For the first time, imaging photoplethysmography synchronized with an electrocardiogram was used to study and diagnose systemic lupus erythematosus. It was found that patients experience significant changes in the photoplethysmographic characteristics of the microvasculature of the facial skin in the cheeks compared with the control. Therefore, the proposed technique can pretend to be an objective instrumental criterion of the disease.
Подолян et al. (Wed,) studied this question.