Someone please describe the experience of having an MRI on a knee. Does the entire body go in the MRI machine?
361894
Yes-\nIt's not as bad as you think.  The worst part\nis the loud sounds.  Are you claustrophobic? \nThe thing that helped me the most was closing my eyes\nb/c I didn't really think about how narrow the tunnel was.\nPlus, you can't move!  But honestly, it really isn't that bad if you mentally prepare yourself that you'll be fine\nand that people have them all the time
32990
With an MRI, they trace the outline of internal body parts, via the bloodstreem, to greatly aid the imaging.\nPlus, since they are only mildly radioactive, there is little chance of harming the patient.
360281
Neither MRI nor CT/X-ray uses a radioactive contrast (dye).  The only imaging modality that uses that is nuclear medicine.  To read more about the contrast used in MRI, try the links below:\n\nhttp://www.cc.nih.gov/drd/patedu.html\n\n"If an injection is needed, what is injected and how is it given?\nIf an injection is required to complete your scan, a contrast agent called Gadolinium is used.  This contrast causes the tissues and blood vessels of the body to be seen more clearly than with conventional, non-contrasted MRI.  Gadolinium is injected into the body through veins in your arm or hand.  Gadolinium is a substance that reacts like iron in the body, and produces few side effects when used.  You may feel a cool sensation when the contrast is injected.  You may also get a metallic taste in you mouth, however, these effects usually subside in a few seconds."\n\nhttp://www.srhc.com/services/radiology/mri/faqs.html
83279
oh, just the normal thing..study..haha..oh yeah, i went to have my knee checked..turns out i have an abnormal sumthing..and i need to fix it
511713
there is a great article on how stuff works .com, its quite long but gives a very nice description of everything and how it works\n\nhttp://electronics.howstuffworks.com/mri.htm
465914
mine too! from sports. nothing you can do, you can get knee surgery though.
166019
A machine that takes a picture of your insides by magnetic resonance.
328913
Magnetic Resonance Imaging
51968
yes all matter can be magnetized or we would not have MRI in hospitals. the element at the part of the periodic table where iron is magnetizes and keep that magnetic properties easier than other elements.
40881
It really depends on what you mean by "rheumatoid arthritis".  Is there already major damage to your knee?  Has the knee cartilage been worn down close or to the joint bone? If there is then a knee replacement will definitely help get rid of pain and allow you get around much much easier.\n\nHowever, age is important.  Doctors are reluctant to give a knee replacement unless you are older because knee replacements are not a permanent solution.  However, they are getting to be better and do last longer. Also, some people have a second and third replacements in their lifetime.  How long they last also depends on how active you are.  If you are very active with your new joint then it won't last as long, but if you are moderately active, it will last longer.\n\nA joint replacement is a last resort.  Doctors will usually start out by using medicine, exercise, and healthy eating to help alleviate discomfort.  Also, if you are very overweight, then it will definitely help your knee to lose weight.  Just think how detrimental it would be to carry around an extra 20 pound barbell weight.  A normal weight is better on the knees.
744696
MRI:\n\n\nAn MRI (or magnetic resonance imaging or nuclear magnetic resonance imaging) scan is a radiology technique which uses magnetism, radio waves, and a computer to produce images of body structures. These images can detect the difference between normal and diseased tissue.\n\nMRI makes better images of organs and soft tissue than other scanning techniques, such as CT or x-ray. Breast MRI is excellent at imaging breasts with implants. MRI is also useful for staging breast cancer, determining the most appropriate treatment, and for patient follow-up after breast cancer treatment. MRI is especially useful for imaging the brain, spine, the soft tissue of joints, and the inside of bones.\n\nXray:Chest x-ray (also known as Chest Radiography) is done for the evaluation of the lungs, heart and chest wall. IBC patients will have chest x-rays to determine their Staging and their ability to receive certain chemotherapy agents like Adriamycin which can be damaging to the heart.\nRadiography involves exposing a part of the body to a small dose of radiation to produce an image of the internal organs. When x-rays penetrate the body, they are absorbed in varying amounts by different parts of the anatomy. The ribs and spine, for example, absorb much of the radiation and appear white or light gray on the image. Lung tissue absorbs little radiation and appears dark on the image. Depending upon the type of image-recording medium, chest x-rays can be maintained as hard copy film for filing or as filmless digital images that are archived electronically.
733211
An xray will not show muscle, only bones and some soft tissue. \nAn MRI will show muscles.
950674
Hey, getting an MRI is appropriate...then again the doctor may have to be able to read it correctly. I did have an MRI, one doctor said that I needed surgery, another told me that I need not. So I decided to be conservative and did physiotherapy, wore a brace for sports and it took me almost a year to recover fully. Healing takes time...give it the time that it needs...and it will! God bless U.
571088
hmm if u realy like to travel then go ahead as u say it wil take very long procedure for ur surgery n im sure u ned lot of rest wen that happen ... but i hope u also ned to think  that if u travel n suddenly ur knee hurt wat u wil do ...but if ur doctor say u can then it ok much better good luck
531071
The major difference is that MRI scanners CAN NOT image bone.\n\nUsing a very powerful magnet and pulsing radio waves the detection coils in the MRI scanner read the energy produced by water molecules as they mis-align themselves after each RF alignment pulse. The collected data is reconstructed into a two dimentional illustration through any axis of the body. Bone is virtually void of water and therefore does not generate any image data. This leaves a black area in the images. MRI scanners are best suited for imaging soft tissue.\n\nCT, Computerized Axial Tomgraphy, uses xrays to generate images of the body, including bone. In the CT scanner the x-ray tube, (source) rotates around the patient laying on the table. On the opposite side of the patient from the tube is the x-ray detector. This detector recieves the beam that makes it through the patient. The beam is sampled via some 764 channels, (approximate number of channels). The signal received by each channel is digitized to a 16 bit value and sent to the reconstruction processor. Measurements are taken about 1000 times per second. Scan rotations are usually 1 to 2 seconds long. Each view/channel chunk of scan data is compared to calibration scan data of air, water and polyethelyne, (soft plastic) previously acquired in the exact same relative location. The comparisons allow the image pixels to have a known value for a particular substance in the body regardless of differences in patient size and exposure factors. The more samples, or views, the better the picture. By doing the math you can see that a huge amount a data is acquired to generate one CT slice. 15 years ago it would take a supercomputer called an Array Processor almost a minute to reconstruct the image, now it happens within seconds. Doctors can look at the image and determine what they are looking at simply by the lightness or darkness of the grey areas on the monitor. CT scanners are not able to make still-life images of fast moving things like the heart.
532409
I had a similar experience about 2 years ago.  I fell and I thought I had a really bad sprain.  It was really swollen and I had bruises all the way up to my knee.  I had never broken anything before and I was pretty sure it wasn't broken.  I didn't hear anything snap and it hurt when I fell, but not too bad.  My mom, a nurse, came and looked at it and told me to keep it elevated.\n\nAbout a month later, I had an appointment with a Podiatrist for something totally unrelated.  When he saw how swollen and bruised I was after 4 weeks, he took an x-ray.  I had broken my leg and my ankle was broken in 3 places.  I was shocked - I always thought breaking a bone would be excruchiating pain!  I had to have surgery and they put a plate and some screws in there.  Now I'm back to normal, with a lovely scar to show for it.  No offense to my mom, but I'm thinking it's a good thing she is retired.\n\nIf after 6 weeks you are still swollen, there is definitely something wrong.  They've ruled out broken bones, but you'll have to wait for the MRI to find out what is really wrong.  Sure, you might need surgery, but it could be worse.  For example, did I mention the fact that I have MS, which affects my left leg and my breaks were in my right leg?  What this meant is that, because my left leg is not able to hold me up, crutches did no good.  I was basically living on my couch for 2 months.  \n\nGood luck with everything - I'm sure you'll be fine =)
1061027
if your doctor said its normal, its normal.\nhowever, since you are curious, the usual reasons for painless click or snap in the knee are discoid meniscus and plica in the knee.refer the net\nplease, please dont consult any one else unless it is painful. you are bound to meet a starving surgeon who will succeed in convincing you to undergo scans, scopy or surgery\n\nby the way, the net cost for an arthroscopy in my institution is less than 1000 rs- that works out to less than 30 US dollars- cheap , huh? keep it in mind when somebody offers you surgery!\n\ncvjeena@yahoo.com