What is Digital Radiography (DR)?

Digital Radiography (DR) is an advanced X-ray imaging technique in which digital detectors capture X-rays and convert them directly into digital images that can be viewed on a computer within seconds.
(डिजिटल रेडियोग्राफी (डीआर) एक उन्नत एक्स-रे इमेजिंग तकनीक है जिसमें डिजिटल डिटेक्टर एक्स-रे को कैप्चर करते हैं और उन्हें सीधे डिजिटल छवियों में परिवर्तित करते हैं जिन्हें कुछ ही सेकंड में कंप्यूटर पर देखा जा सकता है।)

Basic Principle :-

• X-rays pass through the patient’s body.
• A digital detector receives the X-rays.
•  The detector converts X-ray energy into electrical signals.
• A computer processes these signals to create a digital image.
• The image is displayed instantly on a monitor.

Types of Digital Radiography

1. Direct Digital Radiography (DDR)
Uses flat-panel detectors.
Images appear almost instantly.
Most common modern DR system.
2. Computed Radiography (CR)
Uses imaging plates instead of film.
Plates are processed in a CR reader to produce digital images.

Advantages-
  Faster image acquisition.
  Better image quality.
  Lower radiation dose compared to many conventional systems.
  Easy image storage and sharing.
  Digital image enhancement (zoom, contrast adjustment, measurements/window level adjustment).

Disadvantages-
  Higher  equipment cost.
  Requires computer systems and data storage.
  Detector damage can be expensive to repair.

Applications
Chest X-rays
Abdomen X-rays
Joints X-rays
Skeletal imaging
Dental radiography
Emergency and trauma imaging
Orthopedic examinations.

Digital Radiography Block Diagram

X-ray Tube
     ↓
 Patient
     ↓
Digital Detector
     ↓
Computer Processing
     ↓
Monitor Display

Definition: Digital Radiography (DR) is an X-ray imaging system that uses electronic detectors to produce and display digital images instead of traditional film.

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