CORADS Score Practice

Goal of this educational reader study. Become familiar with assigning CO-RADS scores to CT scans made of Covid-19 suspects. You are presented with 50 CT scans of Covid-19 suspects. You need to assign a CO-RADS score to each exam. The score indicates the likelihood of a Covid-19 diagnosis on a 5-point scale, from 1 (very low), 2 (low) 3 (equivocal or unsure), 4 (high), 5 (very high). There is also a score for a technically insufficient examination (CO-RADS 0) and known COVID-19 at the time of the exam (CO-RADS 6).

After scoring an exam, you can click Verify Answer to see the results for this case of a CO-RADS reference panel of 8 radiologists and rt-PCR. None of the scans received a CO-RADS 0 or 6 score, so please score each scan from 1 to 5. The PCR result is also listed as a question, and you can answer it if you want to make a guess, but you may skip it and you will see the PCR results as a 'correct answer' after you click Verify Answer.

Information on CO-RADS. The description of evaluation of the system can be found in Radiology. You may want to consult Radiology Assistant and this document.

Tip. Use a modern browser (Chrome works fine) and make sure you have a good wifi or wired internet connection for smooth scrolling. The rendering server is stationed in The Netherlands, if you connect from far away, scrolling may be a bit sluggish.

Quick help for the online viewer. In the Display panel, you can use buttons to invert the image and reset the window level, change the window level via the dropdown menu and edit boxes, select slab projections of a thickness you can enter (Averaging, Maximum and Minimum intensity projections are supported) and you switch between Axial, Coronal and Sagittal projections with the A, C, S buttons. The Toolbox panel allows you to set the left mouse button to scrolling (default) or panning, zooming and window leveling. The right mouse button is always used for scrolling. The i button provides help information and feedback on how many cases you have left to read.