Abstract
A quantitative and rapid burn injury detection method has been proposed based on the electrical impedance spectroscopy (EIS) of blood with a seven-parameter equivalent circuit. The degree of burn injury is estimated from the electrical impedance characteristics of blood with different volume proportions of red blood cells (RBCs) and heated red blood cells (HRBCs). A quantitative relationship between the volume portion HHCT of HRBCs and the electrical impedance characteristics of blood has been demonstrated. A seven -parameter equivalent circuit is employed to quantify the relationship from the perspective of electricity. Additionally, the traditional Hanai equation has been modified to verify the experimental results. Results show that the imaginary part of impedance ZImt under the characteristic frequency (fc) has a linear relationship with HHCT which could be described by ZImt = −2.56HHCT − 2.01 with a correlation coefficient of 0.96. Moreover, the relationship between the plasma resistance Rp and HHCT is obtained as Rp = −7.2HHCT + 3.91 with a correlation coefficient of 0.96 from the seven -parameter equivalent circuit. This study shows the feasibility of EIS in the quantitative detection of burn injury by the quantitative parameters ZImt and Rp, which might be meaningful for the follow-up clinical treatment for burn injury.
Highlights
It is reported that about 11 million people suffer from burn injuries every year all around the world [1,2,3]
The value of ZImt reduces from 0.29 Ω to 0.07 Ω under the condition that HHCT goes up from 10% to 40% in the calculation results
A quantitative and rapid burn injury detection method based on electrical impedance spectroscopy (EIS) has been proposed
Summary
It is reported that about 11 million people suffer from burn injuries every year all around the world [1,2,3]. The observation method is one of the most common utilized methods with an advantage of low cost [4] Since it is measured by the eyes of doctors, the result is greatly influenced by personal experience which may lead to a low accuracy [5]. Other methods, like fluorescence detection (FD), infrared thermal imaging (ITI), ultrasonic imaging (UI) and computed tomography (CT) are applied for the measurement of burn injury. All these methods have their own advantages and disadvantages [4,5,8,9]
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