life of just over 8 days‚ emits beta particles and gamma rays as it decays. This half life is long enough for it to be transported form where it is produced to where it needs to be used but it is also short enough to minimise patients exposure to radiation It decays into non-radioactive gas‚ Xenon 131‚ which can easily escape without interfering bodily functions Beta particles can destroy abnormal tissue. Gamma rays allow external imaging to ensure target has been reached Question 19 (7 marks) Name
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ionizing radiation has on the human body is the appearance of cancer. To treat cancer‚ ironically‚ radiation is often used. Radiation treatment is the 2nd most common form of cancer treatment‚ next to surgery. The National Cancer Institute estimates that over half of all cancer patients receive radiation treatment sometime over the course of their illness (Radiation Therapy and You 2). It can be used alone to fight cancer or can be used in combination with surgery or chemotherapy. Radiation therapy
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Two Examples of Radiation 1. Boundaries A discussion of the regions (or bands or types) of the electromagnetic spectrum is given below. Note that there are no precisely defined boundaries between the bands of the electromagnetic spectrum; rather
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Radiation therapy uses high-energy radiation to shrink tumors and kill cancer cells. X-rays‚ gamma rays‚ and charged particles are types of radiation used for cancer treatment. The radiation may be delivered by a machine outside the body called a linear accelerator to focus x-rays directly on the tumor or tumor bed (external-beam radiation therapy)‚ or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy‚ also called brachytherapy). Systemic
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1. Define land resource surveying methodology. Identify the two approaches in land resource surveying methodology. 2. Discuss the contributions of Aristotle‚ Louise Deguerre‚ Argo‚ Loussedat and Deville in enriching the science of topographic surveying. 3. The atmosphere influences EMR in two ways. Discuss them. 1. According to Professor Masaka (2011) Land resource survey methodology can be defined as the starting point for any natural resource management policy has to be an inventory of
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Energy Transformation Conduction‚ convection‚ and radiation are things that exist in our life. Thanks to that stuff we have things like electricity and things to cook too. I am going to explain things about energy transformation. Heat transfer is the way heat moves through matter to change the temperature of other objects. There are three types of heat transfers‚ Conduction‚ Convection‚ and Radiation. The first kind of heat transfer‚ conduction‚ is heat transferring through direct contact of materials
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Surgery‚ chemotherapy‚ and radiation. Surgery usually happens before the chemotherapy or radiotherapy. Eye Cancer Complications of treatment- It is not always necessary to treat the cancer immediately. Treatment is recommended when the tumor starts to grow or if it may spread to other parts of the body. Due to location of the cancer‚ you may or may not lose your sight. Limitations of treatment- Chemotherapy‚ Cryotherapy‚ External Beam Radiation Therapy‚ Laser Therapy‚ Radiation Plaque Therapy‚ or Enucleation
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INFRARED By Johnny B. English Sr. SFTY 355 - Industrial Hygiene and Toxicology Tim Deak May 29‚ 2013 Thermal radiation also known as infrared which is a form of light that can not be seen‚ we can only see visible light. Infrared gives us information that we would not be able to get from visible light. Because all object gives off some type of heat‚ yes‚ all objects even if the of cold or frozen. Cold or frozen objects only gives off a very small amount of heat‚ but this heat can be detected
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The PET scan‚ or Positron Emission Tomography‚ was born in 1973 at Washington University. It was created by Edward Hoffman‚ Michael M. Ter-Pogossian‚ and Michael E. Phelps; Phelps is most often credited with the invention (History of PET and MRI‚ 2009). In preparation for a PET scan‚ radioactive tracers are injected into the body‚ inhaled‚ or ingested by the patient through a solution that they drink. Then the scan will actually begin‚ as the patient lies on a table‚ which glides into the machine
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Danger of ionising radiation Non ionizing radiation refers to any type of electromagnetic radiation that does not carry enough energy per quantum to ionize atoms or molecules—that is‚ to completely remove an electron from an atom or molecule. Instead of producing charged ions when passing through matter‚ the electromagnetic radiation has sufficient energy only for excitation‚ the movement of an electron to a higher energy state. Ionizing (or ionising) radiation is radiation composed of particles
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