Backscatter Research Paper

In that way the x-ray help the doctor to know what the real problem in short time.

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.

Backscatter technology to work, it has to emit a small dose of radiation. This is where the

5-X-rays: - 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.

(Initial Blog) Welcome To The New Site For Aventura Dental Center Welcome to our new All of our X-rays are digital, using 90 percent less radiation to get an even more accurate image of your mouth. And we use ViziLite Plus, which uses ultraviolet light to help detect signs of oral cancer.

* Examination of These images call for up to 90% less radiation than with standard film type x-rays. Instead of making use of the traditional silver-oxide x-ray film that must be formulated and then fixed in caustic and ecologically harmful solutions, the new system calls for pictures by way of a small digital sensing unit and it then immediately sends a Image of the tooth on to the video monitor in the treatment room. Therefore, we can easily see your teeth and surrounding components Instantly. Not only does the new digital x-ray do away with the typical wait for x-ray film to be prepared, but it also is highly sensitive, so that patients are exposed to even less radiation than with conventional x-rays.

Medical Physics Research and Analysis Assignment Nathan Chang Year 12 HSC Physics Assessment Task No: 4 X-rays and CAT scans – What they are and how they are produced What X-rays are - Clearly explains what an X-ray is X-rays are electromagnetic waves of very short wavelength and high frequency, in the range 0.001nm to 10nm. Due to their high frequency (therefore meaning high energy), x-rays penetrate flesh and may cause ionization of atoms they encounter. The body tissue absorbs energy and the intensity of the beam is reduced when x-rays pass through the body. Denser material, such as bone, absorbs more X-radiation.

X-rays may be invisible waves found on the electromagnetic spectrum which can almost make their known danger seem of little importance because our five senses cannot measure their activity, however x-rays must not be taken lightly. Radiologic Technologist must keep in mind the dangers and gravity of the force that they are working with on a daily basis. Patients should have the right to their own safety when undergoing a medical procedure that requires the use of x-rays. Radiologic Technologist are the ones responsible for upholding this safety. They can and must do this in variety of ways that include, making sure the patient is knowledgeable about the procedure, using correct collimation to the part under examination, and by shielding the

X-Ray have been around since the late 1890s. It was created and used for medicine. It is an invisible ray that can pass through solid matter. X-Ray was perfect for the use of locating broke bones through the skin of a body. Shortly after it was produced for medicine, the military saw a better fit for the new discovery. They took this invention, and they thought of a new way to use it. Countries cannot produce more soldiers, but they can extend the lives of the soldiers they already have. The advancement of X-Ray was started because of society. People wanting to prevent the deaths of soldiers with bullet wounds. The actors were the military and doctors. Using STS, did the military use X-Ray for profit or health purposes? Also, how the early years of 1900s were important towards X-Ray development?

Another concern that has risen from the body scan security debacle is the potential health risk that the scans may cause to the passengers, especially in cases of frequent fliers, young children, pregnant women, and the security guards that operate the machines. The scanners put out radiation much like the average X ray machines used in doctor’s offices but at much lower levels. This type of X ray scanner is called “backscatter scanners” and scans only detailed images of the outer flesh, not through the skin or showing bones like conventional X rays. Some supporters of the body scanners claim that the amount of radiation emitted by the scans is almost “insignificant” on normal adults (“Experts”). Although adequate testing has still not been completed to determine the full effects of repeated exposure, the concern still remains. Many OBGYN’s urge pregnant women to opt out of the body scans because a developing fetus is so much more sensitive to any potential harm that may be inflicted by the scanners, especially until more research has been completed (“Experts”).

Human Factors in Airport Security Prepared For: Dr. Suzanne M. Dawes ISE Department USC Viterbi School of Engineering Prepared By: Raghav Lakhotia ISE 370 Fall 2014 12/16/2014 Table of Contents Page 1. Introduction 3 2. X-Ray Images 4 3. Screening Enhancements 6 4. Screener Selection and Training 8 5. TIP and CBT 10 6. Procedures, Rules and Social Engineering 12 7. Logistics and Operations 13 8. References 14 INTRODUCTION Airport security A focus on the equipment is most important as it relates to the human-machine interaction (we learnt about this in the HCI project in class, as well as in lab). That is to say, the need is not necessarily for more powerful x-rays but rather x-ray imaging that facilitates screeners’

Magnetic Resonance Imaging (MRI) in the 1970s to 1980s to present day. Has served as a medical imaging technique used in radiology to form detailed pictures of the body for both health and disease. In the MRI scanners, there are strong magnetic fields, radio waves, and field gradients in order to generate images of the inside of the body and appear on a screen. MRI and X-rays are not the same. MRI scans take more time, are louder, and usually require that the body goes into a narrow tube. While X-ray scans take less time, aren’t really loud, and don’t involve a narrow

Computed Tomography imaging also known as CT or a CAT scan, combines a series of x-ray images taken from different angles and uses computer processing to create cross- sectional images also known as slices of the bones, blood vessels, and soft tissue inside the body. The CT scan reveals anatomic details of internal organs that cannot be seen on conventional x-rays. A motorized table moves the patient through a circular opening of the CT scanner known as the gantry which houses the x-ray tube. As the patient passes through the CT system, the x-rays rotates around the opening. A beam of x-rays exposes the patient as the table moves in and out of the scanner in a series of phases. Detectors on the opposite side of the patient record the x-rays exiting that section of the patients’ body. They then produce cross-sectional views or slices. The data is then sent to a computer to reconstruct all of the individual

During the cold winter of 1895, a German scientist by the name of Wilhelm Conrad Roentgen was working with a cathode-ray tube when he noticed nearby crystals were glowing. When Roentgen reached for the crystals he was amazed when the shadow cast on the crystal was not of his whole

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