The results are "conclusive," said Carpentier.
Treating the patients completely requires two or more bouts of surgery, and there had been no cases of cerebral bruising or epilepsy.
So far, six of the eight have completed the full programme. Of the six, five have not had a relapse -- a return of cancerous cells to the brain -- at a nine-month monitoring point.
"This is the first time that laser technology has been used intracranially, meaning inside an enclosed skull, using MRI in real time to avoid collateral damage," said Carpentier.
"This is the forerunner of future techniques in which MRI will play a core intervention role in neurosurgery."
The pilot trial, reported in the latest issue of the US journal Neurosurgery, was carried out under the supervision of the French Health Products Safety Agency (Afssaps).
It drew on advanced technology supplied by the M.D. Anderson Cancer Center in Houston, and a Texan company, BioTex Inc., which specialises in the use of lasers for medical therapy.
Source-AFP
SRM