dose calculation

1. ~mlk~ | 1
PAEDIATRIC DOSE CALCULATION
A. Dose calculation related to age:
1. Young`s rule
2. Dilling`s rule
3. Fried`s rule
B. Dose calculation related to age:
1. Clarke`s rule
C. Dose calculation related to body surface area.
A. DOSE CALCULATION RELATED TO AGE
1. Young`s rule
𝐶𝑕𝑖𝑙𝑑`𝑠 𝑑𝑜𝑠𝑒 =
𝐴𝑔𝑒 (𝑦𝑒𝑎𝑟)
𝐴𝑔𝑒 𝑦𝑒𝑎𝑟 + 12
× 𝑎𝑑𝑢𝑙𝑡 𝑑𝑜𝑠𝑒
2. Dilling`s rule
𝑐𝑕𝑖𝑙𝑑`𝑠 𝑑𝑜𝑠𝑒 =
𝐴𝑔𝑒 (𝑦𝑒𝑎𝑟)
20
× 𝑎𝑑𝑢𝑙𝑡 𝑑𝑜𝑠𝑒
3. Fried`s rule
𝐶𝑕𝑖𝑙𝑑`𝑠 𝑑𝑜𝑠𝑒 =
𝐴𝑔𝑒 (𝑚𝑜𝑛𝑡𝑕)
150
× 𝑎𝑑𝑢𝑙𝑡 𝑑𝑜𝑠𝑒
B. DOSE CALCULATION RELATED TO BOGY WEIGHT
Clarke`s rule
𝐶𝑕𝑖𝑙𝑑`𝑠 𝑑𝑜𝑠𝑒 =
𝐵𝑜𝑑𝑦 𝑤𝑒𝑖𝑔𝑕𝑡 𝑙𝑏
150
× 𝑎𝑑𝑢𝑙𝑡 𝑑𝑜𝑠𝑒
𝐶𝑕𝑖𝑙𝑑`𝑠 𝑑𝑜𝑠𝑒 =
𝐵𝑜𝑑𝑦 𝑤𝑒𝑖𝑔𝑕𝑡 (𝑘𝑔)
70
× 𝑎𝑑𝑢𝑙𝑡 𝑑𝑜𝑠𝑒
*1kg = 2.2 lb

2. ~mlk~ | 2
C. DOSE CALCULATION RELATED TO BODY SURFACE AREA
𝐶𝑕𝑖𝑙𝑑 𝑑𝑜𝑠𝑒 =
𝐶𝑕𝑖𝑙𝑑`𝑠 𝑏𝑜𝑑𝑦 𝑠𝑢𝑟𝑓𝑎𝑐𝑒 𝑎𝑟𝑒𝑎
∗ 𝐴𝑣𝑒𝑟𝑎𝑔𝑒 𝑎𝑑𝑢𝑙𝑡`𝑠 𝑏𝑜𝑑𝑦 𝑠𝑢𝑟𝑓𝑎𝑐𝑒 𝑎𝑟𝑒𝑎
× 𝑎𝑑𝑢𝑙𝑡`𝑠 𝑑𝑜𝑠𝑒
*An average adult`s of 70kg, 175cm has a body surface area of 1.85m2
.
Child`s body surface area obtained from nomogram that determine body surface area using the
height (cm or in) and weight (kg or lb) of the child.

3. ~mlk~ | 3