1. DIGITAL RADIOGRAPHY
Dr. Rupak Sethuraman

2. Specific Learning Objective
What is meant by digital
What is analog to digital conversion
Pixel and its importance
Variations that can be done using computers

3. CONTENTS Introduction Digital / analog Types of digital radiography
Equipment
Image processing
Advantages and disadvantages
Applications
Future prospects
Conclusion

4. X-rays
Subject
Differential
absorption
Image receptor

5. 8th Nov 1895
1987
Dr Frances Mouyens

6. Definition – A filmless imaging system ; a method of capturing a radiographic image using a sensor , breaking it into electronic pieces and presenting and storing the image using a computer.

7. ANALOG (CONVENTIONAL FILM) Vs. DIGITAL

10. QUANTIZATION

12. TYPES DIGITAL IMAGING DIRECT INDIRECT
Storage phosphor imaging (SEMIDIRECT)

13. EQUIPMENT + +
Patient & X-ray machine Sensor Computer =
Digital image

15. DIRECT DIGITAL RADIOGRAPHY CHARGE COUPLED DEVICE

16. Analog to Digital Converter (ADC) Image readout X-rays Scintillator
Fiber optic
Semiconductor
chip (CCD/CMOS)
Image readout
Direct data link to
the computer