Types of Mobile Equipment Flashcards

1
Q

What is a true portable unit?

A
  • Truly portable, carry-able in two suitcases
  • Separate parts to be rebuilt and reconnected
  • Tube stand, base, rack and pinion, cross arm
  • Tank construction of tube and HT circuit
  • Control box, timer, meters, etc
  • Low voltage multicore cabling
  • Stationary anode tube, 1.5 mm focus
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2
Q

What are the advantages of a true portable unit?

A
  • Cheap (appox. £5000) and simple

* Can be connected to a conventional 13A power supply

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3
Q

What are the disadvantages of a true portable unit?

A
  • Long exposure times

* Time consuming to rebuild

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4
Q

What is a conventional mains dependent unit?

A
  • 5 wheels, motor driven forward and reverse,
  • Drive power from 12 V car batteries
  • disc brakes
  • antitamper lock and key
  • weight 408 kg
  • cable compartment with 10 m of mains cable
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5
Q

What are the advantages of a conventional mains dependent unit?

A
  • High output
  • Very flexible and manoeuvrable
  • Motorised
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6
Q

What are the disadvantages of conventional mains dependent units?

A
  • Limited to 30 A power outlets

* Expensive, approx £15,000

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7
Q

What are the advantages of a high frequency mains dependent mobile unit?

A
  • Small, light and compact
  • very manouverable
  • very simple controls
  • reasonable price £8,500
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8
Q

What are the disadvantages of a high frequency mains dependent mobile unit?

A
  • middle range output at 5.6 kW
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9
Q

What are the advantages of a capacitor discharge mobile unit?

A
  • Reasonable output

* usable with any old 13 A supply

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10
Q

What are the disadvantages of a capacitor discharge mobile unit?

A
  • Discharge waveform means that the end of the exposure is at a lower potential
  • Limitations in high mAs and techniques might have to be modified
  • Expensive, approx £25,000
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11
Q

What are the advantages of a mains independent (battery) mobile unit?

A
  • Total independence of power supply for daily working

* High exposure output

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12
Q

What are the disadvantages of a mains independent (battery) mobile unit?

A
  • Expensive, approx £26,000

* Batteries don’t seem to last long, approx 18 months

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13
Q

What are the advantages of a digital mobile radiography system?

A
  • Images can be evaluated immediately after exposure
      • repeats can be instantly retaken
  • Immediate information before taking next image or step
  • Images can already be labelled to patient’s information
  • Images can be quickly sent to PACS afterward
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