Lassi Rieppo

Experience

• 

  University of Eastern Finland

  Jun 2010 - Dec 2013

  - Comparison of infrared spectroscopy and traditional biochemical assays for analysis of cartilage composition- multivariate (partial least squares) regression methods were used for this purpose Ph.D. thesis: Infrared spectroscopic characterization of articular cartilage- Infrared spectroscopic imaging of unstained histological cartilage sections- Development of data analysis methods for qualitative and quantitative analysis- Data analysis methods included band areas, principal component regression, partial least squares regression, and cluster analysis (k-means, fuzzy c-means)

  • Post-doc Fellow

    Feb 2013 - Dec 2013

  • PHD Student

    Jun 2010 - Feb 2013
• 

  TPC MediSys

  Jan 2014 - Jan 2015

  Chief Technology Officer
• 

  University of Oulu

  Feb 2015 - Aug 2021

  - Primary research project: assessing the aggressiveness of melanoma based on infrared spectroscopic images of skin biopsies- Teaching courses in biomedical engineering- Supervision of BSc, MSc and PhD students - Primary research project: Data analysis of fiber-optic mid-infrared spectroscopy probe data to assess cartilage tissue quality- Methods included principal component analysis, partial least squares regression, support vector machines, and random forests- Teaching courses in biomedical engineering- Supervision of BSc, MSc and PhD students - Analysis of 3D structure of articular cartilage from micro-computed tomography images using structure tensor analysis- Quantification of collagen content in articular cartilage using densitometric measurement of histochemical dyes

  • Senior Researcher

    Sept 2020 - Aug 2021

  • Academy of Finland Postdoctoral Fellow

    Sept 2017 - Aug 2020

  • Postdoctoral Researcher

    Feb 2015 - Aug 2017
• 

  GrainSense

  May 2017 - Aug 2017

  Research Scientist

  - Calibration of handheld near-infrared (NIR) spectroscopy-based device for quantitative analysis of grain composition

• 

  Polar Electro Oy

  Aug 2021 - now

  Senior Researcher

  - Algorithm development- artificial intelligence- data science