Dosage and total Energy from radioactive medicine.

In summary, the conversation discusses a patient ingesting a radioactive pharmaceutical as part of a treatment program. The medication contains P32,15 and emits beta rays with an energy of 1.50. The half-life of the medication is 14.28 and the initial activity is 1.34. The conversation then goes on to discuss Part A, which asks for the number of electrons emitted over a period of 7.00 days. Part B asks for the total amount of energy absorbed by the patient's body in 7.00 days, assuming the beta rays have an energy of 705 keV. Finally, Part C asks for the absorbed dosage in rem, assuming 110 grams of tissue are exposed to the radiation. The
  • #1
NickMcCartney
3
0
I can't seem to get this started in the right direction. Any help is appreciated.

As part of a treatment program, a patient ingests a radioactive pharmaceutical containing P32,15, which emits beta rays with an of 1.50. The half-life of is 14.28 , and the initial activity of the medication is 1.34 .

Part A
How many electrons are emitted over the period of 7.00 days?

Part B
If the rays have an energy of 705 keV , what is the total amount of energy absorbed by the patient's body in 7.00 ?

Part C
Find the absorbed dosage in rem, assuming the radiation is absorbed by 110 grams of tissue.
 
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  • #2
Here is what I have done so far.

Part A.

Converted half life (T 1/2) into seconds. = 1.234e6 s
Found the decay constant (lambda) = ln(2)/1.234e6 = 5.617e-7
Found N0 (nuclei present at t=0) = R0/lamda = 2.386e12
Found N= A-Z = 32-15=17

Tried to plug into equation: N=N0e^(-(lambda)(t)) where I put the 7 days (in seconds) into t which came out to 1.7e12, which was wrong. I don't know where to go from here.
 
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What is the purpose of calculating dosage and total energy from radioactive medicine?

The purpose of calculating dosage and total energy from radioactive medicine is to determine the appropriate amount of medicine to administer to a patient and to ensure that the patient receives the correct amount of radiation for their condition. This helps to minimize potential side effects and maximize the effectiveness of the treatment.

How is dosage and total energy calculated for radioactive medicine?

Dosage and total energy from radioactive medicine are calculated by taking into account the specific activity of the radioactive substance, the duration of exposure, and the tissue-specific factors of the patient. The formula for calculating dosage is: D = A x t x TF, where D is the dosage, A is the specific activity, t is the duration of exposure, and TF is the tissue factor.

What factors can affect the dosage and total energy from radioactive medicine?

Some factors that can affect the dosage and total energy from radioactive medicine include the type and strength of the radioactive substance, the route of administration, the patient's body weight and composition, and any pre-existing medical conditions. It is important for the physician to consider all of these factors when calculating the appropriate dosage.

How is the dosage of radioactive medicine measured?

The dosage of radioactive medicine is typically measured in units of gray (Gy) or sievert (Sv). Gray is a unit of absorbed dose, which measures the amount of radiation energy absorbed by a specific tissue, while sievert takes into account the tissue-specific effects of different types of radiation. Both units are used to determine the appropriate dosage and total energy for a patient.

What precautions should be taken when working with radioactive medicine?

When working with radioactive medicine, it is important to follow all safety protocols and procedures to minimize exposure to radiation. This may include wearing protective clothing and equipment, working in a shielded area, and properly disposing of any radioactive waste. It is also important to regularly monitor radiation levels and to limit the amount of time spent near the radioactive substance.

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