| 摘要 |
A system and method for calibrating a measurement instrument (3) prior to making a measurement on a material or tissue (40) includes utilizing a removable calibration device (45) to calibrate the instrument, then removing a target portion of the calibration device so that a measurement may be performed. The target portion of the calibration device may have reflective/scattering properties, transmissive properties, or fluorescent properties that are used by the instrument to perform a calibration operation. A method embodying the invention may include making a bilirubin concentration measurement on a skin of a patient by measuring the amplitude of light reflected from the patient's skin at first, and second wavelengths indicative of a blood content of the patient's skin; measuring the amplitude of reflected light at a third wavelength indicative of an uncorrected bilirubin concentration; and then calculating a corrected bilirubin concentration based on the three measurements. |
