Doctor insights on:
Does A Ct Scan Always Show A Mini Stroke
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 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
Timing is important: The most sensitive test to determine if someone is having a mini stroke is the neurological examination. A ct scan or MRI scan will confirm or refute the clinical suspicion of a mini stroke. Changes on MRI scan after a stroke can be seen fairly quickly. However, the clinical examination is key. ...Read moreSee 1 more doctor answer
Not usually: A seizure is uncontrolled electrical activity in a portion of the brain, which sometimes extends to involve the whole brain. Symptoms can be as little as a "1000 mile stare", to extreme flailing of the arms and legs. If the seizure is due to a mass in the brain, ct may see it, but MRI is better. Usually, the cause of seizures is a tiny "scar" in the brain, hard to identify even on ct or pet/ct. ...Read more
Both can be useful : MRI of the brain can be useful to demonstrate the territory of the brain affected by the stroke. MRI without contrast can indirectly show clot in the brain. MRA of the brain will potentially show clot. This is typically done in conjunction with MRA of the neck. ...Read moreSee 1 more doctor answer
Does a MRI scan rule out diagnoses of a CT scan? If a CT scan says one thing and MRI says another which is accurate?
It is possible: Sometimes a lacunar stroke does not appear on CT - at least for a small lacunar stroke. An MRI of the brain would be a more useful tool to determine if a stroke has occurred. A CT scan is less costly, and should always be done to evaluate stroke (for bleeding) but it may not see small changes, sometimes even 3 days later. ...Read more
Quite a Lot: MRI is more helpful for soft tissue problems of blood vessels, inflammation, demyelination of brain tissue, and fluid collections. It seems you are undergoing a lot of tests, but without a clear diagnosis you can not be certain of the correct treatment. Ask your physician to explain the different treatments these tests will suggest. Tests are not useful, solely, because you have symptoms. ...Read moreSee 1 more doctor answer
Yes: It can detect a brain tumor, but will be better able to detect a tumor if it performed with IV contrast. Mri with contrast can detect very small tumors that may not be seen with a ct scan. However, it is very uncommon for a 28 yr old to have a brain tumor- not impossible- just uncommon. ...Read moreSee 1 more doctor answer
Would a CT scan show cysts in the brain? If so, would a dr mention them if seen during a brain CT scan after a head injury from a car accident?
Is it possible for a CT scan of the head *without* contrast to show an unruptured brain aneurysm?
Most of the time: Pneumonia is a clinical diagnosis. Xrays are usually 48 hrs behind the clinical manifestation of the disease. Diagnosis of atypical pneumonia, therefore is by clinic and could be confirmed by regular chest x ray and not ct scan. However ct scan is more detailed and more in line with clinical symptoms. Shahzeidi, md. ...Read more
USUALLY NOT: Since aneurysms are a 'defect' in the arterial system --they can really only be seen with a contrast ct study (angiogram) or a mra (mri-angiogram). One time i did have a patient with a leaking brain aneurysm which the effects of which were barely visible on ct but confirmed on mra--and she made it! ...Read moreSee 2 more doctor answers
Tia (transitory ischemic attack) happens when blood supply to a certain area of the brain gets cut off temporarily. This causes a neurologic deficit - weakness, numbness, visual deficit or difficulty with speech. While TIA usually resolves, it indicates that there is a problem with your heart or blood vessels that can cause ...Read more
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