After completing the FRCS (England) in 1970, he joined the Neurosurgery training programme in Manchester. During this period he obtained the PhD from the University of Salford. The thesis is the subject of this book. He spent some time in India as the head of the departments of Neurosurgery at National Institute of Neurosciences and St. Johns Medical College. He spent a few years in Saudi Arabia and emigrated to Australia. He was elected to the FRACS (Neurosurgery). He is now working as a consultant. He is involved with CFD research programme in the University of Sydney. His other research publications are Role of Hypothalamus in Acute Mountain sickness and Benefits of chewing coca leaves among A-dean Highlanders. After graduating in Mechanical engineering, joined the HV department, IISc, Bangalore as Junior Scientific Assistant, for two years. Taught Agricultural Engineering at the University of Agricultural Sciences (UAS) for 12 years. Obtaining the PG Diploma in Instrumentation (IISc), moved to Instrument Servicing at UAS for thirteen years. It was during his stay at UAS he was deputed to NIMHANS for research on AVMs. He trained himself in computers and developed specialized servers and network systems. He acquired specialization in embedded systems and trained teachers in technical schools. Presently retired and has keen interest in CFD simulation of AVMs. Received his post-graduate degree in Pathology from Bombay University in 1963. Trained in Neuropathology under Prof. Blackwood at the National Institute of Neurology, Queen's Square, London. Held the position of Professor and Head of the Department of Neuropathology at NIMHANS, Bangalore. Is currently working as a Consultant in Pathology in Bangalore.