Abstract: Disclosed herein is a dual energy X-ray imaging apparatus. The dual energy X-ray imaging apparatus includes: an X-ray generator configured to generate a predetermined dose of X-rays; an X-ray detector configured to detect the X-rays received from the X-ray generator; an X-ray filter located between the X-ray generator and the X-ray detector, and configured to filter out part of the generated X-rays so that X-rays of two dose types reach the X-ray detector; and a medical image processing unit configured to generate medical images corresponding to the two dose types recognized by the X-ray detector.

Abstract: Provided is a miniaturized X-ray tube including an extractor and provides a miniaturized X-ray tube including a filament that emit electrons if a voltage is applied, a base having two filament through-holes for fixing the filament and for connecting power to both electrodes of the filament, a cylindrical extractor in close contact with the base and surrounding the filament without being in contact with the filament, a cutoff voltage providing unit configured to apply a cutoff voltage between one electrode of the extractor and one electrode of the filament, a body that is formed of a ceramic material, surrounds the extractor, and includes one end in close contact with the base, and a target that is connected to the other end of the body, receives the electrons emitted from the filament, and emits X-rays.