The bone densitometer Density is a planar scanner, consisting of a fixed table and a "U" arm, which moves along the longitudinal direction, from the foot to the patient's head (X axis).
On the arm is mounted an assembly generator - RX detector, mechanically aligned so that the collimated beam of x-ray centers perfectly the detector.
Generator and detector shift simultaneously along the transverse direction (Y-axis), by means of a transmission belt and gears.
In this way an X-Y scanning in a specific region of interest of the patient is realized.
During the movement along the Y axis, one or more lines of an X-ray attenuated image are acquired, while the translation along the X axis only serves the purpose of positioning to the next line.
Scan type : Pencil beam