The trial of Pascal Carmody has heard evidence from the brother of a cancer patient who received photodynamic treatment from Mr Carmody.
Mr Carmody is pleading not guilty to 25 charges related to obtaining money by falsely pretending he could cure six patients of cancer, through photodynamic treatment.
Mary O'Connor had been living in Surrey with her two young children when she was diagnosed with a tumour on her chest in February 2002.
She then relocated home to Cork to be near her family.
Ms O'Connor's broter, Noel, told the court how he heard about Mr Carmody through a GP in Bantry.
He said that in March 2002 the O'Connor family then decided to take their sister Mary to Killaloe for photodynamic treatment.
The family hired a helicopter because Ms O’Connor was too ill to travel by car.
A car then took her a couple of hundred yards to the East Clinic in Killaloe because she was too weak to walk.
The PDT treatment was carried out by Dr William Porter, then partner of Mr Carmody.
The court heard how Dr Porter has since left the country.
Within days of returning to Cork Mary O'Connor's condition rapidly deteriorated and she was admitted to a hospice.
Ms O'Connor died in May 2002 aged 46.
Counsel for the Defence, Pat Marrinab, argued that Paschal Carmody had no idea that an entourage was descending on the clinic in Killaloe for what was only an initial consultation.
He said his client was overwhelmed by the sight of a helicopter landing in the local GAA field.
Noel O'Connor said he had earlier indicated that his sister would be flown to see Paschal Carmody.
Pat Marrinan SC said Mr Carmody had been put under pressure to have the treatment administered.
Tomorrow a sister of Mary O'Connor, Catherine Casey, will give evidence on the third day of the trial that is expected to go on for at least four weeks.
