Objectives
Digital Imaging
Development of Digital Imaging
Digital Imaging Techniques
CR & DR imaging
Methods to Digitize an Image
Computed Radiography Terms
Fundamentals of Computerized Radiography
CR IR
CR latent image formation
What Is Digital Imaging?
IMAGE CREATION
CR BASICS
ID STATION
CR Readers AKA CR Processors
CR – PSP plate
Imaging Plate (IP)
Imaging Plate Construction
Active Layer - Crystals
Acquiring the Image
Acquiring the Image cont
Imaging Plate Construction
Cross section of a PSP screen
IP Design
Photostimulable Luminescence
CR Reader – PSP plate
Sequence of CR imaging
How CR works
ERASING THE SCREEN
Basics of Digital Images
Pixels
Pixel
Pixels
Digital Images – Bit Depth
Digital - Grayscale
Computed Radiography
Improving Signal-to-Noise Ratio
Screen / Film
Characteristic Curve
S/F fundamental principle
Speed Class
Dose Implications
Dose Implications
POST PROCESSING
Workstation Menu
Wrong Algorithm
Histogram Analysis
Initial Image Processing
EDR
Exposure Indicators
Exposure Values
EXPOSURE VALUES
Using Exposure Numbers
Exposure Numbers
Histogram Analysis
Characteristic curve & histogram
Histogram with H&D curve
Underexposed
Overexposed
Just right!
Changes to Histogram
LUT
LUT
Automatic rescaling
LUT
Myths for CR #1 & 2
Contrast
Using Higher k. Vp with Digital
k. Vp Selection
k. Vp Selection
k. Vp ranges for CR
Collimation
Myths for CR #3
Shuttering
Collimation
Myths for CR #4
Myths for CR #5
Myths for CR #6
Myth for CR #7 & 8
ADVANTAGE OF CR/DR vs FS
ADVANTAGE OF CR/DR
Image Preprocessing
Improves Exam Times ?
High resolution with digital imaging
Questions ?
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