Download Question: How does a radiographic image get on a film?

Introduction to RDSC 235
Chapter 5, pp 88-91 (To “Power for…”)
Two types of equipment to generate x-rays
Diagnostic – To find disease
Therapeutic (Radiation Therapy) – To treat disease
Two types of diagnostic equipment
Radiographic – Still images: single or serial
Fluoroscopic – In motion
Patient’s head
on your left
Tables
Table tops:
- Radiolucent – x-rays pass through readily
- Made of bakelite or carbon graphite fibers
- Flat or curved (curved for fluoro)
- Adjustable (height)
- Compression band (accessory)
Tables
- Fixed or tilting – Tilting 90-15.
Tilting on fluoro units
- Footboard – removable
- Hand grips/shoulder supports
- Tops are floating (rad) or
motorized (fluoro)
Tables
- Bucky tray
- Automatic Exposure Control (AEC)
Collimator: Positioning light
& shutters for beam restriction
Suspension and Support
- Ceiling mounted (overhead) –
moves all directions on rails: vertical
longtitudinal, transverse,
- Floor to ceiling
- Floor mounted
Upright film holders
- Upright bucky (cassette holder). Used in radiograph
rooms instead of tilting tables
- Detent – Lock for aligning the tube and film (detector)
Parts of a Fluoroscope
Vidicon or Plumbicon Camera
(or CCD if digital)
Reflecting or
beam splitting
Mirror
Spot Film Camera
Image Intensifier (II)
Spot Film Device
X-ray tube under table
Fluoroscopy
Mirror
Optics
Fluoroscopy (Radiographic Fluoroscopic or R/F)
Mobile radiography (Portables)
ER
OR
ICU
Neonatal ICU
Any room, any floor
Nursing homes
Prisons
C-arms (Portable R/F)
R/F Digital C-Arm
Mammography
Cardiovascular Interventional
Technology (CVI)
Cardiovascular Interventional A C-arm Fluoroscope
Video
camera
Image intensifier
Cine
camera
Patient table
X-ray
tube
CCD II
Computed Tomography (CT)
X-ray tube and detectors
(all digital)
3D or Volumetric Imaging
After loading volumetric
data, an image may be
rotated on the screen,
and displayed from any
perspective
3D or Volumetric Imaging
3D images help surgeons
visualize the extent of
injury.
This trauma victim has
numerous facial
fractures. The extent of
injury is easier to
appreciate in 3D
3D or Volumetric Imaging
CT scan of Joseph Merrick’s
(the elephant man) skull.
3D or Volumetric Imaging
Extras