mYP Year 2 Science Summative Assessment UNIT: ATOMIC STRUCTURE AND THE PERIODIC TABLE
Sarah Wulff Khan 7A Radioisotopes
What is an isotope? Isotopes are atoms of the same element that have a different number of neutrons but the same number of protons and electrons
What is radioactive? Emitting (produce and discharge) (something, especially gas or radiation).or relating to the emission (the production and discharge of something) of ionizing radiation or particles.
What are radioisotopes?
Radioisotopes (a radioactive isotope.) in Medicine Nuclear medicine (the branch of medicine that deals with the use of radioactive substances in research, diagnosis, and treatment) uses radiation (the emission of energy as
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Tens of millions of nuclear medicine procedures are performed each year, and demand for radioisotopes is increasing rapidly.
Sterilization of medical equipment is also an important use of radioisotopes.
Radioisotope therapy brings radiation directly into the cancer cells. Normally you are supposed to be given the radioisotope or radionuclide (a radioactive nuclide) usually as a capsule, drink or injection directly into a vein. Your cancer cells absorb the radioactive substance more than normal cells. This means they receive a higher Quantity of radiation, causing them to die!
There are a lot of different types of radioisotope treatments depending on what type of cancer you have!
There is:
Iodine-131 is used to treat certain types of thyroid cancer and some other rarer types of cancer. You may need to stay in hospital for this treatment.
Strontium-89 and samarium-153 is used to treat some types of secondary bone cancer (Secondary cancer in the bone is the result of cancer cells spreading to the bone from a primary tumor somewhere else in the body). Strontium can help reduce
In vitro: Previous study found that the exposure of the tumor cell lines to 3-AP before or immediately after irradiation resulted in an increase in radiosensitivity. In contrast, 3-AP could enhance the radiosensitivity of the normal fibroblast cell line only when the exposure was before irradiation. There were no consistent differences between cell lines with respect to the expression of the RR subunits. Whereas
__Isotopes__ are different versions atoms of the same element with a different number of neutrons and different atomic masses. The whole numbers on the isotopes (superscript on the upper left side of the elements) are rounded to the nearest whole number of the mass that is indicated beside the element in the tables. When we see the atomic masses of elements in the periodic table, these are actually the averages of the atomic masses of their different isotopes. Isotopes of an element have different natural abundances, as shown in the tables below. The __natural abundance__ indicates the percentage of the isotope that is naturally found on the planet.
Where as, electrons are negatively charged(Doc.3).The neutron is the dense middle of the atom(Doc.3). The protons and neutrons in the atom are in the nucleus(Doc.3). However, the electrons preside in electron clouds outside the nucleus(Doc.3). To sum up, an atom is a small structure that defines what an element is and
Identify the best radiological evaluation method for any of the following: Impingement syndrome, rotator cuff tear, and biceps tendon tear. Each diagnostic modality has a particular feature in diagnosing the shoulder lesions such as impingement syndrome, rotator cuff tear, and tear of the biceps tendon of a human musculoskeletal system and its surrounding structures. Ultrasound (US) US is the most efficient imaging method for detecting the shoulder impingement caused by calcified bony deposits, irregularities or abnormalities of the bursa and surrounding structures (Ostlere, 2003). Based on the eighty-two eligible meta-analysis articles conducted by Roy et al.
Various levels are available in electron mode. Therac-25 was enclosed in a room of radiation treatment in order to avoid unnecessary exposure of radiation on individuals who works near the machine. And through visual and audio monitors located in the treatment room the Machine operator has contact with the patient at that time. The
As radiation dose increases, the cancer risk increases in a fairly predictable manner.” (Karam, 2005). Some specific isotopes pose a health risk. The biological processes tend to concentrate certain chemicals in certain organs. A Nuclear explosion would complicate issues not only due to the explosion, but the wounds caused and later fallout issues.
Non-ionising is found at the end of a long wavelength where as ionising radiation is found at shorter wavelength. Regions of the spectrum: • Gamma radiation- ionizing • X-ray radiation- ionizing • Ultraviolet radiation- non-ionizing • Infrared radiation- non-ionizing • Microwave radiation- non-ionizing • Radio waves- non-ionizing 3- A) Lethal Dose Effects 5-20 Possible late effects; possible chromosomal damage 20-100 Temporary reduction in white blood cells 100-200 Mild radiation sickness within a few hours:
Too much exposure to ionizing radiation can damage the tissues. Children, young women and fetus are more sensitive to this type of radiation than others (Fahey, 2012). • Maintaining the Highest Level of Safety with NM Workers in nuclear medicine should follow safety rules. While working with radioactive materials, personal protective equipment like gloves, protective eye wear and cloths and in some cases fume hoods must be used. NM procedures must be practiced in special closed places.
Henrietta’s tumor was treated with radium, which was a white radioactive metal that glows blue. It destroys any cells that it comes into contact with and can burn the skin off a person’s body at high doses. Dr. Lawrence Wharton Jr. dilated Henrietta’s cervix and prepared to treat her tumor, but first shaved off a piece of tissue from her tumor and a piece from her healthy cervical tissue. After the procedure was finished, a resident took the samples to Gey’s
Chemotherapy is a drug treatment that uses chemicals to kill cancer cells. The drugs are most often given through a vein, after that the chemotherapy chemicals travel throughout your body. It can also help people with bone cancer that has spread beyond the bone to other areas in the body. Radiation therapy is also an option. Radiation therapy uses high-powered beams of energy to kill cancer cells.
Radiologists use a variety of imaging such as X-ray radiography, ultrasound, computed tomography, nuclear medicine including positron emission tomography, and magnetic resonance imaging to diagnose diseases. Interventional radiology is the performance of medical procedures with the guidance of imaging
1. The ethical issues and concerns raised by this case are; The first ethical issue was killing the baboon to proceed with the transplant. The second concern raised was having angered animal’s rights activists.
Dental radiographs are important tools in the diagnosis of oral diseases. It helps the dentist to employ appropriate treatment regimen for patient’s dental conditions, and plays a continual important role in dental practice. Radiation dosage from such dental radiographs are low and are thought to present minimal risk (Enabulele & Igbinedion, 2013) The radiation protection is the science and art of protecting people and environment from the harmful effects of ionizing radiation.
Cancer makes a person race against the clock for their life. This life threatening disease requires serious medical treatment to control. One of the first questions people diagnosed cancer always want answered is the options for treatment. Two common treatments for most types of cancer are chemotherapy and radiation. Even though there are distinct differences in administration and side effects of these treatments, chemotherapy and radiation are similar in purpose, fighting cancer.
Uranium has several isotopes, but the isotope uranium-235 is the most notable isotope of uranium in the field of nuclear energy. It is highly fissionable and although it is