Ki67 Match Slider

Move the slider until the 100-cell block looks like the same proportion of brown tumour nuclei as the field, then lock in your match. The slider value is your Ki67 estimate. Results and the numbered ground truth appear after all ten fields.

Field 1 of 10

Count: tumour nuclei onlyPositive: any brown nuclear stainingExclude: small round lymphocytes

Reference: 100 tumour cells. Each slider step turns one more cell brown.

Match the field hidden

0255075100

Show the number while sliding

The slider starts at a random point for each field so it does not anchor your eye. Arrow keys move it one cell at a time.

Results from the match slider

Your matches against the truth

Log scale. The shaded band is ±2-fold. Dotted brown lines mark 5% and 30%.

Field	True	Your match	Diff (pp)	Fold	Result

Compare with your RMSE in the training sets (typed estimates) and the reference-strip trials.

Educational exercise, not for clinical use. All fields and the reference block are computer-generated with a stored count for every nucleus. They train visual estimation and are not real tissue.