be measured. ...Read moreSee 1 more doctor answer
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
Also, very fast!: Agree with excellent answer above. Additionally, ct scans have the advantage of being much faster than MRI scans, and they are much more widely available- if you come into a small hospital's er at 3 in the morning, they will likely be able to do a ct immediately, while an MRI might wait until the next morning (if it is available at all!). ...Read moreSee 3 more doctor answers
Maybe: L'hermitte-Duclos disease is a very condition that is not cancerous by itself. Since the majority involve the cerebellum, that is not a strong point for CT imaging because of the bones. They get in the way. Under certain conditions it may be visible. MRI is now a days the way to go. ...Read more
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
Many things.: It can detect many conditions. Ct is particulaly good at detecting bleeding in the acute setting and hydrocephalus, and some masses. It's not nearly as good as MRI for looking at small structures and white matter disease. Both ct and MRI are usually more sensetive and specific when contrast is given. ...Read more
Several things: An mrcp (magnetic resonance cholangiopancreatography) is a type of MRI scan that can evaluate the pancreas (mass, pancreatitis), bile ducts (stones, abnormal size/appearance), gallbladder (stones, mass), and liver. It's most used to look for a stone in the common bile duct. In addition, other organs including the spleen, adrenals, kidneys, and stomach/bowel are identified. ...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
Yes: Has to be a CTA (CT angiogram). CT scan of the head without contrast doesn't detect aneurysms unless they are larger. CT scan of the head with contrast has a slightly better chance. CTA of the head is good for seeing aneurysms. See radiologyinfo.org and stroke association.org for more details. ...Read more
CT brain: One of the most common reasons to order CT brain without contrast is to rule out a cerebral hemorrhage - new blood shows up better, and can be obscured with contrast. Structures and any abnormalities such as lesions can still show up quite well without contrast, especially with newer CT imaging. Hope that helps! ...Read more
It depends: Both are very good at imaging various parts of the body. Depending on the body part and the question being asked, ct or MRI may be better. In general, MRI can "see" the soft tissues a little better (e.g., brain and spinal cord, rotator cuff) and ct is sometimes better for looking at the bones (e.g., facial fractures, sinuses). Doctors work closely with radiologists to determine the best test. ...Read more
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