Silhouette

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Hints

      How to play

      Name the main finding on today’s chest X-ray. You have five guesses.

      Each wrong guess is compared with the answer on three traits:

      Category
      Where it lives: airspace, volume loss, interstitial, pleural, cardiac or mediastinal, airways and hyperinflation, or mass and nodule.
      Acuity
      Acute, subacute, or chronic.
      Density
      Does it make the film whiter (opacity), darker (lucency), or change a contour or size?

      After each wrong guess you can unlock a hint. Tap the X-ray to see it full screen.

      A new case appears every day at midnight, your time.

      For education and entertainment only. Not for clinical decision-making.

      Statistics

      Guess distribution

        About

        Silhouette is a daily chest X-ray game for students, trainees, and anyone curious about reading films. Every player sees the same case each day.

        For education and entertainment only. Silhouette is not a diagnostic tool and must not be used for clinical decisions. Each case simplifies a real image to one main finding.

        Images

        Images come from the NIH ChestX-ray14 dataset, provided by the NIH Clinical Center. Dataset labels were mined automatically from reports; every case here is checked by a physician before release.

        Wang X, Peng Y, Lu L, Lu Z, Bagheri M, Summers RM. ChestX-ray8: Hospital-scale chest X-ray database and benchmarks on weakly-supervised classification and localization of common thorax diseases. IEEE CVPR 2017, pp. 3462–3471. Data: nihcc.app.box.com/v/ChestXray-NIHCC. We thank the NIH Clinical Center for providing this data.

        Contact

        Questions, corrections or case suggestions: [email protected]