Module 12 - Week 18 - Mobile Units Flashcards
(20 cards)
What are the three core components of all portable x-ray units?
Operating console, x-ray tube, and generator.
What type of receptor is used in DR portable units?
Wireless digital DR detector.
What part of the mobile unit displays battery status and allows technical factor selection?
Control panel with charge indicator.
What safety equipment must be on the mobile unit before use?
Lead apron (and thyroid collar if available).
How far must a technologist stand from the x-ray source during mobile exposure?
At least 2 meters (6 feet).
What is the purpose of collimating to 4-sided borders?
To minimize radiation exposure and improve image quality.
What should a technologist announce before taking a mobile x-ray?
“X-ray in room ___.”
What type of exposure control is used in mobile radiography?
Manual technique (no AEC).
How is the mobile unit powered when not in use?
It must be plugged into a wall outlet to charge.
What power design provides consistent output and no leakage radiation?
High-frequency battery-powered units.
What power design may cause radiation leakage and output inconsistency?
Capacitor-discharge units.
What mobile feature allows image review and PACS upload at bedside?
Touchscreen monitor with RIS access.
What does the emergency stop button on a mobile unit do?
Immediately stops radiation and motor movement.
What component allows fine adjustment of the tube arm?
Adjustment buttons on the tube arm system.
What motion safety feature prevents runaways when moving downhill?
Automatic deceleration.
What is the most common portable radiographic exam?
Chest x-ray.
Why should mobile x-rays only be done when transfer is unsafe?
To avoid risks like line/tube dislodgement and limited support during transfer.
What risk increases with portable vs. department imaging?
Radiation exposure to others and reduced image quality.
How is the direction and speed of the mobile unit controlled?
Pressure-sensitive drive handle and safety switch.
What should be done immediately after using a mobile unit?
Plug it in to recharge.
