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Performance Assessment

By Alessandro Torricelli and Meryem Yucel

BIP – Basic performances

Wabnitz et al. J Biomed Opt 19:086010 (2014) 



  1. Responsivity
  2. Instrument response function*
  3. Dark noise
  4. Stability
  5. DNL*

* Specific for time domain fNIRS

MEDPHOT – Homogeneous problems

Pifferi et al. Appl Opt 4:2104 (2005)



  1. Accuracy
  2. Linearity
  3. Noise
  4. Stability
  5. Reproducibility

nEUROPt – Heterogeneous problems

Wabnitz et al. J Biomed Opt 19:086012 (2014)



  1. Sensitivity
    1. contrast
    2. contrast to noise ratio
  2. Spatial resolution
    1. depth selectivity
    2. lateral resolution
  3. Quantification of absorption changes
    1. accuracy
    2. linearity

DCS instrument design

Cortese et al. Biomed Opt Express 12:3265 (2021)



  1. Precision
  2. Noise