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Welcome to Ki67-QC calibrator

Polley et al. An international study to increase concordance in Ki67 scoring.

This web-based calibration exercise was designed to calibrate pathologists to a prescribed scoring method. Nine “training” and nine “test” tissue microarray cases representing a wide range of Ki67 scores were chosen to serve as the calibration cases.

This website interface allows pathologists to score the web-image cores via computer mouse click on individual cells. The website software tracks which cells were scored, where those cells were located within the core, whether each cell was scored positive or negative, and the overall Ki67 score for each core. Images of H&E-stained sections from the cores were also uploaded for reference.

The specific Ki67 scoring procedure is described in detail here .

Try the calibration exercise yourself ...

Please follow the instructions below to try the calibration exercise.

  1. If you haven't done so already, please create an user account
  2. sign in and follow the instructions