Abstract: Methods and systems for facilitating combined co-registration and image pixel calibration of multimodal data are provided. According to one embodiment, a first set of digital image data is received that includes pixel data associated with a portion of a patient's anatomy and a fiducial system. A second set of digital image data is received that includes pixel data associated with the portion of the patient's anatomy and the fiducial system. One or both of the sets of digital image data are adjusted, calibrated, modified or verified based on known characteristics of the fiducial system. A composite model of the portion of the patient's anatomy is generated by co-registering the two sets of digital image data based on the pixel data associated with the fiducial system.

Abstract: A vapor recovery canister is provided and includes an inlet port, an outlet port, and a first and second valve. The first and second valves are operable to restrict fluid flow into the canister, whereby the first valve is operable to selectively close the inlet port and the second valve is operable to selectively close the outlet port. In addition, the second valve includes at least one orifice formed therethrough for continuous fluid communication with an ambient air stream. In this manner, if both the first and second valves are in a closed position, an ambient air stream will be in fluid communication with an interior volume of the canister during a purging process through interaction of the orifice. The interaction of the orifice causes a high vacuum pressure within the canister, thereby increasing working capacity and reducing diurnal breathing loss.