2.5.3. Skin Temperature
XIAOMI
SKIN
Skin temperature was measured by an infrared body surface thermometer (XIAOMI thermometer, Beijing, China). The measurement points were positioned in line with the ultrasound image scanning position. The researcher held the instrument so that the infrared measuring head was parallel to the measurement area and 3 cm apart and repeated the measurements three times to take the average value for data analysis. According to the product parameters of the instrument, the clinical repeatability was ±0.3 °C, and the resolution was 0.1 °C, which has good reliability.