what does mri stand for?
88177
magnetic resonance imaging
664263
Cause the MRI is the best Equipment in medical imaging to have high contrast images to soft tissues\n\nand these images cant be done by Xray and CT cause X ray beam have very high attenuation to bones .... the used more in image the skull and bone structures
911266
MRI\n\nThe authors measured the superior vena cava in the newborn by radiologic, anatomic and histologic methods and analysed the correlations between cross-sectional area and the biometric data. "\n\nYou get to use that definition when you understand it.  LOL
514089
A positron is a part of magnetic resonance and is detected during an MRI scan. Because cancer cells have a different rate of positron emmission than healthy cells, it will show up on the MRI.
769725
sounds like a herniated disc\nhave the MRI done\nit is more reliable than a cat scan\nby continuing to work in this condition you risk doing more and possibly permanent damage to your back
982456
That would be the MRI, ma'am.
313101
Radiology is considered SCIENCE...\n\n1 : the science of radioactive substances and high-energy radiations \n2 : a branch of medicine concerned with the use of radiant energy (as X rays or ultrasound) in the diagnosis and treatment of disease
1142721
you may need a cat scan then..MRI will not show a "slipped disc" you need a c.t.
609495
A proper physical exam and possibly an MRI.
366266
Nuclear medicine involves the use of radioactive isotopes to create images of the body/interior of the body.  These images are used to diagnose certain problems and conditions.\nExamples of the tests used in nuclear medicine are the MRI, computerized tomography, and PET scans.  \n\nFor more information see article here:\nhttp://en.wikipedia.org/wiki/Nuclear_medicine\n\nHere is a Dept. of Labor information sheet on nuclear medicine techs:\nhttp://www.bls.gov/oco/ocos104.htm
939758
Physics is involved in all types of diagnostic imaging: xrays, MRI, CT scans, PET. Look them up and do your own homework.
37296
NMR stands for Nuclear Magnetic Resonance which is a physical phenomenon based upon the magnetic property of an atom's nucleus. Not all nuclei possess magnetism. NMR studies a magnetic nucleus, like that of a hydrogen atom (1H is the most receptive isotope at natural abundance), by aligning it with a very powerful external magnetic field and perturbing this alignment using an electromagnetic field. The response to the field (the perturbing), is what is exploited in NMR spectroscopy and magnetic resonance imaging.\n\nNMR spectroscopy is one of the principal techniques used to obtain physical, chemical, electronic and structural information about a molecule. It is the only technique that can provide detailed information on the exact three-dimensional structure of biological molecules in solution. Also, NMR is one of the techniques that has been used to build quantum computers.
1042486
MRI scans are performed in a very strong magnetic field.  There is no conclusive proof, but it is generally felt that exposure to strong magnetic fields generated by MRI scanners is harmless to humans.  That being said, however, there are some theoretical risks.  Without getting too technical, MRI images are generated by rapid variations in the magnetic field.  These variations cause the water protons within the body to behave a certain way, which in turn generate very minute signal which can be picked up by special receiver coils that make up part of the MRI scanner.  These signals are then processed by the scanner, and and image is generated.  The rapid shifts in magnetic fields can theoretically produce heat as a by-product.  This is especially true for any metallic object within the scanner that has the shape of a ring or closed loop.  In fact, this can produce enough heat in conventional MRI scanners to cause flesh burns.  This is one reason why all metal must be removed before getting an MRI scan.  The actual magnetic field itself is probably safe.\n\nAs for PET scans, the physics is entirely different.  PET scans generate an image by radioactive emissions that are produced in the body after getting injected with radioactive material.  The PET scanner itself is really nothing but a giagantic receiver device to detect these emission.  While the actual dose of radiation from a PET scan is felt to be reasonably safe, it is still radiation nonetheless.  The more PET scans you have, the more radiation you will be exposed to.  But there is no danger to just lying in the scanner itself without getting injected with the radioactive isotope because the scanner itself does not generate actual radiation.
435075
die injection? u probably have scared the h*ll out of the asker. dont worry baby we dont need u dead to get a contrast image. penelope was talking about dye. the idea of using dye is to get a better picture of the liquid filled spaces like the blood vessels or the ventricles in the brain. in practice without contrast MRI is more commonly done than contrast MRI.
89709
I think what you may be referring to is increased signal intensity in a T2 weighted MRI of the parietal lobe of the brain.\n\nParietal lobe: This is a segment of the brain mostly concernly with interpreting your senses eg. touch, pain, temperature etc\n\nT2: A T2 weighted MRI is a special kind of scan mostly used for looking at the brain.\nWhen an area on the MRI appears brighter than expected, the radiologists call it "increased signal intensity", and this is due to any increase in water content within that area of the brain, eg. inflammation, tumour, swelling etc.
427648
Having a MRI when you have braces will not hurt you in the least. It will not cause any ill health effects, and you will not feel any pain. \n\nBraces may cause distortion of the images, especially the part of the brain closest to the mouth. This is also true on a MRI of the cervical spine (neck). If you have a removable retainer or dentures, we would ask you to take it out prior to a scan or your brain or neck. If your mouth has unremovable appliances, we just go ahead and scan you anyway. \n\n"Objects that may interfere with image quality if close to the area being scanned include: Dental fillings (while usually unaffected by the magnetic field, they may distort images of the facial area or brain; the same is true for orthodontic braces and retainers)."\n\nhttp://www.radiologyinfo.org/content/safety/mri_safety.htm\n\n"Fillings in your teeth, dental braces, and permanent bridges may cause some distortion of the MR image around the mouth area, but will not cause harm to you or the MRI equipment." \n\nhttp://www.uihealthcare.com/topics/testsandexams/magneticresonanceimaging.html
179325
I had an MRI. Those  discs sure hurt, don't they? Mine is L4 and L5...what is yours? I am so sorry that you have this too.