Equation to calculate absorbed dose of radiation?

  • Thread starter Thread starter Littlegirloud
  • Start date Start date
  • Tags Tags
    Radiation
Click For Summary
SUMMARY

The absorbed dose of radiation can be calculated using the formula D = E/M, where D represents the dose in joules per kilogram, E is the energy absorbed, and M is the mass of the tissue. In this case, with an energy absorption of 420 Joules and a tissue mass of 60 grams, the correct calculation is D = 420/0.06, resulting in an absorbed dose of 7000 J kg-1. It is essential to convert grams to kilograms for accurate results, as radiation dose is conventionally reported in joules per kilogram.

PREREQUISITES
  • Understanding of radiation physics and absorbed dose calculations
  • Familiarity with the formula D = E/M for calculating absorbed dose
  • Knowledge of unit conversions, specifically grams to kilograms
  • Basic grasp of energy measurements in joules
NEXT STEPS
  • Research the concept of radiation dose and its significance in medical physics
  • Learn about different types of radiation and their biological effects
  • Explore advanced calculations involving dose distribution in heterogeneous tissues
  • Study the principles of radiation safety and dosage limits in clinical settings
USEFUL FOR

This discussion is beneficial for students in physics or medical fields, radiation safety officers, and professionals involved in radiation therapy or radiology.

Littlegirloud
Messages
6
Reaction score
0

Homework Statement


Calculate the absorbed dose of radiation for tissue that suffers a mean energy absorbed of 420 Joules in a quantity of tissue that has a mass of 60g.

Homework Equations


This is really my question. No relevant equation is provided in these materials so my independent research (and the data given) suggests I could use D = E/M, but is that the most appropriate?

The Attempt at a Solution


D = E\M
D = 420/60
D = 7
D = 7 J kg-1
 
Physics news on Phys.org
Radiation dose is generally reported in terms of mean energy deposited per unit mass.

You might want to double check the 60 g vs kg though.
 
I've checked again and it is definitely 60 grams. Does that mean I need to equate the tissue dose to kg so it tallies with the final measure?

Perhaps?
D = E\M
D = 420/0.06
D = 7
D = 7000 J kg-1
 
Littlegirloud said:
I've checked again and it is definitely 60 grams. Does that mean I need to equate the tissue dose to kg so it tallies with the final measure?

Perhaps?
D = E\M
D = 420/0.06
D = 7
D = 7000 J kg-1
The final value looks good. I don't know what happened in the second to last line though.
 

Similar threads

  • · Replies 13 ·
Replies
13
Views
1K
Replies
4
Views
2K
  • · Replies 29 ·
Replies
29
Views
4K
Replies
8
Views
2K
  • · Replies 7 ·
Replies
7
Views
4K
Replies
35
Views
6K
Replies
4
Views
5K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K