Mobile x-ray equipment Flashcards
Mobile equipment (3)
Hospital uses
Motor driven
Exposue output less than static units
Portable equipment (3)
Home visits, military and veterinary work
Can be carried and set up
Low exposure output
Disadvantages of Portable units 4
Restricted exposure factors
Low kV
Inability to select very short exposure times
Inability to use unit for long period of time to prevent damage
Mobile x-ray equipment components: Generator 2
Constant potential
High frequency generator
Mobile x-ray equipment components: The drive units 3
Motor driven or motor assisted
Capability to be accommodated in limited spaces
Beam limiting device/collimator
High frequency generator workflow
Mains AC > Rectifier > Inverter > High voltage transformer > X-ray tube
Rectifier 2
An electrical device that converts alternating current (which reverses direction) to direct current (which follows in one direction)
Process called Rectification
Inverters 2
They ensure that too much or too less of voltage from the conventional supply doesn’t harm the gadgets.
A power inverter converts DC into AC for better functioning of the device
High voltage transformer 2
The transformer steps up the AC voltage
converts AC back to DC and smoothened
Mobile x-ray equipment components: Range of X-ray tube movement 4
Ease of use
Cross arms movement
Rotation around the axis of the cross arm
Angulation across the long axis of the tube
Problems with restricted X-ray tube movement 3
patient confined to small cubicles challenge
lack of tube height means SID<180cm for CXR
Most patients are either supine or semi erect which degrades image quality
Mobile x-ray components: cable storage
Cable to supply battery charging functions
Mobile x-ray components: electrical supply
standard 240-volt single phase
Digital mobile x-ray equipment 4
Flat panel DR detector
Provides HD resolution
Touch screen monitor
Facility for image processing
Advantages of digital mobile x-ray equipment 4
Basic image processing functions can be performed directly
Images are available within 5 sec on integrated control monitor
Bedside quality control
Viewing and archiving of images via PACS
