Mobile x-ray equipment

Question 1

Mobile equipment (3)

Answer 1

Hospital uses
Motor driven
Exposue output less than static units

Question 2

Portable equipment (3)

Answer 2

Home visits, military and veterinary work
Can be carried and set up
Low exposure output

Question 3

Disadvantages of Portable units 4

Answer 3

Restricted exposure factors
Low kV
Inability to select very short exposure times
Inability to use unit for long period of time to prevent damage

Question 4

Mobile x-ray equipment components: Generator 2

Answer 4

Constant potential

High frequency generator

Question 5

Mobile x-ray equipment components: The drive units 3

Answer 5

Motor driven or motor assisted
Capability to be accommodated in limited spaces
Beam limiting device/collimator

Question 6

High frequency generator workflow

Answer 6

Mains AC > Rectifier > Inverter > High voltage transformer > X-ray tube

Question 7

Rectifier 2

Answer 7

An electrical device that converts alternating current (which reverses direction) to direct current (which follows in one direction)

Process called Rectification

Question 8

Inverters 2

Answer 8

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

Question 9

High voltage transformer 2

Answer 9

The transformer steps up the AC voltage

converts AC back to DC and smoothened

Question 10

Mobile x-ray equipment components: Range of X-ray tube movement 4

Answer 10

Ease of use
Cross arms movement
Rotation around the axis of the cross arm
Angulation across the long axis of the tube

Question 11

Problems with restricted X-ray tube movement 3

Answer 11

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

Question 12

Mobile x-ray components: cable storage

Answer 12

Cable to supply battery charging functions

Question 13

Mobile x-ray components: electrical supply

Answer 13

standard 240-volt single phase

Question 14

Digital mobile x-ray equipment 4

Answer 14

Flat panel DR detector
Provides HD resolution
Touch screen monitor
Facility for image processing

Question 15

Advantages of digital mobile x-ray equipment 4

Answer 15

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

Question 16

Cons of Analogue x-ray machine 2

Answer 16

poorer image quality compared to new digital systems

complicated reproduction and storage of x-ray images

Question 17

Pros of Analogue x-ray machine 2

Answer 17

fully developed tech

relatively inexpensive

Question 18

Cons of digital x-ray machine

Answer 18

Different image formats: makes it difficult to share

High acquisition cost

Question 19

Pros of digital x-ray machine

Answer 19

simple data storage

low radiation exposure