A mobile unit (portable)
) is a type of radiographic equipment that can be brought to the patient anywhere they may be.
Mobile exams are requested at the bedside
to avoid transporting the patient because of a physical condition
Locations where mobile radiography may be done:
Surgery or Operating room
Intensive Care Unit
Mobile light-duty unit
Often incorrectly described as portable; portable can only be hand carried
Obtain electrical power from wall outlets
Full-power institutional units
More advanced power units use batteries from a power supply and are capable of greater voltage
Standard power source, capacitor discharge, non-motor driven units are available without battery power
Powered by 10-16 rechargeable sealed, lead-acid 12 volt batteries connected in series
Variable speeds up to 2.5 - 3 MPH
Driving range of up to 10 miles on full charge
Dual drive motors
Operate the two drive wheels
Lower speed for forward and reverse
Close quarter maneuverable
Must be plugged in when not in use
110 or 220 volt option
110-volt 5-amp outlets take 8 hours
Stores electrical charge when plugged in, discharges electrical energy across the x-ray tube when exposure is initiated
Device for electrical production of x-rays requires four necessary conditions which include
Source of electrons
An appropriate target material
A high voltage
Allows technologist to control the x-ray tube current and voltage so that the useful x-ray beam is of proper quantity and quality
Wear a lead apron when operating a
portable unit and provide lead aprons for the patient, staff, and other close patients
What major precautions must be observed when imaging a patient in special units, i.e. ICU, NICU, CCU, or PACU?
Minimal movement of the patient is very important, don't move special equipment or monitoring devices, observe isolation procedures.
What are the components of a mobile set?
What is the standard power source for a capacitor non-motor driven x-ray unit?
110 volt, 15 amp or 220 volt, 10 amp power source
What is the range for a self-propelled x-ray system when operated on batteries with a full charge?
10 miles at a speed of 2.5-3.0 mph
What is used to power mobile x-ray machines when AC power isn't available?
10-16 rechargeable, sealed, lead-acid 12 volt batteries connected in series
What is the difference between mobile and portable x-ray equipment?
portable" means to be carried or easily moveable. "Mobile" units used today may weigh up to 1000lbs or more