of the day. Whether the challenges are mental or purely physical. We have found more

efficient, safer, and easier ways of doing the tasks we may face. From moving cargo, to

sending information via the Internet. Probably the greatest accomplishments we have

made, are in the studies of medicine/treatment. And to be specific, the study of radiology.

Radiology, the process of working and viewing inside the human body without breaking the skin. By using radiant energy, which may take the form of x rays or other types of radiation, we are able to diagnose and treat many diseases and injuries. Both diagnostic and therapeutic radiology involve the use of ionizing radiation ( Beta, Alpha, Gamma, and x rays), with the exception of the MRI, which uses a magnetic field rather then radiation.

Radiology is classified as being either diagnostic or therapeutic. Diagnostic radiology is an evaluation of the body, by means of static or dynamic images or anatomy, physiology, and alterations caused by injury or disease. A majority of these pictures are formed by passing a low or high level of x rays through the part of the body being examined, produ

cing the static image on film. This image is called a radiograph or x ray picture. The image it's self may have many forms. It could be a common radiograph, such as a chest x ray; a tomograph (Greek for "section"), which is a radiograph obtained by timing the x ray exposure to correspond with the movement of the x ray tube and film in opposite directions around the plane of the body; or, finally, a computerized axial tomography (CAT or CT) scan. Which is a computer analysis of a sharply limited, thin x ray beam passed circumferentially through an area of the body, giving the doctor of Technician a cross-sectional image. Much like that of slicing a loaf of bread into sections.

In current practice, the MRI is preferred for diagnosing most diseases of the brain and central nervous system. And is the best diagnostic technique we know. It's images, information, and other vital information surpass that of its relatives the CAT scans, x rays, PET scans, etc. The MRI has yet another distinguishing feature it can determine between soft tissue in both normal and diseased states. The only drawback to the MRI is that is relatively expensive (~$2,000 dollars session), but that may not be so bad when you account for all the money and time you save by getting treatment and diagnosis sooner. Because the MRI uses no radiation what-so-ever the only risk it presents is to people who have one or more of the following: A pacemaker, neurostimulator, implanted electrodes, pumps, or electrical devices, diabetic insulin pumps, aneurysm clips, shunt, seizures, heart bypass surgery, abdominal injuries, eye prosthesis, hearing aid, dentures, middle ear prosthesis, metal mesh, wire sutures, war injuries or gunshot wounds, other known metal fragments in head, eye, or body, known possible pregnancy, IUD's, penile prosthesis, joint or limb replacement, fractured bones treated with metal rods, plates, pins, screws, nails, or clips, any other for of prosthesis, permanent eye liner, wig, or make-up with metallic fragments.

The idea of radiation therapy is that normal tissues have a greater ability to recover from the effects of the radiation more so then tumor and tumor cells. Thus, a radiation dose sufficient to destroy tumor cells will only temporally injure adjacent normal cell. And if the ability of normal tissue to recover from a given amount of radiation is known to be the same as or less then that of the cancer tissues, the tumor is described as being radio-resistant. Such forms of therapy are not considered an appropriate form of treatment.

Some common words found in the essay are:
Resonance Imaging, CAT CT, Therapeutic Radiology, Hodgkin's Disease, Alpha Gamma, Internet Probably, , Felix Bloch, radiation therapy, ionizing radiation, dynamic images, therapeutic radiology, MRI MRI, radiation dose, diagnostic therapeutic, tumor cells, magnetic field, 1000 kv, diagnostic radiology,
Approximate Word count = 1954
Approximate Pages = 8 (250 words per page double spaced)