Dose 2016

Which of the following is a reference condition

Q6

1. Measuring at a point at the equivalent reference depth , field size 10x10cm 2 , SSD=100 cm, in a plastic water equivalent phantom

2. Measuring at a point at the reference depth, field size 20x20cm 2

3. Measuring in a lung equivalent phantom

4. Out axis measures

5. Small field measures

6. None of the above are reference conditions