Physics and Radiobiology of Nuclear Medicine

Chapter 6

15. (a) 7.32 HVLs
    (b) 8 HVLs


16. 10 HVLs


17. 2.31 cm


18. 2 mm

Chapter 8

8. (a) 25%
   (b) 50%


9. 61.4%

Chapter 9

5. (c) 1911 counts/cm^2

Chapter 10

6. (e) 0.35

Chapter 12

14. 0.84 cycles/cm

Chapter 14

1. 36,541 rad (365.4 Gy)


2. 350 rem (3.5 Sv)


3. 18,144mCi·hr


4. 1.06 × 10 −^2 rad/mCi·hr


5. 1.2 rad (1.2 cGy)


6. 75.5 rem (0.76 Sv)

Chapter 16

4. (a) 0.5 R/hr
   (b) 6.96 mm Pb


5. 1.77 mm Pb


6. 10%

Appendix C Answers to Questions

Chapter 2

3. 81.3%


4. 130 keV

Chapter 3

1. (a) 1.11 × 1015 atoms
   (b) 0.24mg


2. (a) 4.75 × 1014 dpm
   (b) 216 Ci or 7.99 × 1012 Bq


3. 6.97 hr


4. (a) 429 mCi (15.9 GBq)
   (b) 120.7 mCi (4.46 GBq)


5. 25.5 hr


6. 4.03 days


7. 6.4 mCi (237 MBq)


8. 330 min


9. 63%


10. 1.32 hr


11. N/2


12. 143.6 mCi (5.3 GBq)


13. 11 hr

Chapter 4

3. (a) 1707 ±13.8 cpm
   (b) 1647 ±14.9 cpm


4. 40,000 counts


5. 3 standard deviations


6. 1111 counts


7. 90%

Chapter 5

8. 570.6 Ci (21.1 GBq)


9. 8.92 mCi (330 MBq)

307