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Doctor insights on: When Do They Need A Ct Or Mri To Detect Ivh

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When do they need a CT or MRI to detect ivh?

When do they need a CT or MRI to detect ivh?

For a term, rarely: If a term or a late preterm infant is stable enough to be transported to ct or MRI area, and less than 4 days old, ct is preferred. Otherwise MRI is the best. They are recommended if the infant has seizures, extreme lethargy or irritability, recurrent apnea (forget to breath), evidence of trauma (like head injury from forceps or vacuum delivery), suspected shaken baby syndrome, CNS infections etc. ...Read more

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Computed Tomography (Definition)

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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How does an MRI differ from a ct?

How does an MRI differ from a ct?

See below: I agree with the above answer but would like to add that in a way MRI is a way to look into the body at a molecular/atomic level, studying how the hydrogen atoms behave in your body and thus help in the diagnosis of your condition. There are other atoms can can be study (such as sodium) but hydrogen base MRI technique is most common. ...Read more

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What can an MRI show that a CT can't?

What can an MRI show that a CT can't?

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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What is the difference between an MRI and a ct?

What is the difference between an MRI and a ct?

MRI/CT: A CT scan uses x-ray radiation to generate an image. An MRI uses magnetic fields "tuned" to the frequency of protons in the body. Since each scan essentially measures a different property of tissues in the body, they are complementary tests. That is why if one doesn't provide a definitive answer, often the other will be ordered. ...Read more

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What is the difference between an MRI and a ct?

What is the difference between an MRI and a ct?

MRI/CT: A CT scan uses x-ray radiation to generate an image. An MRI uses magnetic fields "tuned" to the frequency of protons in the body. Since each scan essentially measures a different property of tissues in the body, they are complementary tests. That is why if one doesn't provide a definitive answer, often the other will be ordered. ...Read more

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Can you please tell me how MRI and CT scans differ?

Can you please tell me how MRI and CT scans differ?

Radiation: The links that dr. Janjua listed are excellent. But the simple answer to your question is: ct scans depend on radiation to generate their images. Mri scans use magnetic waves to activate the protons which then give off characteristic signals that produce the images. The bottom line-no radiation with mris. Mris are better for soft tissue differentiations (ie. Brain tumors), ct are better for bone. ...Read more

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Cts versus mris? What is the difference between a CT and a mri?

Cts versus mris? What is the difference between a CT and a mri?

Different technology: Ct uses ionizing radiation, like xray, to produce images of the inside of your body. Mri uses a very powerful magnet to produce similar images. Each technology has it's strengths. For example, MRI is better at detecting stroke, while ct is better at detecting appendicitis. ...Read more

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Would an MRI or CT show something the size of a pinhead, about 2mm?

Would an MRI or CT show something the size of a pinhead, about 2mm?

Close, if there is: Enough contrast with adjacent structures. Radiologists (physicians with 5 or more years of additional training after medical school) routinely identify pulmonary nodules in the lung down to 2 millimeters, and 1 mm nodules can sometimes be identified. Certainly, 3 mm nodules are clearly seen at both ct and MRI in many organs, if different in appearance from the surrounding tissue. ...Read more

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What is the major difference between CT and MRI technology? How are the results different?

What is the major difference between CT and MRI technology? How are the results different?

CT : Ct and MRI are complementary exams in many cases, which means that we can examine the same body area and get different "looks" to help us figure out what we are seeing. Ct uses ionizing radiation, while MRI uses magnetic fields to create images. (a physicist once reminded me that a magnetic field is also radiation, but the kind that people talk so much about, in relation to cancer potential, is the ionizing type.) example: when a kidney or liver mass is seen at ct, a radiologist might suggest that an MRI could help to further clarify (1) whether it is real, or (2) what it is. We don't always need an MRI to clarify a ct finding, just sometimes. That "sometimes" is determined by the radiologist, depending on how the abnormality looks at ct. ...Read more

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Are there times when both CT and MRI procedures may be necessary? What are the main differences, and is one more risky than the others?

Yes: There are times when both are used. CT uses xrays to make the images, MRI uses both magnetic waves and radio waves. Both have sensitivities that make them good for certain things and worse for others. We often get both because they tell different things. Since CT uses x-rays we try to keep that in mind so that we don't irradiate people needlessly. CT scans can theoretically increase cancer risks. ...Read more

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Can a diagnostic/interventional neuroradiologist give a comprehensive consultation including the evaluation of the radiological images (ct, mri) and physical evaluation? Or is his/her consultation limited to the evaluation of the images only?

Absolutely. I : Absolutely. I am an interventional radiologist and perfrom many diagnostic and therapeutic procedures. I frequently see patients in my clinic and perform a comprehensive consultation. I also follow my patients after their procedure. Additionally, i spend some of my time as a diagnostic radiololgist. Most diagnostic radiologists do not perform comprehensive consulations. However, an interventional neuroradiologist will certainly see patients and perform consultations in anticipation of a possible procedure. ...Read more

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Why have a MRI on bowels? I aalready had a CT and colonosby

Depends: Sometimes ct and colonoscopy cannot get you enough information in terms of differentiating tissues on scan or exam or to get a more detailed look. That is when an MRI is appropriate which may be the case with you. ...Read more

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How much for a CT scan vs mri?

How much for a CT scan vs mri?

About the same: There were appreciable differences in previous years but most facilities charge about $800-1000 for a ct and about $1200-1500 for an mri. It can vary greatly depending on where you have it done. Call ahead and try to negotiate a price. ...Read more

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Which is safe and MRI or CT scan?

Which is safe and MRI or CT scan?

Both are safe.....: Mri has no ionizing radiation, thus there is no risk of radiation induced cancer. However, MRI is not for everyone. If you are claustrophobic, have a heart pacer, or have shrapnel you may not be able to have an mri. Ct does have radiation, but the dose is very small and in most cases less than you are exposed to just by living on earth for one year. You, your doc and radiologist should decide. ...Read more

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How do a CT scan and a MRI differ?

How do a CT scan and a MRI differ?

Imaging tests: Ct uses radiation, like multiple x-rays. Mri uses magnets, and is very useful in characterizing soft tissue differences such as in the brain or joints, but also is more expensive and takes much more time. ...Read more

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How are an MRI and CT scan different?

How are an MRI and CT scan different?

Differences: The ct scan uses radiation from multiple x-ray devices to see internal organs. The MRI uses very strong magnetism to orient the body's water molecules and see internal structures such as ligaments, joints, brain, etc. Each study has its own individual benefits or indications. ...Read more

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How is a CT scan and an MRI different?

MRI vs CT: The main difference is that CT uses ionizing radiation and MRI uses radiowaves (non-ionizing radiation). It is the ionizing radiation that causes injury to the DNA and potential to develop a cancer down the road. In general, CT is good at looking a differences in radiation absorption (x-ray density). MRI is good at looking at subtle chemical differences (water and fat) in tissues. ...Read more

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How can I change my CT scan to an mri?

How can I change my CT scan to an mri?

Talk: To ordering physician. Tests can only be done with a doctor's order. Mri may not show what the doc is looking for. ...Read more

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What is involved in getting a CT scan? Mri?

What is involved in getting a CT scan? Mri?

See your doc: First you have to see a doctor to be evaluated. If your symptoms suggest something that needs further work-up, then your doctor may order a ct or mri. Your insurance company may have to approve as well. ...Read more

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Can CT and MRI see previous strokes or tia's?

Yes, usually.: Yes, ct and MRI can see previous strokes as long as they are older than 24 hours or so (mri can see strokes acutely.) tia's, by definition, are transient and usually don't leave any evidence on scans. ...Read more

Dr. Ronald Krauser
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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