She was initially told that, to remove the pleomorphic adenoma, surgeons would have to cut out her largest salivary gland, which contains the facial nerve.
But the new hologram technique allows surgeons to pinpoint the exact location of the facial nerve, leaving less chance of it being severed.
It also allows surgeons to open up the salivary gland, rather than remove it.
Susannah paid to have a hi-tech MRI scan in London, which produced a hologram.
It was then used by Iain Nixon, the surgeon who performed the operation, in Livingston, West Lothian, last month.
“Iain has saved my smile, I’m so thankful to him” Susannah told BBC Scotland News.
“I feel on top of the world, I’m on a high and it’s giving me a real buzz.”
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