Grade hepatic, portal and intrarenal Doppler the way the published score defines it. Every waveform is generated live and timed to the ECG, so you learn to find S and D the way you will on a real machine.
Hepatic vein
Portal vein
Intrarenal vein
This example cycles through grades 0 to 3. The full trainer lets you change each vein yourself, freeze and measure, and test yourself on random cases.
Change one vein at a time and watch the waveform and the grade respond.
Random cases balanced across all four grades. Grade each vein, then the overall score.
The grading rules, IVC technique and reading pitfalls in one place.
After you grade a case, the trainer marks each answer, labels the waves on the trace and shows its work.
Here the portal vein was graded too harshly and the intrarenal vein too softly. Both are common misses.
S is equal to or smaller than D. Both are still below the baseline.
PF (20 − 17) / 20 = 15%. Under 30% is normal, 30 to 49% is mild, 50% or more is severe.
You answered Mild.
Venous flow is interrupted and splits into separate S and D phases.
You answered Normal.
IVC 2.5 cm is dilated and no vein is severely abnormal.
Click Open the trainer on the confirmation screen and your key is filled in for you. The key is also in your receipt email, so you can unlock your other devices later. Your browser stays signed in after that.
No. Every waveform is generated by code from the published grading definitions and timed to a simulated ECG. There is no patient data anywhere in the product.
No. It is an educational simulator. It does not read images from an ultrasound machine and should not be used for clinical decisions.
Yes. It runs in any modern browser on iPhone, Android, iPad and desktop. There is nothing to install.
Yes. Email [email protected] for a program license for residents or fellows.
Email within 14 days of purchase for a full refund. See the refund policy.