Radiographic imaging apparatus and method of controlling the same

A method of controlling a radiographic imaging apparatus, the method comprising:

• detecting, using a radiographic detector, an energy spectrum of radiographic rays in a discontinuous energy spectrum;
• and
• adjusting, using a controller, a threshold energy by comparing the detected energy spectrum with an eigen energy spectrum of the radiographic rays.

A radiographic imaging apparatus comprising:

• a radiation source configured to transmit radiation at a transmission energy level;
• a detector configured to receive, at a pixel, the radiation at a received energy level;
• a controller configured to store an energy spectrum of the radiation, wherein the energy spectrum is generated by comparing the transmission energy level and the received energy level and determining a difference, generating a correction value using the difference, adjusting the received energy level using the correction value, and storing the adjusted received energy level into the energy spectrum.