Abstract: Systems and methods for the calibration of X-ray devices and systems are described in this application. In particular, this application describes a calibration apparatus for an X-ray imaging system that comprises a housing containing an X-ray sensor and a calibration array having multiple calibration targets located within or on a substrate. Each calibration target comprises an element with an X-ray absorption higher than that of the material of the substrate. The multiple targets are in a fixed spatial relationship relative to each other. The calibration apparatus can be incorporated into an aligner that is used with the X-ray imaging system. That calibration apparatus increases the accuracy of the construction of a three dimensional (3D) image from a series of two dimensional (2D) images taken by the X-ray imaging system. Other embodiments are described.

Abstract: This application describes an internal, re-chargeable power source for a portable medical device. The power source contains a removable battery pack comprising a lithium-containing material with 5 to 7 battery cells in series, each individual cell having a current capacity ranging from about 3000 mAh to about 3700 mAh. The power source can have a total energy capacity ranging from about 65 Watt-hour to about 170 Watt-hours. Other embodiments are described.

Abstract: This application describes an internal, re-chargeable power source for a portable medical device. The power source contains a removable battery pack comprising a lithium-containing material with 5 to 7 battery cells in series, each individual cell having a current capacity ranging from about 3000 mAh to about 3700 mAh. The power source can have a total energy capacity ranging from about 65 Watt-hour to about 170 Watt-hours. Other embodiments are described.