MRI

MRI, or Magnetic Resonance Imaging, is an imaging technique using a very powerful magnet and sophisticated detectors or 'scanners' to obtain very detailed images of any part of the body. There is no radiation or x-rays involved. The MRI can be non-contrast, contrast, or both. If both, the non-contrast proceedure is done first. No matter what part of the body is being imaged, the contrast is injected intravenously. A nurse or specially trained technician will start an IV, usually in the arm, and then the liquid contrast material is injected, and the MRI performed.

An MRI scan is an effective way to see where ascites is coming from.

about 20 min.

I believe they are called a Radiologic Technologist. However, I am not for sure.

To see if you have cancer or cancerous tissue.

well,when it's time to get off of them.Valium will be must easier than xanax as far as withdrawal goes.

I like Valium better anyway.It seems more relaxing to me than xanax...which can made some people moody and grouchy(myself included).

Don't take any of these too long..it will be harder than you think to stop taking them and it takes MONTHS to get back to your normal self again.

I know from experience.Got pregnant and had to get off of Valium.It was C-R-A-Z-Y!

They are good at what they do but if you take them every day for even a couple months....you stand a chance of withdrawals.

Just don't take them everyday and you should be alright.

"you" meaning ..anyone reading this.

Surgical staples are made of non-magnetic stainless steel, however, you never know how much trace amounts of magnetic material may remain. Every manufacturer has different standards. They'll ask you before the procedure if you have any metal at all within your body, so they'll tell you if it's okay or not. Another option is a CT scan which is just as effective when done with contrast dye. Since I have a lot of metal in me it interferes with an MRI, so I've had to get CT's done for the past10 years.

You absolutely must remove your makeup and nail polish. It may not "matter to anyone" but you need to remove any fake substances you would apply to enhance your appearance. I also suggest washing your body gently with dove soap for sensitive skin.

It is estimated that there are between 7,000 and 10,000 MRI machines in the US. There are also a number of other machines, frequently referred to as nMR spectrometers, which are essentially the same device, but much smaller and used for chemical analyses.

u have 2 be a certain size to have one of these scans which is a massive disadvantage 4 every1.

This is really not a disadvantage. Patients who can do a web search for the nearest Espree scanner will find that the scanner accept patients up to 550 pounds. The bore opening is 30 inches which is the widest in the world and the bore is alsoonly about 39 inches in depth which makes it the shortest in the world. For everyone being scanner a part of your body will be outside the scanner.

The true disadvantage if any is that if you have a pacemaker or non compatible metal implant you cannot have a scan. Patients should always ask if implanting a metal device is safe and will limit their later options. I have a friend who had a vagus nerve stimulator implanted for seizures but he did not have a complete seizure workup at the time. His MRIs were lousy. He can now never have an MRI and they will never be able to see if he has subtle findings such as hippocampal atrophy or scelrosis or heterotopic grey matter. Our 1.5T OPEN BORE MRI scanner allows everyone to have a comfortable MRI study up to 550 lbs.

my husband has t2 intense foci in the subcortical white matter in the frontal and parietal reigon these are compatible with foci of chronic ischaemic change the finding is related to small vessel disease his mood swings are getting worse would this disease be a part of mood swings.

New or used?

I have seen used machines sell for as low as $10,000. ( keep in mind this is an older machine and probably wont give you the best images compared to the latest technology) But maybe that is all that is needed for the types of scans being done at that location.

I have seen newer machines sell for as little as $250,000 to well over $2,000,000. (yes that's 2 million) Its like the options when buying a car and you pay more for newest technology. Places buying scanners evaluate what options are required for the type of scanning they do.

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Almost none. There are some surgical procedures a patient may have had done, prior to having an MRI ordered, that will not allow them to have an MRI study. A pace maker would be a good example. The magnetic field can erase or reprogram the pacemaker, and depending on the material used move the pace maker or the wires in the heart.

Most modern surgical implants are safe in MRI machines, but it is safest if you make sure to let the technologist know you have had surgery in the past.

I have read some studies (forgive me I don't remember references) when I was doing MRI that stated that some people could have arm numbness when left inside a strong MRI machine for extended periods of time. This seems to effect men more so than women.

I never experienced this nor met a patient who has. The magnets are large and the biggest problem I have seen with the use of them is patients becoming claustrophobic.

The strength of the magnet is measured in teslas from 1 tesla to 3 tesla. Usually over 3 is not considered safe for humans and is only used in research.

About 20 minutes. But it dependes on what part of the body. I personally think its hard for young children to have MRI scans because you have to stay still for that whole 20 mins, but they do make you very comfortable. Its also dangerous if you wear any metal or have a metal filling or pins in your arm, but they check you beforehand for any metal. The machine makes a lot of noise so they let you listen to music or just wear headphones.

I am not quite sure what the person is wanting to know but, as an MRI technologist, I felt I might be able to shed some light on the question. MRI stands for, "magnetic resonance imaging". We use a magnetic field to image the hydrogen protons in the body that have been subjected to radio frequencies. The term resonance means that these protons are spinning at the same frequency (in sync). Patients may choose to have an OPEN MRI or a CLOSED MRI. The difference is that with a closed unit, the images are better because the magnet is stronger. It is an enclosed tube that is usually open on both ends. An OPEN MRI is usually a table with equipment above you and equipment below you (nothing on the sides). The OPEN is used to image people that are claustrophobic or that may be too large (over a weight limit) to fit inside the CLOSED unit. It is always best to discuss plans with your physician if claustrophobia is the issue. I hope this has helped.

It really depends on what the MRI is for. If it is an MRI of your leg, water generally wouldn't have any effect on that. If you are having an MRI of your GI track, then you probably should not. The best bet is to call your doctor's office or the lab that you are having the MRI done at.

None. By radiation, we're referring to ionizing radiation, or radiation with high enough energy to cause molecular damage, or possibly DNA damage. Radiation therapy, CT scan, Nuclear scans and X-rays all use ionizing radiation. MRI uses magnetic fields to induce electric currents, and employs radiofrequeny waves ( a type of electromagnetic radiation) that is not ionizing radiation. It is a form of energy, and thus metal objects, and even metal in tattoos can heat up and cause burns.

This sounds like a TIA or Transient Ischaemic Attack - what is known a "mini stroke". when a TIA is experienced it often presents with similar symptoms to a Cerebrovascular Accident (CVA - or stroke), such as weakness (usually on one side of the body), confusion, dizzy spell etc... However with a TIA, in comparison with a CVA, it usually resolves within 24 hours with no prevailing dysfunction. Be cautious though, a TIA is usually a warning sign of a possible CVA, and therefor medical help should be sourced ASAP.

No MRI is not harmful to the body of people.

To anyone who has had an MRI of the brain -- especially a CLOSED one (as opposed to the now ubiquitous open MRIs) -- the second worst thing (for most people claustrophobic feelings are the first) is the NOISE...

They typically give earphones to block out noise, and the radiologist's instructions will come through on them now and again. They usually ask you from time to time to hold your breath for a moment, to be sure your head is absolutely still.

They may pipe music in through the 'phones, but let me tell you, once that thing gets going, you won't hear any music. Not even if you're listening to heavy metal.

All you will hear is:

"Rrrrrrrrrrrrrrr -- WHAMMMM!! Ka-CHUNG Ka-CHUNG Ka-CHUNG Ka-CHUNG Ka-CHUNG Ka-CHUNG Ka-CHUNG Ka-CHUNG...." at a decibel level that you will be quite sure is equal to the noise of an old Concorde -- or possibly a new space-shuttle -- taking off from your backyard.

It goes on and on and ON and ON AND ON until you start thinking you're going to totally lose it, and you have to wonder if this feeling is going to have some influence over what your brain looks like to the machine. Relax; it doesn't. If it were a PET scan, that'd be different. (And less noisy anyway!)