Illustration of ABI determination by Vicorder and Vascular Explorer. We present the default methods of both PPG-based devices. While Vascular Explorer measures during the disappearance of signal (inflation method), Vicorder measures during the re-appearance of the signal (deflation method).
Teren et al. BMC Cardiovascular Disorders 2013 13:81 doi:10.1186/1471-2261-13-81