This presentation gives a brief description about the stroke finder helmet which was developed recently by scientists. It describes about the main components in the stroke finder helmet and its advantages over the current diagnosis systems that we have now a days.

1. BY, GUIDED BY,
CIJU VARGHESE ANJALI. R
S7 EC B ASST. PROF.
R.NO 10 EC DEPT.
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2.  Stroke is the No.3 cause of death.
(#1 – Heart Disease, #2 – Cancer)
 5 million people/year die and another 5 million
are permanently disabled.
 Every 3.1 minutes someone dies of a stroke.
 Time is a crucial factor.
 For neurologists “time is brain”.
 Limitations of current diagnosis.
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3.  Brain tissues are damaged from a sudden loss
of blood flow, resulting in a loss of
neurological function
Types:
 Ischemic stroke (85%) is blood flow is blocked to
the brain.
 Hemorrhagic Stroke (15%) is bleeding occurs from
vessels within the brain.
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4.  tPA (Tissue Plasminogen Activator)
 is a clot-busting drug
 It dissolves blood clots obstructing blood flow
to the brain.
Medical Surgery
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5.  Microwave property of non-ionising radiations.
 Zero side effects to body.
 Relatively cheap,compact,portable technology.
 Vast research and development in Microwave
Tomography(MWT).
 Exploits dielectric variations in brain.
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7. Consists of:
A helmet-like antenna system which is placed on
the patient’s head.
A microwave unit plus a computer for equipment
control, data collection.
Signal Processing.
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8. 10 triangular patch antennas.
Power input is 1mW.
Frequency Range 0.3-3.0GHz
A liquid(water) bag is placed
between antenna and skull.
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10. Data from each channel is pre-processed.
The total output signal power is made equal.
Data is transformed by an algorithm.
Full reconstruction of dielectric parameters
algorithm is used.
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12. Specificity v/s Sensitivity is plotted.
Area under curve(AUC) should be between 0.5 and 1.
Better performance to detect ICH v/s healthy(AUC=0.88).
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