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

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

: 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).

QC programs ensure that equipment consistently adheres to performance standards and safety regulations. Digital Radiography: Physical Principles and Qu...

Advances in digital radiography: physical principles ... - PubMed

Digital imaging relies on the conversion of X-ray energy into electronic signals that can be processed by a computer. : : Images consist of a matrix of small squares called pixels

: 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.

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. These systems can use direct conversion (converting X-rays

: 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