imageology activity for rad.biology.pptx

Radiation biology

1. Identify the pictures RADIATION BIOLOGY

2. Short term effects Seen within minutes, days or weeks Large amount of radiation absorbed in a short time. Eg :- acute radiation syndrome

3. CHERNOBYL – ?? EXPLAIN THE EFFECT WITH REASON ??

4. Thirty people at Chernobyl experienced the long term effects of radiation long term effects appear after years, decades or generations small amount of radiation absorbed repeatedly over a long period Eg :- birth abnormalities, genetic defects

5. Explain the effect?

6. RADIATION CARIES

7. Explain the effect?

8. Effects of radiation on bone Depletion of osteoblasts - Increased osteoclastic resorption of bone Reduced bone rebuilding potential + Progressive endarteritis - reduction of blood flow through the Haversian and Volkmann’s canals = OSTEOPOROSIS OSTEORADIONECROSIS

9. Can Cockroaches Really Survive A Nuclear Explosion?

10. Cockroaches’ ability to withstand extreme radiation exposure is due to the simple design of their bodies and slower cell cycles.

11. IDENTIFY THE METHOD OF RADIATION PROTECTION IN THIS PICTURE ??

12. RECTANGULAR Restricts the size of an xray beam to an area slightly larger than size 2 introral film, reduces patient exposure.

13. IDENTIFY THE METHOD OF RADIATION PROTECTION IN THIS PICTURE ??

14. FAST FILM Most effective method of reducing a patients exposure to x radiation. TYPES: A B C D E F F-SPEED FILM OR INSIGHT E-SPEED FILM/ EKTASPEED

15. IDENTIFY ?

16. Pocket dosimeter: Provides immediate reading after exposure to x-rays or gamma rays