公开(公告)号：EP2838431A4

公开(公告)日：2016-01-20

申请号：EP13778005

申请日：2013-04-11

Applicant: HUTCHINSON TECHNOLOGY

Inventor： SCHEELE BRYAN J ,  FINSTROM NICHOLAS H ,  SCHMITZ ROGER W

IPC: A61B6/00 ,  A61B5/05 ,  A61B5/1455

CPC classification number: A61B5/14552 ,  A61B5/1455 ,  A61B5/14551

Abstract: A near infrared spectrometer and method for wavelength and path length correction are disclosed. The spectrometer includes a number of photodiodes that transmit broadband near infrared measurement light into the tissue and at least one broadband detector which measures the light signal transmitted through the tissue. A processor estimates chromophore concentrations through a comparison of measured light attenuation and modeled light attenuation. The light attenuation model utilizes a light path length distribution derived from a Monte Carlo model and accounts for the spectral shape of the light source as a function of temperature.