Dr. Purkayastha’s peer-reviewed work reflects a strong academic focus on evidence-based neurointervention and neuroradiology. His articles include original research, clinical case series, rare case reports, imaging-based studies, letters to editor, and collaborative multicentre studies. His peer-reviewed publications cover important clinical areas such as endovascular aneurysm treatment, carotid angioplasty and stenting, cerebral arteriovenous malformations, intracranial haemorrhage, vertebral lesions, central nervous system bvasculitis, Moyamoya disease, optic neuritis, multiple sclerosis, and pediatric aneurysm management.