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Doctor insights on: What Can A Ct Scan Of The Brain Catch That A Brain Mri Scan Cannot

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What can a CT scan of the brain catch that a brain MRI scan cannot?

What can a CT scan of the brain catch that a brain MRI scan cannot?

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 more

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Dr. Daniel Lebowitz
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Computed Tomography (Definition)

Computed tomography is also known as CT scan. 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


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I suffered of anxiety during a brain MRI evaluation , and it can not be completed. What others procedures (b.Map, CT scan) are useful for the brain?

I suffered of anxiety during a brain MRI evaluation , and it can not be completed. What others procedures (b.Map, CT scan) are useful for the brain?

Options: It is not uncommon for patients undergoing MRI scans to feel claustrophobic and have to end the test prematurely. If the information needed is important to make a diagnosis or determine treatment, you can try having the procedure with an open mri. Alternatively, if your doctor needs the clarity of the regular MRI images, you may benefit from mild anti-anxiety medications taken before the scan. ...Read more

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If a brain MRI shows no acute process but only a nonspecific signal change in left parietal, is it advisable to do a CT scan considering its risk?

If a brain MRI shows no acute process but only a nonspecific signal change in left parietal, is it advisable to do a CT scan considering its risk?

Not necessary : It is not necessary to undergo a CT. Of course it would depend on why you had the MRI in the first place. Most of these findings that are called nonspecific are vascular spaces and not by themselves a cause to worry ...Read more

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Does a radiologist look for regional brain atrophy in a routine brain mri/ct scan?

Does a radiologist look for regional brain atrophy in a routine brain mri/ct scan?

Yes: The radiologist looks for any abnormal anatomical variation whether it be atrophy, malformation, infarction, hemorrhage, tumor or mass effect. Thanks. ...Read more

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Which one is better at detecting blood clots (in the brain) MRI or CT scan?

Which one is better at detecting blood clots (in the brain) MRI or CT scan?

MRI: Blood clots can lead to strokes, which MRI is more sensitive at detecting. To evaluate blood vessels for narrowing, one can use either MRI or ct. ...Read more

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I got infraorbital neuralgia, Brain MRI=good, CT scan = chronic maxillary sinus issue on side of the neuralgia. Could there be a relation?

I got infraorbital neuralgia, Brain MRI=good,  CT scan = chronic maxillary sinus issue on side of the neuralgia. Could there be a relation?

Yes: Yes. Strong chance of relationship. See ENT doc with special expertise in sinus problems for management of chronic sinusitis. Resolve chronic sinusitis and see what happens to infraorbital pain. "Burning" pain is difficult to treat. If no resolution, see orofacial-TMJ doc. ...Read more

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Ordered CT scan brain MRI for lumbar spine after fall stairs lft leg has been numb 3yr prior to stairs spine not bad brain chronic microvascular ishemic white matter disease ms? Autoimmune?

Ordered CT scan brain  MRI for  lumbar spine after fall stairs lft leg has been numb 3yr prior to stairs spine not bad brain chronic microvascular ishemic  white matter disease ms? Autoimmune?

Ischemic Brain: Not likely. At your age, the vascualr ischemia is more apt to be due to chronic high blood pressure or diabetes. It is important to follow up on this with your doctor to avoid small lesions called "lacunar" infarcts. Often, medication can be prescribed which will improve your micro vascualr integrity and avoid further damage. ...Read more

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Safe for someone who has shunt for normal pressure hydrocephalus to get brain MRI for suspected pituitary adenoma? If no, is cat scan used instead?

Safe for someone who has shunt for normal pressure hydrocephalus to get brain MRI for  suspected pituitary adenoma? If no, is cat scan used instead?

Check with neurosurg: Check with the neurosurgeon as to the type of shunt in place. With normal pressure hydrocephalus, it is very common that the shunt is a programmable shunt that allows the neurosurgeon to change the amount of drainage with a special magnet. There are some that are MRI resistant and some that aren't(these need reprogramming soon after mri). If it is non-programmable, you don't need to adjust it. ...Read more

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What to do if i'm really scared to get a brain MRI scan results?

What to do if i'm really scared to get a brain MRI scan results?

Meet with your doc: Meet with your doctor to go over the results of your mri. Your doctor can help explain the results and answer any questions you may have. ...Read more

Dr. Ihab Ibrahim
5 doctors shared insights

Mri (Definition)

Mri or magnetic resonance imaging is one of the more recently developed imaging modalities available to physicians. It uses powerful magnets to generate images. There is no ionizing radiation which is a major advantage over many other modalities. Mri is the best imaging exam that we have for most soft tissue and joint related problems. There are radiologists ...Read more


Dr. Michael Korona
1,756 doctors shared insights

Ct Scan (Definition)

Ct scan uses data from a beam of xrays and reconstructs a cross sectional image of your body. It is a high dose of xrays and used only when the benefits outweigh the risk. Cancer risk is 1 in 500 in children. Also using iodinated contrast might cause transient renal failure in about 5% of patients. (contrast induced nepropathy) most do not explain this to the patient as ...Read more