A valve metal powder by is prepared by a particular set of sequential steps that involves the use of precursor having preformed morphology. The capture roller moves to contact and separate from the intermediate transfer belt, and rotates while in contact with the removing roller whether in contact with or separated from the intermediate transfer belt. The encoding sequence Q is associated with each byte data of the code string. A transaction may comprise: a start time, a start location, an end time, an end location and an activity code, although for a \u2018start activity\u2019 transaction, the fields relating to the end of the activity will be nullabsent. A 3-dimensional image is constructed from the acquired image data such that any metal artifacts introduced by radio-opaque objects within the examination subject are minimized. Each of the sub-pixels has a first sub-pixel pitch along the first axis, a first sub-pixel dimension along the first axis, and a second sub-pixel dimension along the second axis.