1. INTRODUCTION 1. digital radiography의 정의 2. conventional radiography에서 digital radiography로의 전환배경 3. conventional radiography와 비교한 DR의 장점 2. DIGITAL RADIOGRAPHY익 분류 1. film digitizer based DR 2. storage phosphor based DR 3. image intensifier based DR 4. scanned projection radiography 3. COMPONENTS OF DR SYSTEM 1. 영상획득 (image acquisition) 2. 영상처리 (image processing) 3. 영상출력 (image display) 4. 영상저장 (image archive) 4. IMAGE INTENSIFIER BASED DR 1. digital fluoroscopic system 2. digital image