Part 1 Flashcards
(30 cards)
______is a specialized area where exposed radiographic films are processed. It is designed to be completely devoid of white light to prevent film fogging, ensuring that the film retains its diagnostic quality.
Darkroom
QUALITIES OF A GOOD PROCESSING ROOM
- Adjacent to exposure room
- No windows
- Accessible to plumbing and electrical service
- Away from damp or hot areas
- Proper film handling
- Proper illumination and ventilation
Recommended lead thickness for shielding:
1.6 mm (1/16 inch) lead.
(200 RADIOGRAPH)
The size of the darkroom should be adequate to prevent overcrowding, ensuring efficient workflow and film handling.
15x9.5 FT
It helps in maintaining an organized and efficient workflow, ensuring high-quality radiographs for diagnostic use.
DARKROOM DIVISIONS
Ensures that chemicals, safelights, and film processing conditions are
maintained at optimal levels. Regularly checks for any film artifacts, chemical contamination, or processor malfunctions.
Quality Control Section
Contains a film viewing area where processed radiographs are inspected for quality before storage or diagnosis.
Viewer Side
A designated area for storing processed films and patient records. Proper film archiving methods must be used to ensure easy retrieval and prevent film deterioration.
File Room
o This is the area where unexposed and exposed films are handled.
o It includes film storage, film loading and unloading stations, and areas where cassettes and film holders are managed.
o Safelight illumination Is used to prevent film fogging while still allowing technicians to see.
Dry Section
o This section is dedicated to film processing, including developing, fixing, washing, and drying.
o It houses chemical tanks, an automatic processor (if available), and drainage systems.
Wet Section
______plays a crucial role in preventing unwanted light exposure, which can damage films. It should be designed to maintain a completely light-proof environment while allowing easy access for radiographers.
Darkroom Entrances
o Suitable for small X- ray departments with limited personnel.
o The door must have a secure inside lock to prevent accidental opening during film processing.
o While effective, it requires strict control to prevent light leaks.
SINGLE DOOR
o Consists of a small hallway with two doors: One door leads into the darkroom. The other is used as an exit.
o A mechanical interlock prevents both doors from being open at the same time, ensuring that no light enters the darkroom.
o This design allows continuous film processing without interruptions.
Light Lock or Double Door System
o A zigzag hallway leading into the darkroom, eliminating the need for doors.
o The maze structure prevents external white light from entering.
o Allows for better air circulation while maintaining a dark environment.
o Walls and ceilings are painted with non-reflective paint to reduce any unwanted light reflection.
Labyrinth or Maze Entrance
o Considered the most effective entrance design.
o Features a master door with two openings: One from the outside. One leading into the darkroom.
o The inside door has only one opening, ensuring light protection.
o This design allows for uninterrupted workflow while preventing light leaks.
Revolving Door
_______in a darkroom is essential to facilitate safe film handling while preventing unwanted exposure that could damage image quality.
Proper illumination
Used for general Maintenance activities such as cleaning the room, washing tanks, mixing solutions, placing film in the dryer, and unloading films from hangers.
Typically consists of fluorescent bulbs or small incandescent bulbs that provide bright light when necessary.
White Light
Provides low-intensity illumination that allows technicians to handle films safely without causing fogging.
A lamp housing with a ____ and a _____ is typically used.
Safelight
15- watt bulb
6B filter
______: Used for blue-sensitive films (______). It transmits wavelengths longer than 550 nm.
Amber filter
calcium- tungstate screens
______: Used for green-sensitive films (_____). It transmits light above 600 nm, preventing fogging.
Red filter
rare-earth screens
Mounted on the dry side, emitting light directly toward the work area.
Direct Type
Mounted so that the light is directed toward the ceiling, allowing for reflected light to illuminate the darkroom gently.
Indirect Type
Mounted above and to the rear of the processing tank to check film while in the fixer solution.
Used during the hardening and washing stages of processing to inspect film progress.
Wet Film Illuminator
Walls and ceilings should be painted with non-reflective paint to prevent light from bouncing and unintentionally exposing the film.
If a safelight emits slightly high-intensity spectral quality light, it may interact with reflective surfaces, potentially causing unintended film exposure.
Wall Finish Illuminator
