22/11/2025
*What are Flat-Panel Detectors?*
Flat-panel detectors (FPDs) are digital X-ray imaging devices that convert X-ray energy into electrical signals, which are then used to produce high-quality digital images. They are widely used in medical imaging applications, such as radiography, fluoroscopy, and mammography.
*Types of Flat-Panel Detectors:*
1. *Indirect Conversion FPDs*: These detectors use a scintillator material (e.g., cesium iodide or gadolinium oxysulfide) to convert X-rays into visible light, which is then detected by a photodetector (e.g., amorphous silicon or CMOS). Examples include:
- Amorphous silicon (a-Si) FPDs
- CMOS (Complementary Metal-Oxide-Semiconductor) FPDs
2. *Direct Conversion FPDs*: These detectors convert X-rays directly into electrical signals using a photoconductor material (e.g., amorphous selenium). Examples include:
- Amorphous selenium (a-Se) FPDs
*Advantages of Flat-Panel Detectors:*
- High image quality
- Low dose requirements
- Fast image acquisition
- Digital image processing capabilities
- Compact and lightweight design
*Applications:*
- Medical radiography (e.g., chest X-rays, orthopedic imaging)
- Fluoroscopy (e.g., real-time imaging for procedures)
- Mammography (e.g., breast cancer screening)
- Industrial non-destructive testing (e.g., inspecting internal structures
# # # Hassam Choudhary ULTRASOUND GROUP Nyam Luka Maheen Sania ULTRASOUND FOR BEGINNERS International Society of Ultrasound in Obstetrics and Gynecology (ISUOG)
