Gold coils are the latest weapon in prostate cancer war
Gold coils could be used in the fight against prostate cancer
Doctors are arming themselves with a precious new weapon in the fight against prostate cancer – gold.
Gold coils are being used to target radiotherapy more accurately, intensifying the effect of the treatment on the prostate and preventing damage to nearby organs such as the bowel or bladder.
Around six of the coils, which are 1cm to 2cm long and cost 80 to 100 each, are inserted in the prostate prior to treatment.
Gold is used because it shows up on scans and few people are allergic to it. Once fitted, the coils stay in the prostate for life.
Amit Bahl, lead doctor at the Bristol
Haematology and Oncology Centre oncology, said that in radiotherapy on
the prostate, radiographers try to minimise the target area for
But because the prostate tends to
move, especially over several weeks of regular treatment, it helps to
scan patients before each dose.
'You cannot see the prostate when you
are treating patients on the radiotherapy machines because it is soft
tissue and all looks the same,' Dr Bahl said.
'You can see the bony structure of the hip but not the prostate.
'If you put the gold coils into the
prostate you can see them in scans and make sure that any movement of
the prostate is accounted for,' he added.
If patients are having radiotherapy they will have 37 treatments over a seven-and-a-half-week period
Scans are taken of the pelvis after
the coils have been implanted so that radiographers know where to direct
the radiation and further scans are done before each treatment and
compared to the originals to check where to deliver the radiotherapy.
Adjustments can then be made while the patient is on the couch to ensure the radiation goes to the right area.
'We did not know what we could not see before,' Dr Bahl said.
'And that makes you realise how important this is.
'It gives you the confidence that you can narrow down the beams to cover just the prostate without missing the target.
'Hopefully it will give patients better survival chances and a better quality of life.
'So far 14 men have had
the gold coils inserted into their prostates prior to radiotherapy and
the hospital is intending to use the precious metal on a further six
patients,' he continued.