MRI safety about MRI magnet room-wall,constructions,faraday's cage?
91821
You have actually managed to string together a number of words without actually asking a question. Your lack of a coherent thought is either a result of the modern educational system, drug use, mental retardation or laziness. In any event, no answer I could give here could possibly be adequate to save you from yourself.
299746
No, I am pretty sure they would have used Titanium.  I have Titanium plate in my neck and will have it in my back soon.  I saw one of your other questions about metal detectors in the Airport and Titanium will not set off metal detectors or cause problems if you have to have an MRI.  Ask your Doctor what type of metal plate you have in your head but I know it won't rust.\n\nHope this helps!  :)
1000916
Magnet therapy, or magnetic therapy, or magnotherapy is a pseudoscientific alternative medicine claiming that certain medical disorders can be effectively treated by exposure to magnetic fields. There is no scientific evidence for the claim but it may act as a placebo in some people. Adherents believe that magnetic fields from permanent magnets placed close to the body can cause bones to heal faster, relieve pain, and perform other forms of healing. It is most commonly used for joint disorders and back problems.\n\nProponents of magnet therapy claim that subjecting certain parts of the body to doses of magnetic "energy" (or fields) has a beneficial effect. This belief has led to the popularization of an industry involving the sale of magnetic-based products for "healing" purposes: magnetic bracelets and jewelry; magnetic straps for wrists, ankles, and the back; shoe insoles, mattresses, and magnetic blankets (blankets with magnets woven into the material); and even water that has been "magnetized"\n\nCriticism of these products focuses on scientific facts about magnets, including the claim that the typical magnet used in a bracelet purchased over-the-counter is not powerful enough to penetrate human skin, let alone strong enough to have a lasting effect on muscle tissue, bones, blood vessels, or organs. Notably, some people working in physics research work for hours per day with their whole body immersed in magnetic fields far stronger than those from the bracelets, and (if they observe precautions regarding pacemakers) are no more or less healthy than their peers. There are handheld neodymium magnets that produce a field of over one tesla and are often used in various hobbies. Household devices such as a garbage disposal, or an electric razor, also produce significant magnetic fields when in use.\n\nNo magnet healing product manufacturers have demonstrated scientifically that they actually achieve what they claim, and most cannot even agree on what exactly the magnetic fields do. Some claim that the magnets help to circulate the blood by some interaction with the iron in hemoglobin, a major component of red blood cells. However, in its ionised form, iron is not ferromagnetic. If it were, use of magnetic resonance imaging would instantaneously kill patients.[1] Still others claim that the magnets can restore the body's electromagnetic energy balance. There are also claims that the south pole of a magnet acts different on the body than the north pole. The list of ways that manufacturers purport that magnetic fields affect the body is almost endless.\n\nIt should be noted that many, if not most, of the websites that provide information and resources promoting the benefits of magnetic therapy belong to individuals and companies that profit from the sale of magnetic therapy products.
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
519034
The hard drive platters are coated with a special coating that contains microscopic, magnetically-sensitive particles.  As the heads move across the spinning hard drive, the tiny particles are put into one of two positions -- a position indicating a "1" (ON) or a position indicating a "0" (OFF).  This all occurs extremely fast, of course.  The microscopic particles retain their position until they are overwritten by the heads, or a magnet is brought into close proximity to the drive platters.  Amazing, huh?
997877
that's sweet here i think is a link for a patent. I was thinking on how to make something like that, accelerating itself but i failed :P another of my questions was proven wrong leading me to the conclusion it is impossible for magnets to be used in mine.\n\nhttp://www.inventhelp.com/contactform_patent.asp?id=106&wcw=overture&GCID=S17330x002&KEYWORD=patent+office&MATCHTYPE=search
606299
cause on this ratio u will control the magnetic field out from the magnet .. and every time u increase the magnetic field u in crease the resonance frequency .. and this frequency the main idea of the imaging on the MRI .. cause on it we will have the T1 and T2 .. which is the techniques of imaging
778854
Electromagnetic shielding\n\nElectromagnetic shielding is the process of limiting the flow of electromagnetic fields between two locations, by separating them with a barrier made of conductive material. Typically it is applied to enclosures, separating electrical devices from the 'outside world', and to cables, separating wires from the environment the cable runs through. Electromagnetic shielding used to block radiofrequency electromagnetic radiation is also known as RF shielding.\n\nThe shielding can reduce the coupling of radio waves, visible light, electromagnetic fields and electrostatic fields, though not static magnetic fields. (A conductive enclosure used to block electrostatic fields is also known as a Faraday cage.) The amount of reduction depends very much upon the material used, its thickness, and the frequency of the fields of interest.\n\nMaterials used\nTypical materials used for electromagnetic shielding include sheet metal, metal mesh, ionized gas, plasma and aluminum foil. Any holes in the shield or mesh must be significantly smaller than the wavelength of the radiation that is being kept out, or the enclosure will not effectively approximate an unbroken conducting surface.\n\nAnother commonly used shielding method, especially with electronic goods housed in plastic enclosures, is to coat the inside of the enclosure with a metallic ink or similar material. The ink consists of a carrier material loaded with a suitable metal, typically copper or nickel, in the form of very small particulates. It is sprayed on to the enclosure and, once dry, produces a continuous conductive layer of metal, which can be electrically connected to the chassis ground of the equipment, thus providing effective shielding.\n\n\n[edit] Example applications\nOne example is a shielded cable, which has electromagnetic shielding in the form of a wire mesh surrounding an inner core conductor. The shielding impedes the escape of any signal from the core conductor, and also signals from being added to the core conductor. Some cables have two separate concentric screens, one connected at both ends, the other at one end only, to maximise shielding of both electromagnetic and electrostatic fields.\n\nThe door of a microwave oven has a screen built into the glass of the window. From the perspective of microwaves (with wavelengths of 12 cm) this screen finishes a Faraday cage formed by the oven's metal housing. Visible light, with wavelengths ranging between 400nm and 900nm, passes easily between the wires.\n\nRF shielding is also used to prevent access to data stored on RFID chips embedded in various devices, such as biometric passports.\n\n\n[edit] How RF shielding works\nElectromagnetic radiation consists of coupled electric and magnetic fields. The electric field produces forces on the charge carriers (i.e., electrons) within the conductor. As soon as an electric field is applied to the surface of an ideal conductor, it generates a current that causes displacement of charge inside the conductor that cancels the applied field inside, at which point the current stops.\n\nSimilarly, varying magnetic fields generate current vortices that act to cancel the applied magnetic field. (The conductor does not respond to static magnetic fields, so static magnetic fields can penetrate the conductor freely.) The result is that electromagnetic radiation is reflected from the surface of the conductor: internal fields stay inside, and external fields stay outside.\n\nSeveral factors serve to limit the shielding capability of real RF shields. One is that, due to the electrical resistance of the conductor, the excited field does not completely cancel the incident field. Also, most conductors exhibit a ferromagnetic response to low-frequency magnetic fields, so that such fields are not fully attenuated by the conductor. Any holes in the shield force current to flow around them, so that fields passing through the holes do not excite opposing electromagn
323262
Request an open MRI if it is available where you are going to have it done.  It is a much less closed in atmosphere and I find that many of the patients with anxiety over a regular MRI find this a suitable alternative. Also make sure you tech is aware that you anticipate having a difficult time.  One last thing, traditional relaxation and self talk is always a plus. A calming scent on a tissue, etc. Anything that works for you. Good luck!
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
857984
Wow, your computer still works?  I am impressed...\n\nMagnets will usually distort the monitor, disrupt what being read and written on the hard drive, disaable the mouse or pointing devices and much much more.
610327
electromagnetic or magnetic fields. It is easiest to research and to do the practical of. Just place the magnets and use iron filings to measure it
226823
you can't block or absorb, but can always divert it. get a cage of good ferro-magnetic material, and magnetic field will not pass inside the cage. \n\nIt is similar to electric charge.
1103608
Magnets are not a "healing tool"!. This was proven by Benjamin Franklin a loooooong time ago, but the myth still persists!\n\nMagnetic resonance imaging can be used to confirm the presence of a neuroma, but anyone who claims they can treat one with magnetism or accupressure is a sick charlatan who just wants your money. Shame on them!\n\nI believe your best options are surgery or management, depending of the severity of the symptoms.  \n\nYou wouldn't trust an Herbalist or a witch Doctor to fix your car, would you?\n\nFollow your physician's recommendations!
589391
Unlike Audio and Video Tapes, which are magnetic recordings, CDs and DVDs are optical recordings - and will not be affected by a magnet. \nBut, if the magnet has a rough surface which is in contact with the recorded side of the CD or DVD, then it can cause abrasions - which would affect their quality - but not 'ruin' them completely !
359816
http://www.vrml.k12.la.us/mike/Intech2/learning_about_magnets.htm\n\nCHECK IT OUT
940973
On a lighter note...I would love to be able to answer your question, but this computer keeps hanging!!!\n\nSorry, but I couldn't resist that one! On a more serious note, there is no doubt in my mind that very little is truly understood about the electrical and / or magnetic effects of some people. I must confess that I do not suffer from such experiences, however I do know people who do.\n\nFinally, just imagine all the people who are trying to reply to you but they can't get close enough to a computer!