Single particle tracking across sequences of microscopical images: Application to platelet adhesion under flow

Marianna MacHin, Andrea Santomaso, Mario Mazzucato, Maria Rita Cozzi, Monica Battiston, Luigi De Marco, Paolo Canu

Research output: Contribution to journalArticle

Abstract

A versatile and automated image processing technique and data extraction procedure from videomicroscopic data is presented. The motivation is a detailed quantification of blood platelet adhesion from laminar flow onto a surface. The characteristics of the system under observation (type of cells, their speed of movement, and the quality of the optical image to analyze) provided the criteria for developing a new procedure enabling tracking for long image sequences. Specific features of the novel method include: automatic segmentation methodology which removes operator bias; platelet recognition across the series of images based on a probability density function (two-dimensional, Gaussian-like) tailored to the physics of platelet motion on the surface; options to automatically tune the procedure parameters to explore different applications; integrated analysis of the results (platelet trajectories) to obtain relevant information, such as deposition and removal rates, displacement distributions, pause times and rolling velocities. Synthetic images, providing known reference conditions, are used to test the method. The algorithm operation is illustrated by application to images obtained by fluorescence microscopy of the interaction between platelets and von Willebrand factor-coated surfaces in parallel-plate flow chambers. Potentials and limits are discussed, together with evaluation of errors resulting from an inaccurate tracking.

Original languageEnglish
Pages (from-to)833-846
Number of pages14
JournalAnnals of Biomedical Engineering
Volume34
Issue number5
DOIs
Publication statusPublished - May 2006

Fingerprint

Platelets
Adhesion
Fluorescence microscopy
Laminar flow
Probability density function
Image processing
Blood
Physics
Trajectories

Keywords

  • Fluorescence microscopy
  • Gaussian distribution
  • Image analysis
  • Image simulation
  • Perfusion chamber
  • Platelets

ASJC Scopus subject areas

  • Biomedical Engineering

Cite this

Single particle tracking across sequences of microscopical images : Application to platelet adhesion under flow. / MacHin, Marianna; Santomaso, Andrea; Mazzucato, Mario; Cozzi, Maria Rita; Battiston, Monica; De Marco, Luigi; Canu, Paolo.

In: Annals of Biomedical Engineering, Vol. 34, No. 5, 05.2006, p. 833-846.

Research output: Contribution to journalArticle

MacHin, Marianna ; Santomaso, Andrea ; Mazzucato, Mario ; Cozzi, Maria Rita ; Battiston, Monica ; De Marco, Luigi ; Canu, Paolo. / Single particle tracking across sequences of microscopical images : Application to platelet adhesion under flow. In: Annals of Biomedical Engineering. 2006 ; Vol. 34, No. 5. pp. 833-846.
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