Fluoro Lecture 2 Flashcards
What are the two different ways to monitor images?
- Mirror Optical System
2. T.V Monitoring System
How do we couple the T.V camera tube to the OP of the Image Intensifier so we get bright light directly from the OP into the T.V camera?
- Make sure T.V camera is the same diameter as the OP
What are two methods of Coupling the T.V camera to the OP?
- Fiber Optic System
2. Lens System
What are Fiber Optics?
- Glass strains that take the light signal and send it wherever you want it to go
- Small, compact, easy to manipulate
What are disadvantages of the Fiber Optic System?
Cannot accommodate Auxiliary Imaging systems
Ex: Cine camera, Photo Spot film camera
Which one is larger, the Fiber Optic System or the Lens System?
The Lens System
Out of the Lens System and the Fiber Optic System. Which one needs to be handled with more care?
The Lens System
How does the Lens System work?
Accepts light from the OP and converts it into a Parallel beam
When using the Lens System how can the image be interrupted?
By a Beam Splitting mirror (a series of mirrors to direct the image) so only a portion (10-90%) is transmitted to the TV camera
When using a beam splitting mirror 10-90% of the image is transmitted to the TV Camera, what happens to the remainder of the image?
It is sent to a Spot Film
In the spot film camera, what size film is used?
70mm or 105mm
What are the (3) ways to record an image?
- Spot Film Recorder/ Cassette
- Spot Film Camera
- Cinefluorography (Movie Camera)
What is the standard size of a Spot Film Recorder film?
9 1/2 x 9 1/2”
What size cassettes could the spot film recorder take?
Varying sizes
What size spot films do we use today?
10 x 12”
When a cassette is in the fluoro tower, but pictures are not being taken, what is this called?
The park position
During Fluoro what is protecting the cassette, to allow it to be in the park position?
A sheet of lead
How much is the time delay when taking a spot picture?
3/4- 1 sec
What is the delay for when taking a spot film?
Its the time required to move the cassette into position and make it stationary
Where is the rotor during fluoro?
Under the table
How fast are x-ray tubes designed to run at?
3,600 rpm
How fast do the rotors run during fluoro?
A few hundred rpm
What are the (3) things that need to happen during the time delay?
- Position (cassette)
- Speed (rotor)
- mA (goes up)
What are the (5) parts of the Cine Camera?
SALPP
- Shutter- opens/ closes
- Aperture- opening/ light goes in
- Lens-
- Pulldown arm- grabs & moves cassette down
- Pressure Plate- holds plate stationary/ releases
