Digital radiography (radiology)

1.  Filmless imaging sysytem
 Digital x-ray sensors are used
 First DR application is the invention of CT in
1967 by Godfrey hounsfield

2. DIGITAL RADIOGRAPHY, ITS ADVANTAGES AND
DISADVANTAGES.
FIRDOUS NAZIR
M.SC MIT
JAMIA HAMDARD UNIVERSITY
NEW DELHI.

3.  A source of radiation
 A computer
 Digital sensor

5.  Digital detector absorb x-ray energy
 Transferred into electrical charges
 Electrical charges are recorded,Digitalized &
quantified energy deposited on a detector.
 Raw data is converted in clinically meaningful
images by a post processing sofware.

6.  1) FLAT PANEL DETECTORS
INDIRECT FPDS DIRECT FPDS
2) HIGH-DENSITY LINE DETECTOR

7. INDIRECT FPDSFig
DIRECT FPDS

10.  DR is new tech. & CR is old
 Both CR and DR use a medium to capture x
ray energy and both produce digital image
that can be enhanced for soft copy diagnosis
or further review
 DR can present image in seconds of exposure
 CR is slower than DR & has less resolution
with a similar dose.
 DR utilizes lower dose for a comparable
image than image

11.  LESS RADIATION
 ABILITY TO ENHANCE IMAGE
 COMMUNICATION
 PORTABILITY
 TIME & PRODUCTIVITY SAVING
 NO MORE LOST IMAGE

12.  MORE EXPENSIVE
 DETECTOR CANNOT BE STERLIZED
 THICKNESS OF THE SENSOR
 LEARNING TO USE THE CONCEPT


13.  GENERAL RADIOGRAPHY
 ALSO USED IN DENTAL RADIOGRAPHY &
MAMOGRAPHY

14. ORAL SENSOR

15.  DR Is the latest advancement in radiographic
imaging in dentistry
 The quality of image produced remains
dependent on technical skills of clinician
 Dr systems utilize computer technolgy &
radiation sensitive detector that capture the
image, Convert it into numeric data & permit
image display on a monitor.
 Digital image may be enhanced once acquired
conviniently stored, assesed, printed or
transmitted

16.  Reduce patient exposure
 Eliminates the need of the darkroom &
chemical processing.

17.  THANK YOU