A new ultrasound device can detect potentially life-threatening conditions more easily. This is very common in soldiers who have brain injuries caused by explosive shock waves, and in patients who have survived aneurysms.
This condition, known as cerebral vasospasm, occurs when blood vessels suddenly contract. The effect is like squeezing the tap water hose used for watering in the garden: When the pressure in the blood vessel rises, the arterial blood flow speeds up and there is less blood flow to the brain. This phenomenon can occur several days after the injury and can now be detected by ultrasound. The use of ultrasound requires trained technicians to find the relevant blood vessels and send them to a specific location.
PhysioSonics, based in Bellevue, Wash., Washington, has developed a monitor that automates the inspection process. This monitor requires no technicians. The company is adapting the product for military use and hopes to extend its use to detect potential risks of increased intracranial pressure.
The company's monitor consists of a headset that allows a series of ultrasound waves to pass through the brain and uses proprietary algorithms to automatically monitor the midbrain artery — one of the main arteries supplying blood to the brain. The monitor can locate the relevant ultrasound beam on the artery and measure its blood flow. An instrument that comes with the headset can provide blood flow and peak speed indicators.
"The point is to give you a variable." Like the heart rate monitor, this variable can be read, Michel Caliot, a neurosurgeon at the University of Washington and co-founder of the company. (Michel Kliot) said. The University of Washington is the birthplace of this technology.
In November, the company received a $2.5 million grant from the military to modify the instrument to monitor the vasospasm of soldiers. Nearly half of the soldiers who had been injured by explosions had vasospasm. The company plans to develop a more rugged and durable version than the commercial version for use on the battlefield.
The device can also be used to monitor patients who have survived a ruptured aneurysm. A large proportion of these people have vasospasm. For these patients, during their days of hospitalization, technicians usually use ultrasound to measure their blood flow once or twice a day. Calliot said that this new device will enable continuous monitoring of high-risk patients and will take longer to monitor. "For example, wearing a headset on the head, in two weeks, to achieve frequent or uninterrupted measurements," said Calliot.
Nerissa Ko, a neurologist at the University of California San Francisco Medical Center's intensive care unit, said the device is based on well-accepted diagnostic technologies and joins Automated innovation. She said that if the innovation is effective, the device can more easily track and monitor blood flow, which is the best way to detect vasospasm.
Brad Harlow, chairman and chief executive of Physiotherapy Energy, said that his company has conducted a study to compare the accuracy of algorithm monitoring and technical staff monitoring and is planning to apply this month. Certified by the US Food and Drug Administration.
The company is also currently working on an algorithm that uses the same technology to monitor intracranial blood pressure. Currently, this type of monitoring requires the doctor to drill a small hole in the cranium. However, the Section warns that although the blood flow changes detected by ultrasound can replace direct blood pressure measurements, it is still unclear whether such devices are sensitive enough to detect subtle, threatening changes.
This condition, known as cerebral vasospasm, occurs when blood vessels suddenly contract. The effect is like squeezing the tap water hose used for watering in the garden: When the pressure in the blood vessel rises, the arterial blood flow speeds up and there is less blood flow to the brain. This phenomenon can occur several days after the injury and can now be detected by ultrasound. The use of ultrasound requires trained technicians to find the relevant blood vessels and send them to a specific location.
PhysioSonics, based in Bellevue, Wash., Washington, has developed a monitor that automates the inspection process. This monitor requires no technicians. The company is adapting the product for military use and hopes to extend its use to detect potential risks of increased intracranial pressure.
The company's monitor consists of a headset that allows a series of ultrasound waves to pass through the brain and uses proprietary algorithms to automatically monitor the midbrain artery — one of the main arteries supplying blood to the brain. The monitor can locate the relevant ultrasound beam on the artery and measure its blood flow. An instrument that comes with the headset can provide blood flow and peak speed indicators.
"The point is to give you a variable." Like the heart rate monitor, this variable can be read, Michel Caliot, a neurosurgeon at the University of Washington and co-founder of the company. (Michel Kliot) said. The University of Washington is the birthplace of this technology.
In November, the company received a $2.5 million grant from the military to modify the instrument to monitor the vasospasm of soldiers. Nearly half of the soldiers who had been injured by explosions had vasospasm. The company plans to develop a more rugged and durable version than the commercial version for use on the battlefield.
The device can also be used to monitor patients who have survived a ruptured aneurysm. A large proportion of these people have vasospasm. For these patients, during their days of hospitalization, technicians usually use ultrasound to measure their blood flow once or twice a day. Calliot said that this new device will enable continuous monitoring of high-risk patients and will take longer to monitor. "For example, wearing a headset on the head, in two weeks, to achieve frequent or uninterrupted measurements," said Calliot.
Nerissa Ko, a neurologist at the University of California San Francisco Medical Center's intensive care unit, said the device is based on well-accepted diagnostic technologies and joins Automated innovation. She said that if the innovation is effective, the device can more easily track and monitor blood flow, which is the best way to detect vasospasm.
Brad Harlow, chairman and chief executive of Physiotherapy Energy, said that his company has conducted a study to compare the accuracy of algorithm monitoring and technical staff monitoring and is planning to apply this month. Certified by the US Food and Drug Administration.
The company is also currently working on an algorithm that uses the same technology to monitor intracranial blood pressure. Currently, this type of monitoring requires the doctor to drill a small hole in the cranium. However, the Section warns that although the blood flow changes detected by ultrasound can replace direct blood pressure measurements, it is still unclear whether such devices are sensitive enough to detect subtle, threatening changes.
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