Year 12 Hsc Physics Research And Analysis Assignment

Furthermore, X-ray of higher energy than required for imaging is used for radiation therapy. The radiation therapy makes use of ionization radiation (and no images) for the treatment of diseases, such as

- Even though the X-ray expose patient to harmful radiation it is used to see inside the human body and diagnose broken bones, gallstones and later tuberculosis.

I. Ordinary X-rays are used to diagnose many conditions and can be used to see a variety of things in the body,

1895 – X-rays were discovered accidentally by physicist Wilhelm Conrad Rontgen. Rontgen was working on a experiment and testing whether cathode rays could pass through glass. He noticed that a nearby tube emitted fluorescent glow of crystals. The air in the tube was released, high voltage applied, the same tube emitted a fluorescent glow. When Rontgen covered the tube in a heavy black paper, a green light could be seen. He concluded that a new light ray was being broadcast. Rontgen discovered that the light was very powerful and the same ray could pass through human tissue, but not through bones and metal objects. Medical applications were soon to follow. ("History of radiography," )

X-rays are used to guide tubes or cameras through the body. It is used to look at the heart, lungs, and chest walls. They can also be used to rule out any other conditions that might be causing the weaknesses.

The backscatter X-ray machines are much weaker than the machines that are being used in the hospitals by the doctors. The rays of backscatter X-ray machines do not go through the flesh of the body. It will only penetrate the clothing and almost an inch into the body where the tissues in the body will scatter and reflect the rays back to the sensor.

→ An X-ray is an imaging test that uses small amounts of radiation to produce pictures of the organs, tissues, and bones of the body. When focused on the chest, it helps to spot abnormalities or diseases in the lungs.

They can play crucial part in determining what can be wrong with a patient. The first X-ray was discovered in 1985 by Wilhelm Roentgen, a German scientist (Cite-radiology history). X-rays are described as “electromagnetic energy waves that act similarly to light rays, but at wavelengths approximately 1,000 times shorter than those of list” (German scientist discovers x-rays). The first X-ray was in use during the Balkan war. During this time in 1897, they used the X-ray to determine if there were any bullets in the soldiers, or to find if they had any broken bones. Although the X-ray was found very helpful, scientist later started to discover the effects that the radiation could have on the patient. The event that caused the entire scientist community to raise concern. They realized that the effects of X-ray could cause patients to end up with burns and possibly cancer. After several reports of burns and the death of Clarence Dally (due to cancer form working with X-ray), these events raised concern for many. Scientist and doctors became aware of the risk X-rays imposes, and started to take precautions to protect them and the patients. Thanks to this discovery, many patients and x-ray technicians now are required to wear lead aprons. These aprons help protect against the radiation x-rays give off. The technician also have to wear a dosimeter. A dosimeter measures the amount of radiation the technician receives while

The effects of radiation can be hazardous to any part of the human body. In this guide I will explain the advantages, and disadvantages of x-ray radiation. I will also discuss the technological advances that we have today then of what we had the past on the human body during radiation exposure. I will explain preventions of exposure and safety precautions that we as dental assistants as well as patients can follow to stay safe.

Many people don't know that X-rays emit radiation. Radiation is dangerous in large quantities, and this has led many people to think negatively and has caused concern over these scans. After hearing a presentation on the dangers of X-rays, I decided to look further to better understand the impact of X-rays on the human body. I will focus on where radiation comes from, on how much is safe and on the impact of X-rays on the human body.

Since the technologies being used only bounce waves of the body surface, this leaves then skin highly exposed to concentrated amounts of radiation. Health side effect studies of full body scanners have been labeled classified and inaccessible to the general public. Four professors from the University of California- San Francisco, whom are well respected cancer, X-ray crystallographers and imaging experts stated in a letter to the Obama administration that, “The low-energy rays do a “Compton scatter” off tissue layers just under the skin, possibly exposing some vital areas and leaving the tissues at risk of mutation. When an X-ray Compton scatters, it doesn’t shift an electron to a higher energy level; instead, it hits the electron hard enough to dislodge it from its atom.” The authors note that this process is “likely breaking bonds,” which could cause mutations in cells and raise the risk of cancer (Johnston). Furthermore, the UCSF researchers write in their letter, “older passengers are more susceptible to mutagenic effects of X-rays, and “the risk of

They say the low level beam does deliver a slight dose of radiation to the body but because the beam concentrates on the skin, one of the most radiation-sensitive organs of the human body, that dose may be up to twenty times higher than first estimated. University of California biochemist David Agard is quoted saying “While the dose would be safe if it were distributed through the volume of the entire body, the dose to the skin may be dangerously high.” He adds, “Ionizing radiation such as the X-rays used in these scanners have the potential to induce chromosome damage, and that can lead to cancer.”

With this stability and mass production, x-rays machines became very common everywhere. From large factories, to doctors offices, all the way to the corner store of small towns, where children and adults alike could insert a coin into a machine and view the bones in their feet. (3.) Because of their relative adolescences in the world, not much was known about x-rays or their effects on the human body. The first theories about the rays’ effects on the human body were that they had beneficial applications. With this being the only theory about their effect, widespread use went on, unmonitored, and unregulated. This unregulated use led to injuries but because of their slow onset the injuries were never attributed to x-rays. While some scientists tied certain skin burns to over exposure of x-rays it wasn’t until popular minds of the world like Thomas Edison, Nikola Tesla and William J. Morton expressed that they experienced eye pain when dealing with the rays for extended periods of time that people began to connect the dots and understand the negative

For decades, the effects of radiation has been studied by doctors around the world. X-rays are used in the medical and dental field to take radiographs of certain parts of a person's body. Some have become concerned of the long term and short term effects of having x-rays taken because of the radiation that is exposed. Since the rise of concern, studies have been done to find any type of link between cancer and radiation from x-rays. Specifically, in dental x-rays, researchers have been performing studies trying to prove that radiation from x-rays in the dental office can cause cancer .

It is a very high-energy radiation that has the ability to demolish abnormal cells in the body and stop its spread, such as x-rays, electron beam ,proton , or gamma rays .