This thesis studies different ways of digital image acquirement and analyzes various factors influences on image forming quality during imaging process, for example, it investigates digital camera CCD hot pixel and scanner detection problems and establishes scan parameters.

Objective To compare the imaging quality and the anatomic detail in thoracolumbar spine of amorphous selenium flat-panel detector digital radiography(DR) system and computed radiography(CR) system.

To study factors influencing DSA image quality in gastrointestinal hemorrhage;

Effect of increase in thickness of additional Al filtration on X-ray image quality and patient doses;

Image quality evaluation system for coronary magnetic resonance angiography;

Analysis of evaluation on imaging quality of visual system;

Analysis of the influence factors for MR imaging quality;

Applying of low-frequency signal to improve imaging quality below shielding high-velocity basalt;