Authors:
Dalchand Ahirwar
1
;
Kshitij Shakya
1
;
Aihik Banerjee
2
;
Dheeraj Khurana
3
and
Shubhajit Roy Chowdhury
1
Affiliations:
1
Biomedical Systems Laboratory, Multimedia Analytics and Systems Group, School of Computing and Electrical Engineering, Indian Institute of Technology, Mandi, India
;
2
Department of Biotechnology, Heritage Institute of Technology, Kolkata, India
;
3
Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
Keyword(s):
Ischemic Stroke, Hemorrhagic Stroke, Mid-cerebral Artery, Cerebral Oxygenation Level, Near Infrared Spectroscopy.
Abstract:
This paper presents an approach to identify and classify the type of stroke, viz ischemic and hemorrhagic conditions. Ischemic stroke is caused by the blood clot and plaque present in the blood vessel. Hemorrhagic stroke, on the other hand, occurs when a rupture happens in the cerebrovascular artery or mid-cerebral artery causing impairments in blood flow and hence the supply of oxygen to the cerebral tissues. The current research analyses the blood flow velocity, the pressure profile of blood clot and plaque, and the condition at which ischemic and hemorrhagic stroke occurs. Simulation studies show the pressure on the blood vessel walls under ischemic and hemorrhagic stroke conditions and also that under nominal blood flow velocity the hemorrhage does not occur, but when the velocity is sufficient enough to increase the pressure on the wall, rupture of the mid-cerebral artery takes place. The simulation assumes the blood flow to be laminar, non-Newtonian, viscous, incompressible, an
d the arterial wall as elastic. Using the simulation model, an approach to classifying ischemic and hemorrhagic stroke using near infrared spectroscopy has been proposed in the paper.
(More)