Total occlusions are crossed by passing a guidewire or other penetrating wire from a point proximal to the occlusion into a subintimal space between the intimal layer and adventitial layer of the blood vessel wall. The angular contact bearings are carried respectively within a pair of generally cylindrical bearing sleeves which cooperatively define an axially split bearing carrier mounted within a turbocharger housing. In one aspect of this embodiment, applying ultrasonic energy includes applying ultrasonic energy from a transducer. In addition, the technique may determine and remove outlier points from the projection, and determine and recover inlier points in the projection.