Results:
75 crossings were attempted by 3 vascular surgeons, 25 crossings each. Participants tried crossing the CTO by inflating the IntraCross Catheter balloon as close to the CTO cap as possible. Analysis from measurements from 69* successful crossings showed a mean radius of 1.4 mm and a median radius of 1.0 mm.
*failed attempts were due to a single surgeon, out of three, who reported vision difficulties on the day of the experiments.

Conclusion:
Centreline crossing has been confirmed as a key attribute of the device, as it implies intraluminal crossing – a major objective during CTO crossing.  
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Figure 2. Depiction of the method used for documenting balloon centering and measuring the distance of the inner shaft tip from the centre of the vessel