Lorry driver jailed for killing pregnant nurse in Edinburgh crash
Norgate had earlier pleaded guilty to a charge of causing death by dangerous driving.
Sentencing Norgate, Judge Lord Armstrong said: "No sentence that I can impose can in any sense be a measure of the value of the lives that have been lost nor provide a comfort to the family whose lives have been devastated.
"Their lives have been changed radically for the worse."
The court heard Norgate had six points on his licence following a previous offence related to using a mobile phone while driving.
Nigeria-born Ms Brown was the mother of two young children.
She worked as an agency nurse and had finished a 12-hour shift at East Lothian Community Hospital in Haddington on the day of the crash.
Earlier court proceedings heard that she had texted her sister to tell her she was on her way home.
Defence advocate David Nicolson KC said the lorry driver was "utterly devastated" about the loss of Ms Brown's life.