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ABSORBED DOSE

Physics

ABSORBED DOSE

1. The energy deposited per unit mass (i.e. absorbed radiation per unit mass).

2. Unit is the Gray (J / Kg).

3. Defines the quantity of radiation delivered at a specific point in the radiation field.

4. In nuclear imaging, to estimate absorbed dose: D T = N S * DF, where D T is the dose to the target organ, N S is the number of disintegrations in the target organ, DF is the Dose Factor.

5. KERMA determines => Absorbed Dose determines => Equivalent Dose determines => Effective Dose.


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REFERENCES

1. Bushberg, J. T. (2012). The essential physics of medical imaging. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. Find it at Amazon
2. Heggie, J. C., Liddell, N. A., & Maher, K. P. (1997). Applied imaging technology. Melbourne: St. Vincents Hospital.

Ⓒ A. Manickam 2018

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