Evaluation of Image Quality Using Step Wedge and Parameters of Tube Current and Exposure Time at Constant Tube Voltage

This study investigates how tube current (mA) and exposure time (s) influence radiographic image quality, using a three-step aluminum step wedge at a constant tube voltage of 60 kV. We measured radiographic densities across varying exposure parameters to evaluate contrast and resolution. Our findings show that increasing tube current and exposure time improves image density and contrast. However, excessive exposure can lead to saturation. We observed optimal image quality at mAs values between 10 and 15.