a device operating on the principle of spectrophotometry that allows it by using an auricular sensor to continually record changes in the microconcentration ( up to 1 mg/1 ) of dyes-indicators ( ueviridin , cardiogrin , indigocarmin ) that are introduced in the human blood circulation system for the purpose of diagnosing affections of the liver , kidneys and heart , is described .
C0007226
blood circulation system
C0018787
heart