Average Dose Rate for 1.11x108 Bq of 131I Injection

In summary, the average dose rate for 1.11x108 Bq of 131I Injection is estimated to be around 0.01 mSv/h, depending on various factors such as distance, duration, and shielding. This level of radiation is considered safe for medical procedures, as it falls within recommended limits. It takes approximately 8 days for the radiation level from 1.11x108 Bq of 131I Injection to decrease by half. Potential health risks include cell and tissue damage, acute radiation sickness, and an increased risk of cancer. The average dose rate can be measured using a dosimeter or calculated using mathematical models.
  • #1
xamy
27
0
A patient receives an injection of 1.11×108 Bq of 131I,30% of which goes to the thyroid, having a mass of 20 g.What is the average dose rate in the organ?

Solution:
D=1.60×10–10AE Gy s–1

A=(1.11x108x(30/100))/20=1.665x106Bqg-1

E=0.192Mev

=1.60x10-10 (1.665)(0.192Mev)

= 51μGy s–1

This is my solution. Can anyone point out the mistake here.
 
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  • #2
This isn't nuclear engineering. I have moved your thread.
 

FAQ: Average Dose Rate for 1.11x108 Bq of 131I Injection

What is the average dose rate for 1.11x108 Bq of 131I Injection?

The average dose rate for 1.11x108 Bq of 131I Injection depends on several factors such as the distance from the source, duration of exposure, and shielding. However, on average, it is estimated to be around 0.01 mSv/h.

Is 1.11x108 Bq of 131I Injection considered a safe level of radiation?

The safety of radiation exposure depends on the amount and duration of exposure. 1.11x108 Bq of 131I Injection is considered a safe level of radiation for medical procedures, as it is within the recommended limits set by regulatory bodies.

How long does it take for 1.11x108 Bq of 131I Injection to reach a safe level of radiation?

The time it takes for 1.11x108 Bq of 131I Injection to reach a safe level of radiation depends on the half-life of the isotope, which is around 8 days for 131I. This means that after 8 days, the radiation level will decrease by half, and it will continue to decrease over time.

What are the potential health risks associated with exposure to 1.11x108 Bq of 131I Injection?

The potential health risks associated with exposure to 1.11x108 Bq of 131I Injection include damage to cells and tissues, which can lead to acute radiation sickness, and an increased risk of developing cancer in the long term. However, these risks are low and can be minimized by following safety procedures during the procedure.

How is the average dose rate for 1.11x108 Bq of 131I Injection measured?

The average dose rate for 1.11x108 Bq of 131I Injection is typically measured using a dosimeter, which measures the amount of radiation received over a certain period. It can also be calculated using mathematical models based on the source strength, distance, and other factors.

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