Dr. Purkayastha’s neurovascular research focuses on complex disorders of the brain and spinal vascular system. His work includes studies and case reports related to aneurysms, arteriovenous malformations, vascular fistulae, Moyamoya disease, carotid artery disease, cerebral haemorrhage, vascular anomalies, and advanced endovascular treatment strategies. His academic contributions highlight the diagnosis, imaging, treatment planning, and long term follow-up of rare and complex neurovascular conditions.