Doctor insights on:
Ct Scans Vs Mri
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
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 moreSee 1 more doctor answer
I've gotten a few scans this year. 3 CT scans and 3 mri, one with contrast. Can I have cancer because of it?
Extremely unlikely: So unlikely that the likelihood approaches zero. You have more radiation exposure on a cross country flight, or hiking at altitude. That said, WHY did you have all those scans? If you have had unintentional weight loss, night sweats, or other unexplained pain, the scans may be looking for cancer. But the risk of cancer due to the scans is nearly zero. Why did you have them? ...Read moreSee 1 more doctor answer
I've had to many CT scans this year maybe 8 on diff parts of body.Does a MRI have same amount of radiation ?
I've had 3 CT scans with iodine contrast (my third one I had today) & multiple MRI's with contrast. Will this damage my kidneys?
Contrast OK but CT: exposure might be a little too much. Each time you get contrast, your kidneys will easily excrete it. As long as the doses are separated by a day or more, it won't hurt your kidneys. At only 19, you should talk to your doctor about ways to reduce the number of CTs to limit the ionizing radiation. MRIs and Ultrasounds have no ionizing radiation and are considered low risk for future cancer. ...Read more
I see in MRI and CT scans they are not able to show peripheral nerves. Is there any scan or investigation to visually see these important nerves?
I have headaches that start at 5am every morning at work. What can I do to or take to prevent it? MRI n CT scans shows nothing.
Needs evaluation.: Headaches are one of the most common maladies encountered in life. Its good news that your CT and MRI did not show a structural problem. Consider going to a physician specially trained in evaluating headache as the treatment you seek depends on the underlying problem. Considerations include caffeine withdrawal, Intracranial hypotension (may be missed on prior studies), and migraine. ...Read more
My mid to lower paraspinal muscles are constantly pulled. All mri's , xrays, and CT scans normal. Is there a condition that could cause this?
Hi I have oral nerve pain so I have been told after MRI and CT scans found nothing, can nerve problem be detected some how and put right thankyou?
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