Rank these three types of radiation by their ability to penetrate this page of your book, from greatest penetration to least. a. Alpha particle. b. Beta particle. c. Gamma ray.

A person faces the possibility of receiving the following absorbed doses of radiation: 30 rad of X rays (RBE = 1), 5 rad of protons (RBE = 32), and 7 rad of alpha particles (RBE = 20). Which radiation will produce the least biological damage? a) the X-rays b) the alpha particles c) the protons d) They will produce the same damage.

5.Match each type of radiation with its properties. 1.can penetrate paper but not a sheet of metal such as aluminum foil 2.can travel no more than a few centimeters in air and cannot penetrate a piece of paper or human skin 3.can penetrate many materials but not concrete or lead a. gamma radiation b. beta radiation c. alpha radiation

You suspect that a patient’s arm is broken. What type of radiation might help you find out?

1. Find the radiation dose, in grays, for each of the following a. A 5.5-mSv fluoroscopic x-ray series, with a relative biological effectiveness of 1.  b.  45 mSv of skin exposure by an α emitter, with relative biological effectiveness of 20.  c. 148 mSv of β– and γ rays from the 40K in your body, both of which have a relative biological effectiveness of 1.  [please answer all parts to the question]

1. A person with lymphoma recieves a dose of 35 gray in the form of gamma radiation during a course of radiotherapy. Most of this dose is absorbed in 18 grams of cancerous lymphatic tissue. a. How much energy is absorbed by the cancerous tissue? b. If the treatment consist of five 15 minutes session per week over the course of 5 weeks and just one percent of the gamma Ray beam are absorbed, what is the power of the gamma ray beam? c. If the gamma ray beam consist of just 0.5 percent of the photons emitted by the gamma source each of which has an energy of 0.3MeV, what is the activity in curies of the gamma ray source?

QUESTION 38 Rank the following procedures from lowest effective radiation dose to highest. The first choice should have little to no radiation and the last choice should have the highest radiaiton exposure. MRI of the brain extremity x-ray (ex. hand) full spine x-ray (cervical, thoracic, AND lumbar series) PET/CT fusion of the abdomen and pelvis

The table gives the data the scientist obtained when she tested 1 kg of cooked A scientist has compared the vitamin content of food exposed to gamma radiation (c) with food that has not been exposed. chicken. Food not exposed to gamma radiation Food exposed to gamma radiation Vitamin Mass in milligrams Mass in milligrams B6 1.22 1.35 B12 21.00 28.00 E 3.30 2.15 Niacin 58.00 55.50 Riboflavin 2.10 2.25 Considering only this data, which one of the following is a correct conclusion? Put a tick (v) in the box next to your answer. Vitamin content is not affected by gamma radiation. Gamma radiation completely destroys some types of vitamin. Exposure increased the content of some types of vitamin. (1) (Total 6 marks)

58. . Radiation treatment of prostate cancer. In many cases, BIO prostate cancer is treated by implanting 60 to 100 small seeds of radioactive material into the tumor. The energy released from the decays kills the tumor. One isotope that is used (there are others) is palladium (10°Pd), with a half-life of 17 days. If a typical grain contains 0.250 g of 10°Pd, (a) what is its initial activity rate in Bq, and (b) what is the rate 68 days later?

3. A 100kg sample of Neptunium 234 (Np234) was accidentally released due to the gross negligence of Jerf, the worst nuclear engineer ever. A. Jerf plans to act as though nothing happened until 95% of the sample has decayed into other elements. How long will they have to keep waffling about pretending to do experiments? (hint: Wikipedia knows the half-life of (Np234)) B. After two weeks, Jarrison, Jerf's supervisor, notices Jerf has had a minor decrease in productivity and decides to confront Jerf. Realizing their jig is up, Jerf decides to eat as much as they can before Jarrison notices. Assuming they eat 5 kgs of Np 234, how much is left for Jarrison to find? C. Following this incident, Jarrison, along with the EPA, makes a graph detailing the amount of Np 234 in Jerf's lab. Draw this graph and label all important events. Do not include the amount of Np234 that Jerf ingested, as a serendipitous genetic immunity to radiation Jerf inherited is the only reason they did not succumb to…