Korie Hi
Quiz por , criado more than 1 year ago

Bushong Chapter 26

508
0
0
Korie Hi
Criado por Korie Hi quase 7 anos atrás
Fechar

Digital Fluoroscopy Bushong 26

Questão 1 de 11

1

What are the advantages of digital fluoroscopy over conventional fluroscopy?

Selecione uma ou mais das seguintes:

  • Speed of image acquisition

  • Speed of postprocessing

  • Enhanced image contrast

  • Decrease patient dose

Explicação

Questão 2 de 11

1

Selecione da lista do Menu para completar o texto.

Digital fluoroscopy's tube current is measured in hundreds of mA instead of less than ( 5, 10, 1, 20 ) mA, as in image-intensifying fluoroscopy.

Explicação

Questão 3 de 11

1

What is interrogation time?

Selecione uma das seguintes:

  • The time required for the x-ray tube to be switched on and reach selected levels of kilovolt peak (kVp) and mA.

  • The time required for the x-ray tube to be switched off.

  • The fraction of time that the x-ray tube is energized.

Explicação

Questão 4 de 11

1

Duty cycle is the time required for the x-ray tube to be switched off.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 5 de 11

1

Selecione da lista do Menu para completar o texto.

Pulse progressive fluoroscopy is ( reduces, increases ) patient radiation dose.

Explicação

Questão 6 de 11

1

The sensitive component of a CCD is a layer of crystalline silicon.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 7 de 11

1

Selecione das listas do Menu para completar o texto.

( Progressive mode, Interlaced mode ) produces a sharper image with less flicker than ( interlaced mode, progressive mode ).

Explicação

Questão 8 de 11

1

Selecione das listas do Menu para completar o texto.

( Mask mode, Temporal subtraction, Hybrid subtraction, Time-interval difference (TID) mode, Energy subtraction ): Method of temporal subtraction that results in successive subtraction images of contrast-filled vessels.
( Temporal subtraction, Mask mode, Hybrid subtraction, Time-interval difference (TID) mode, Energy subtraction ): Computer-assisted technique whereby an image obtained at one time is subtracted from an image obtained at a later time.
( Hybrid subtraction, Mask mode, Temporal subtraction, Time-interval difference (TID) mode, Energy subtraction ): Technique that combines two types of subtraction.
( Time-interval difference (TID) mode, Mask mode, Temporal subtraction, Hybrid subtraction, Energy subtraction ): Technique that produces subtracted images from progressive masks and the frames that follow.
( Energy subtraction, Mask mode, Temporal subtraction, Hybrid subtraction, Time-interval difference (TID) mode ): Technique that takes advantage of changing contrast media during the time of the examination and require no special demands on the high-voltage generator. Uses two different x-ray beams alternately to provide a subtraction image that results from differences in photoelectric interaction.

Explicação

Questão 9 de 11

1

Selecione das listas do Menu para completar o texto.

( Conventional, Digital ) fluoroscopy: Images generated directly from x-ray
( Digital, Conventional ) fluoroscopy: Images produced by pulse-progressive fluoroscopy

Explicação

Questão 10 de 11

1

Selecione das listas do Menu para completar o texto.

In conventional fluoroscopy:
- The input phosphor converts ( x-rays, photons, electrons ) into light
- ( Photocathode, Image intensifier, CCD ) converts light into electrons
- Output phosphor converts ( electrons, photons, x-rays ) back into light

Explicação

Questão 11 de 11

1

Selecione das listas do Menu para completar o texto.

In digital fluoroscopy:
- x-rays are converted to ( light, electrons, photons, energy ) by a(n) ( image intensifier, input phosphor, output phosphor )
- ( light, x-ray, electrons, photons ) is converted to electrical signal by CCD

Explicação