Science and Technology
publicado em 30/03/2011 às 03h00:00
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Device uses technology to diagnose heart attacks submarine

Technology can easily differentiate normal brain from a life-threatening situation, such as swelling and bleeding

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Medical device uses technology for submarine detection, diagnosis and monitoring of heart attacks. It is suggested that researchers at University Health Network, Canada.

Each type of stroke and traumatic brain injury is detected, identified and located using a simple headset and a handheld console based on a laptop. The device's portability and speed of initial diagnosis (lasting a few minutes) make it suitable for many applications outside the hospital.

The unique capability of continuous monitoring of the device allows the immediate detection of changes in a patient's condition.

The researchers' hope is that the technology can be adapted and used in other areas of acute care, such as open heart surgery (where stroke is a concern if present) in vascular indications in other parts of the body and monitoring the progression of disease to monitor drug efficacy.

How it works

"The system is very simple in principle and provides extraordinarily rich data," said Dr Kieran J. Murphy.

The device based on subsea technology means it works to measure the pulse complex brain of the patient, providing information on the type and location of an abnormality in the same way that a sonar submarine works.

Both use a set of sensors to measure movement and generate signals to be processed and analyzed.

"Just as the sonar detect whales and ships, the device also detects brain disorders, such as aneurysms, arteriovenous malformations, ischemic stroke and traumatic brain injury of normal variations in physiology," said Murphy.

The system measures the movement of the skull (acceleration) to separate acoustic signals confusing the movement created by the flow of blood as the blood flow to the brain during each pulse and a pressure wave out veins in all directions. The wave meets the skull and accelerates it. The device measures acceleration and records this complex waveform with a time-synchronized high-resolution scanner.

The researchers evaluated the effectiveness of the 40 patients studied, 16 men and 24 women, with a wide variety of cerebrovascular conditions, including intracerebral hemorrhage, subarachnoid hemorrhage, aneurysms, arteriovenous malformations, ischemic stroke and transient ischemic attack.

   Palavras-chave:   Heart attacks    Strokes    Submarine technology    University Health Network   
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