The second workshop on interventional neuroradiology, organised by the Indraprastha Apollo Hospitals, was inaugurated here on Thursday.This three-day workshop has been convened in order to expose neuro-scientists in India and the neighbouring countries to the new techniques of surgery developed at the hospital.The main thrust will be on the technique of Thrombolysis, the process of injecting a special medicine directly into the clot within an artery of the brain to dissolve it, that has been successfully tried out vy Dr Anil P. Karapurkar. This technique was used for the first time in India during a seven-hour-long surgery that was performed on a 21-year-old girl suffering from paralysis of the left side of her body.