Non-Invasive Diagnostic Techniques

Non-Invasive symptomatic techniques X-rays An X-ray machine is essentially a camera. Instead of visible light, however, it uses X-rays to imperil the film. X-rays are like light in that they are electro magnetic waves, only if they are more energetic so they can penetrate more materials to varying degrees. When the X-rays hit the film, they expose it just as light would. Since bone, fat, muscle, tumors and former(a) masses all absorb X-rays at different levels, the image on the film lets you see different (distinct) structures inside the body because of the different levels of icon on the film. Ultrasound Ultrasound or ultrasonography is a medical checkup imaging technique that uses high frequency sound waves and their echoes. The technique is akin(predicate) to the echolocation used by bats, whales and dolphins, as well as asdic used by submarines. Thermography magnetic resonance imaging magnetic resonance imaging scanners vary in size of it and shape, and some newer mode ls have a greater degree of openness nigh the sides. Still, the basic design is the same, and the tolerant is pushed into a tube thats only somewhat 24 inches (60 centimetres) in diameter.The biggest and most important component of an MRI governing body is the magnet. There is a horizontal tube the same one the patient enters running through the magnet from front to back. This tube is known as the bore. But this isnt just any magnet were dealing with an incredibly difficult system here, one capable of producing a large, stable magnetic field. The efficiency of a magnet in an MRI system is rated using a unit of peak known as a tesla.Another unit of measure commonly used with magnets is the gauss (1 tesla = 10,000 gauss). The magnets in use today in MRI systems create a magnetic field of 0. 5-tesla to 2. 0-tesla, or 5,000 to 20,000 gauss. When you realize that the Earths magnetic field measures 0. 5 gauss, you can see how powerful these magnets are. Most MRI systems use a su perconducting magnet, which consists of many coils or windings of wire through which a current of electricity is passed, creating a magnetic field of up to 2. 0 tesla.Maintaining such a large magnetic field requires a skinny deal of energy, which is accomplished by superconductivity, or reducing the resistance in the wires to almost zero. To do this, the wires are continually bathed in liquid atomic number 2 at 452. 4 degrees to a lower place zero Fahrenheit (269. 1 below zero degrees Celsius) source Coyne. This cold is insulated by a vacuum. While superconductive magnets are expensive, the potent magnetic field allows for the highest-quality imaging, and superconductivity keeps the system economical to operate.