Mobile Equipment

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A mobile unit (portable)

) is a type of radiographic equipment that can be brought to the patient anywhere they may be.

Portable means

to be carried or easily movable.

The usual type of mobile units used today may weigh up to

1000 pounds or more

Mobile exams are requested at the bedside

to avoid transporting the patient because of a physical condition

Locations where mobile radiography may be done:

Emergency room
Surgery or Operating room
Intensive Care Unit
Bedside

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

Battery operated

Powered by 10-16 rechargeable sealed, lead-acid 12 volt batteries connected in series

Battery Driven

Self-propelled systems
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

Parking brake

Automatically engaged when not in use or in charging mode

Re-charging

Must be plugged in when not in use
110 or 220 volt option
110-volt 5-amp outlets take 8 hours

Capacitor-discharge system

Stores electrical charge when plugged in, discharges electrical energy across the x-ray tube when exposure is initiated

Standard power source operates on

110v,15a or 220v,10a power source

Mobile c-arm fluoroscopy units are extremely popular for

surgical procedures

C-arm

Most commonly used in the Emergency and Operating rooms

X-ray tube

Device for electrical production of x-rays requires four necessary conditions which include
Source of electrons
An appropriate target material
A high voltage
A vacuum

Operating Console

Allows technologist to control the x-ray tube current and voltage so that the useful x-ray beam is of proper quantity and quality

Capacitor-discharge units produce

a constant potential output

Battery-powered units produce

output that is essentially 3 phase

Drive system

Power is available to drive the unit itself with a battery powered unit

Wear a lead apron when operating a

portable unit and provide lead aprons for the patient, staff, and other close patients

Announce

X-ray!" before making the exposure

Stand at least 6 feet away

from the x-ray source
Maximum allowable distance is preferred

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?

X-ray tube
Operating console
High-voltage generator
Drive system

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

Why is mobile x-ray equipment considered transportable

The mobile equipment can be brought to the ER, to the patients bedside, or to the OR for surgical procedures, wherever the patient may be.

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