The purpose of this web site is to gather tortuosity measurements for cerebral arteries.
For each presented artery, a tortuosity score must be provided between 0 (straight line : no tortuosity) and 100 (high tortuosity artery).
The first 5 presented arteries are there for « anchoring » (or training), this means their purpose is to give an idea of the various tortuosities we will encounter during the test.
Among these 5 arteries, 2 are highly tortuous, 2 are weakly tortuous (almost straight lines), and one presents an average tortuosity (suggestions are provided for the scoring intervals of the 5 « anchoring » arteries).
Overall, the test includes 65 volumes and last for about 10 to 15 minutes.
Ideally, each subject should run the test twice.
Various actions are possible:
Once the score is provided, the web browser displays the next artery.
Thank you in advance for participating to this experiment.