Types of Exposure Devices (8)

Question 1

Cable Operated Exposure Device (Cable-drive)

Answer 1

Capsule: is attached to a pigtail (includes a locking ball, Teleflex cable and a connector).

Operation:
Source is projected to the end of guide tube using a drive cable and crank.

Question 2

Pneumatically Operated Exposure Device (Air-Drive)

Answer 2

Capsule: not attached to any cables, just a dummy source.

Operation: Source is projected to end of an attached guide tube using a pneumatic pump and drive tube.

Question 3

Inspection prior to operating a Cable-drive exposure device

Answer 3

1. verify radiation levels around device walls
2. inspect female pigtail connector (use GO NOGO gauge)
3. inspect ancillary equipment (guide tube, drive cable, connectors, nuts + screws, locking mechanism)

Question 4

Inspection prior to operating a Air-drive exposure device

Answer 4

1. verify radiation levels around device walls
2. inspect ancillary equipment (guide tube, drive tube, connectors, nozzle)
3. extend drive and source guide to full length while connected together and pump to ensure clear tubes
4. disconnect tubes, insert a dummy source capsule, project to ensure free movement.

Question 5

Parts of a cable drive exposure device

Answer 5

• Pigtail

- Crank

Question 6

Parts of a air drive exposure device

Answer 6

• Guide tube
• Drive tube
• Pump handle
• Foot hold
• Source carrying tube (control tube + source carrier tube)