Task Front bed sheet
BTEC Nationwide Extended Degree or diploma in Used Science
Medical Physics Techniques
Assignment Amount: 4
Radiotherapy and radiosurgery & Light Protection
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Grading Criteria Obtained
Clarify the principles and effects of radiotherapy and the tools used.
Clarify how extreme exposure to light can cause damage.
Evaluate a number of remedy techniques, types of the radiation available and the equipment applied.
Functional abilities Literacy Level 2
Speaking and listening
offering the result of analysis into chosen areas
researching chosen industrial applications from an array of sources
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BTEC Countrywide Extended Degree or diploma Applied Scientific research
Unit twenty Medical Physics Techniques
Task 4 Radiotherapy and radiosurgery and Rays Protection
1 . Use this diagram to explain how a LINAC functions:
Electron gun is emitting electron column through thermionic emissionjust the same as the X-ray tube. The bad particals are more rapid to a velocity close to the lumination along with an evacuated tube and in order to generate an X-ray light, the bad particals are being deflected generally speaking to 90o via electromagnets to hit the prospective. The electrons quickly lessen their rate, giving up their particular energies to high-energy X-radiation because the electron energies included are so higher compared to X-ray tube. A transmission goal is used whereby X-rays are being made out of the lengthy side from the target and directed into the patient. A computer-controlled gantry and treatment couch guarantee any treatment position, whereas a dose monitor is used to measure the cumulative medication dosage and to stop the device at the appropriate period.
b) Offer two differences between this machine plus the cobalt 70 machine.
Instead of using high energy X-ray beams cobalt-60 machine uses y-rays from a radioactive resource that could be aimed as well as LINAC into a patient to treat a cancer.
A great attention should be delivered to protect the high-activity cobalt source of almost all time because it decays spontaneously and can not be switched off in comparison to LINAC.
c) Look at the next photographs of two types of brachytherapy. Explain the main highlights of each type such as the type of treatment and the likely sources employed.
Cervical the process
Prostate the process
Cervical brachytherapy is manufactured by specially made hollow tubes called " applicators" that are inserted within the womb or perhaps vagina. Throughout the treatment, a machine is employed to place the radioactive material inside the applicator device and once the procedure is over the machine takes back again radioactive materials and the applicators is eliminated. The brachytherapy could be provided into two different treatments(high or low dose rate treatment). With the bothtreatments a same medication dosage of radiotherapy and radiosurgery is given, while for over a different time. Excessive dose level treatment is given for a short period of time, whereas low dose are given for longer period of time. Small radioactive seed of Iodine-125 could be injected where the growth is located plus they are left inside to release their particular radioactivity...
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