MRI

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!)

Yes it can. This is because fMRI technology can be used to create images of oxygen use in various brain areas. It can be assumed that when an area is active, it consumes oxygen. Therefore, fMRI can identify whether or not a region is active or not during a process when it should be according to the norm.

Example:

http://uk.youtube.com/watch?v=oaTfdKYbudk

For me, it took about five days. Though my doctor told me it could be anywhere from three days to two weeks. For me, it took about five days. Though my doctor told me it could be anywhere from three days to two weeks.

This is controversial as bullets can deflect and move in conventional 1.5T scanners. Research the various literature yourself at the NLM pubmed site (google it). There are reports of bullets migrating within the spinal canal, and reports of no adverse sequela to the patient with bullets in their canals undergoing mri with complete paralysis. Bullets near vessels are dangerous, as fragments can theoretically cause vascular injury (bleed!). In general, most radiologists favor not putting patients at risk when bullets are near the spinal cord or major blood vessels. There are always exceptional cases, dealt with on a case-by-case basis. This is controversial as bullets can deflect and move in conventional 1.5T scanners. Research the various literature yourself at the NLM pubmed site (google it). There are reports of bullets migrating within the spinal canal, and reports of no adverse sequela to the patient with bullets in their canals undergoing mri with complete paralysis. Bullets near vessels are dangerous, as fragments can theoretically cause vascular injury (bleed!). In general, most radiologists favor not putting patients at risk when bullets are near the spinal cord or major blood vessels. There are always exceptional cases, dealt with on a case-by-case basis.

Usually around 35.00 to 40.00 per hour. Wages are about 10% higher if you work in a private imaging center than if you work at a hospital. Wages are also 10-25% higher if you have a Bachelors Degree in Diagnostic Imaging. MRI, Nuke Med, Radiation Therapy, and Ultrasound all pay around the same but vary between location and employers, but CT Techs usually make about 5.00 an hour less than the others and rad-techs about 15.00 an hour less than the others.

In order to create clear and effective imaging of soft tissue with a high level of detail and precision, with minimal radiological harm to the patient.

my grandpa had that done.he said its a simple thing to have done.what they will do is haveyou put earplugs in and tape your ears and depending on what part they are looking at is how far you will go inthemachine.like if its your head they are looking at you will go in the machine up to your chest.they give you a button to push if you get nervous.the machine makes loud noises and you have tostay still the whole time.thats all it is.

i think radio if not x rays but im pretty sure its radio

When you're told that an MRI is "not remarkable" or "unremarkable" it usually means that they didn't find anything within the result. Where as if you were told it was "remarkable" it typically means that they found something in the area where they were looking.

it sort of looks like a giant polo but if you go on Google images it has lots of pictures of MRIs

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Magnetic resonance imaging (MRI), nuclear magnetic resonance imaging (NMRI), or magnetic resonance tomography (MRT) is amedical imaging technique used in radiology to visualize internal structures of the body in detail. MRI makes use of the property of nuclear magnetic resonance(NMR) to image nuclei of atoms inside the body. MRI can create more detailed images of the human body than are possible with X-rays.

CT is computed tomography and CAT scan is computed axial tomography.

A CT scan is a computer-assembled set of X-rays taken from different vantage points. The computer can create 3D models of whatever it images, but the nature of X-ray imaging is that it is more effective for denser tissues (bone), than soft-tissues (organs or blood). There are new CT techniques that can help image organs (the heart is of particular interest), but MRI is generally capable of imaging soft tissues with greater detail. MRI is more frequently used for neurological imaging, and can be used to do chemical analysis of tissues (spectroscopy) inside your body non-invasively.

Because they use very different means to image, both CT and MRI can 'miss' things that would better show up on the other modality.

Hypodensity indicates a decrease in density. Hypodensity on a CT scan can indicate damaged tissue, from trauma, illness, or birth defect.

As we know,Clarity of the image is decided by its Spatial Resolution but not by Pixel Resolution.

CT have high Spatial Resolution but MRI have comparable Spatial Resolution to CT&far better Contrast Resolution than CT-So,MRI is the BEST to demonstrate Anatomy,especially in parts containing more soft tissue[Eg:Brain]&CT is the BEST to demonstrate Bony Anatomy.

Yes they are.

Nearly all kinds of electromagnetic radiation are emitted during radioactive decay

MRI is Magnetic Resonance Imaging and a CAT is a computerized X Ray (Computer Assisted Tomography)

MRI will work fine in case of diagnosis of soft tissues and CT will work fine for bony structures and inner ear analysis.

Also MRI do not use any radiation it is based on magnetic effect so less side effects compared to CT which uses X- rays.

MRI is very much costlier compared to CT.

MRI is problematic in case if the patient is having some metallic implant, which will cause interference with the magnetic field.

In order to determine any hairline crack then MRI would be preferred compared to CT.

Both and neither. They each have areas of the body they are better at. Many DR's think the MRI is better because they think it is newer, but both machines have been around since the late 60's.

Magnetic Resonance Imaging (MRI) is a non-invasive imaging technology that produces three dimensional detailed anatomical images.

In my experience, an MRI can cause more of a problem than a help. You have to be very careful on the type of shunt that you have. If it is a particular type( I think it is the Codmans) you can't have a MRI. The reason for this is that it changes the pressures.

The only reason that I know this, is that it has happened to me on a few times, before we figured out why the pressures were changing.