Release date: 2016-03-09 The Coded Hemodynamic Imaging technology visualizes the flow of blood under the skin of the body and clearly shows the blood pulse. Researchers believe that this device can not only help prevent sudden cardiovascular disease, but may even make predictions. Professor Alexander Wong and Robert Amlar are analyzing the data extracted by the new device. Amlar is confident that the device can be safely used on people without X-rays or ultrasound. According to the British "Daily Mail" report, a new device called "Coded Hemodynamic Imaging" is about to be born, and it will replace the stethoscope, sphygmomanometer and needles for monitoring blood flow in the future. According to reports, this new technology can observe the flow of blood under the skin of the whole body and clearly show the blood pulse. Researchers believe that this device can not only help prevent sudden cardiovascular disease, but may even make predictions. Researchers at the University of Waterloo in Canada say it is the first mobile contactless device that allows doctors to monitor the patient's systemic blood flow. “The conventional system that is widely used today reads blood flow pulses at one point in the body,†says Robert Amelard, a Ph.D. student in system design engineering at the University of Waterloo. “And this device is like a lot of virtual The sensors work together to measure blood flow in different parts of the body. It transmits the measurement data of all these pulse points to the computer for continuous monitoring.†In other words, the device is like a skin that can see through the skin. The camera in the depth can highlight the blood flow. "Encoded blood flow imaging" requires a light source and visualizes blood flow in different parts through the design of medical hardware and digital signal processes. In fact, it only images through the interaction of light and blood. Amlar is confident that the device can be safely used on people without X-rays or ultrasound. The researchers conducted experiments on the feasibility of long-distance monitoring of "photoplethysmographic imaging" (PPGI) technology, and the results were published in the recent issue of Nature. Two experiments have used cameras and LED light sources. In the first experiment, the experimenter was asked to place a finger between the light source and the camera at a distance of 20 cm. In the second experiment, they repeated the action, except that the camera and the light source were 1.5 meters apart. “Although some short-lived pulsations have been removed – not all samples, the basal heart rate of all participants can be identified,†the study paper said. “This shows that (the distance becomes longer) the time analysis between the two pulsations It's difficult, but the heart rate is still identifiable in long-distance PPGI monitoring." Experimental results show that the "encoded blood flow imaging" system is successful in both cases. Amral believes that the device will help older people identify blood flow problems and predict whether there will be vascular obstruction in the future. “Because this device can scan multiple patients at the same time, and beyond a distance, you can imagine its prospects for large-scale emergencies or long-term family care,†said Professor Alexander Wong, who is involved in device development. Technology provides a more predictable method for monitoring critical illness. It has a wide range of applications, such as indicating some arterial obstruction that may be difficult to detect, or an elderly person who may fall due to dizziness when standing. Provide an early warning." Source: Sina Technology
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