An imaging probe may utilize a suitably shaped lens structure to deflect light off-axis, allowing for the acquisition of B-scans by rotary or reciprocating motion of the lens. The system and method according to the invention can construct one or more three dimensional face models using a single image. The electrosurgical apparatus includes the glow blade, a radio frequency generator such that a first output of the RF generator is electrically connected to the glow blade, and an energy source coupled to the glow blade. Based on the querying, the data component in the potentially failing node are copied to one or more of the neighboring nodes.