Last minute learn

Question 1

How is technetium 99m made?

Answer 1

•Drawing sterile saline across decaying molybdenum

Question 2

Six stages of heat removal

Answer 2

•Conduction from target track to rest of anode disk
Radiation from the the anode to glass tube as it’s in a vacuum
•conduction through the glass tube
•Convection currents surging the tube oil to metal shield
•conduction through housing
•convection currents through air
•heat loss from radiation

Question 3

Laws of emf

Answer 3

Faraday’s laws
•when a magnetic field linked to a conductor changes an EMF is induced in the conductor
•The size of the EMF is proportional to the rate of change of the field
Lenz’s law
•The EMF is in a direction that opposes the changes causing it

Question 4

What does an inverter do?

Answer 4

•It basically increases the supply frequency and allows for kV and mA selection