It is our great honour and pleasure to welcome you to Nagoya, Japan for the 16th Meeting of the Hydrocephalus Society, from 13-16 September 2024. From basic science to the latest clinical developments, we are preparing a ground-breaking programme of exciting yet controversial topics in adult and pediatric hydrocephalus. State-of-the-art imaging and motion analysis will also be highlighted. The last decade has seen an enormous accumulation of data and evidence in hydrocephalus and CSF physiology. Especially, physiology and dynamics of Neurofluid, (which is the new coined word, meaning all fluids in the central nervous system such as blood, extra- and intra-cellular fluids, and CSF) is an arising very hot topic, requiring a lot of research and collaboration. We look forward to welcoming clinicians from neurosurgery, neurology, pediatrics, radiology, geriatrics, and psychiatry, basic scientists, engineers, nurses, therapists, technicians, neuropsychologists, patient advocates, and others with an interest in hydrocephalus. The success of the conference largely depends on your participation! Please join us!