Digital Radiography: Physical Principles And Qu... May 2026

: Images consist of a matrix of small squares called pixels . Smaller pixels and larger matrices generally improve spatial resolution , allowing for finer detail.

: Uses a photostimulable phosphor plate within a cassette. X-rays create a "latent image" that is later scanned by a laser to release light, which is then digitized.

: Captures images directly using fixed sensors. These systems can use direct conversion (converting X-rays to electrical charge via amorphous selenium) or indirect conversion (converting X-rays to light first using a scintillator like cesium iodide). Digital Radiography: Physical Principles and Qu...

Digital imaging relies on the conversion of X-ray energy into electronic signals that can be processed by a computer. :

Advances in digital radiography: physical principles ... - PubMed : Images consist of a matrix of small squares called pixels

Digital radiography (DR) has revolutionized medical imaging by replacing traditional film-based systems with digital sensors that provide immediate image acquisition and high-speed processing. Understanding its physical principles and maintaining strict quality control (QC) is essential for maximizing diagnostic quality while minimizing patient radiation dose.

QC programs ensure that equipment consistently adheres to performance standards and safety regulations. X-rays create a "latent image" that is later

: Digital detectors have a wide dynamic range , meaning they can capture a vast range of X-ray exposures. Detective Quantum Efficiency (DQE) measures how efficiently the system converts X-rays into a quality image; higher DQE results in excellent contrast at lower radiation doses. Quality Control (QC) Procedures