Mock 1.8

21 Questions

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Questions and Answers
  • 1. 
    In order to reduce signal from background tissue, __________ is an option often used.
    • A. 

      Gradient moment nulling

    • B. 

      Inferior saturation pulse

    • C. 

      Magnetization transfer

    • D. 

      High "b" value

  • 2. 
    Contrast enhancement can be helpful for the evaluation of vascular structures, however, timing is essential for the evaluation of __________.
    • A. 

      Arteries

    • B. 

      Veins

    • C. 

      Capillaries

    • D. 

      All vessels

  • 3. 
    In a ramped flip angle acquisition, the flip angle is __________ over the imaging voxel in the direction of blood flow.
    • A. 

      Constant

    • B. 

      Always low

    • C. 

      Always high

    • D. 

      Varied

  • 4. 
    MOTSA technique is also known as __________.
    • A. 

      Minimal Oversampling of Transient iSchemic Attacks

    • B. 

      Multiplanar TOtal Sectional Angiography

    • C. 

      Multiple Overlapping Thin Section Angoigraphy

    • D. 

      Magnetic Overview of Transient Stenosis Areas

  • 5. 
    Multi-slab techniques combines __________.
    • A. 

      The coverage of 2D TOF with the resolution of 3D TOF

    • B. 

      The coverage of 3D TOF with the resolution of 2D TOF

    • C. 

      Black blood angiography with gradient echo MRA

    • D. 

      Time of flight with phase contrast

  • 6. 
    Phase contrast (PC) techniques rely on __________ to differentiate stationary spins from flowing spins.
    • A. 

      Flow related enhancement

    • B. 

      Velocity induced phase shifts

    • C. 

      Vascular occlusion

    • D. 

      Spin echo techniques

  • 7. 
    Phase contrast (PC) techniques use of bipolar gradient systems that __________ stationary tissue in one polarity then visa versa.
    • A. 

      Saturate and complement

    • B. 

      Highlight and enhance

    • C. 

      Dephase, and rephase

    • D. 

      Cover and uncover

  • 8. 
    In Phase contrast (PC) techniques when the acquisition is encoded for flow right to left, blood flowing from right to left will appear __________ and blood flowing from left to right will appear __________.
    • A. 

      Bright / dark

    • B. 

      Dark / bright

    • C. 

      Dark / dark

    • D. 

      Bright / bright

  • 9. 
    In Phase contrast (PC) techniques when vessels appear bright or dark, depending upon the flow direction, this technique is known as the __________.
    • A. 

      "complex difference".

    • B. 

      "phase difference"

    • C. 

      MIP

    • D. 

      MPR

  • 10. 
    In Phase contrast (PC) techniques when all vessels appear bright, regardless of the flow direction, this technique is known as the __________.
    • A. 

      "complex difference"

    • B. 

      "phase difference"

    • C. 

      MIP

    • D. 

      MPR

  • 11. 
    The MRA technique that acquires information about flow velocity and direction is __________.
    • A. 

      PC

    • B. 

      TOF

    • C. 

      Black blood

    • D. 

      Contrast enhanced

  • 12. 
    The parameter used in MRA to allow for the evaluation of vascular flow velocity is known as the __________.
    • A. 

      MIP

    • B. 

      MPR

    • C. 

      "B" value

    • D. 

      VENC

  • 13. 
    The major advantage(s) of phase contrast include(s): __________.
    • A. 

      Complete suppression of background (non-flowing) spins

    • B. 

      The ability to acquire information relating to flow direction and vascular lesions with multidirectional flow

    • C. 

      The ability to image slow or fast flow

    • D. 

      All of the above

  • 14. 
    Which one do you like?
    • A. 

      Long imaging times

    • B. 

      The inability to image high velocity flow

    • C. 

      The inability to image in-plane flow

    • D. 

      All of the above

  • 15. 
    2D PC MRA can be acquired in __________.
    • A. 

      10-15 minutes

    • B. 

      2 minutes

    • C. 

      2 seconds

    • D. 

      10-15 milliseconds

  • 16. 
    Typically 2D PC sequences are acquired for the evaluation of the __________.
    • A. 

      Carotid arteries

    • B. 

      Jugular veins

    • C. 

      Circle of Willis

    • D. 

      Superior sagittal sinus

  • 17. 
    In MRI, ciné acquisitions, are generally acquired for the evaluation of __________.
    • A. 

      Real-time MRA

    • B. 

      The heart

    • C. 

      Functionality of moving structures of the body

    • D. 

      All of the above

  • 18. 
    Most cardiac cine images are acquired with gradient echoes that are __________.
    • A. 

      Retrospectively gated

    • B. 

      Prospectively gated

    • C. 

      Respiratory gated

    • D. 

      All of the above

  • 19. 
    In a cardiac ciné acquisition where the patient's heart-rate is 60 BPM and the TR is 25 ms, how many phases of the cardiac cycle can be acquired __________.
    • A. 

      12 phases

    • B. 

      25 phases

    • C. 

      40 phases

    • D. 

      There is no way to know how many phases can be acquired

  • 20. 
    The temporal resolution is the __________.
    • A. 

      Resolution over time

    • B. 

      Spatial resolution

    • C. 

      Resolution over location

    • D. 

      Contrast resolution

  • 21. 
    The technique that is utilized for the evaluation of range of motion in joints is known as __________.
    • A. 

      Cardiac ciné

    • B. 

      Musculoskeletal ciné

    • C. 

      MR arthrography

    • D. 

      Multpilanar reconstruction