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Radiology Humanity, constantly learning, growing, and facing more challenges each second 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, producing 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. Other images may be obtained by using ultrasound or MRI, or by recording the activity of isotopes internally administered and deposited in certain parts of our body. This practice is called nuclear radiology or nuclear medicine. This include such techniques as a PET scan, or positron emission tomography, which uses patterns of the positron decaying to study metabolism reactions in the body. PET requires a cyclotron as an on-site source of short-lived, po... ... middle of paper ... ...ment of choice in most cases of cancer of the skin; in certain stages of cancers involving the cervix, uterus, breast, and prostate; and in some types of leukemia and lymphoma, particularly Hodgkin's Disease. In such instances, radiation therapy is intended to effect a cure. But when is use with cancer-treatment drugs it may only pose as a relief of symptoms. Radiation therapy is commonly used before and after surgical removal of certain tumors, in order to provide a better chance of cure. 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. Well, as you can see radiology is a field of study that deserves our uttermost attention. For the future of humanity may one day totally rely on these processes.

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