Several stroke classification systems exist, such as the TOAST system and the Oxfordshire method outlined on the slide.3
References:
1. Adams HP Jr, Bendixen BH, Kappelle LJ, et al. Classification of subtype of acute ischemic stroke. Definitions for use in a multicenter clinical trial. TOAST. Trial of Org 10172 in Acute Stroke Treatment. Stroke 1993; 24 (1): 35–41.
2. Bamford J, Sandercock P, Dennis M, et al. Classification and natural history of clinically identifiable subtypes of cerebral infarction. Lancet 1991; 337 (8756): 1521–1526.
3. Odier C, Michel P. Common stroke syndromes. In: Brainin M, Heiss WD (eds). Textbook of Stroke Medicine. Cambridge University Press, 2010. Pg. 121–134.