Physics 2 Quiz 4.1

15 Questions | Attempts: 32
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  • 1/15 Questions

    Peripheral Gating uses a photo-sensor attached to the patient’s finger to detect the increase in blood volume in the capillaries.

    • True
    • False
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  • 2. 

    MRI techniques to enable vascular visualization of vessels include all of the following except:

    • Subtraction techniques (acquired during systole and diastole – then subtracted) to allow for visualization of vascular structures

    • Gradient echo sequences with gradient moment nulling (for bright blood)

    • Spin echo acquisitions with spatial pre-saturation (for black blood)

    • Inversion recovery techniques for visualization of vessels when fat or water is suppressed

    Correct Answer
    A. Inversion recovery techniques for visualization of vessels when fat or water is suppressed
  • 3. 

    Inversion recovery techniques for visualization of vessels when fat or water is suppressed

    • True

    • False

    Correct Answer
    A. True
  • 4. 

    MRA techniques to visualize blood include all of the following except:

    • TOF-MRA

    • Digital subtraction MRA

    • CE-MRA

    • TSE

    • PC-MRA

    Correct Answer
    A. TSE
  • 5. 

    Since flowing blood appears the same on various types of pulse sequences, conventional MRI can by used to evaluate vascular structures.

    • True

    • False

    Correct Answer
    A. False
  • 6. 

    In an attempt to acquire images with high spatial resolution in acceptable imaging times, CE-MRA’s are acquired with fast, 3D T2 gradient sequences during breath-hold, or dynamically during contrast administration

    • True

    • False

    Correct Answer
    A. False
  • 7. 

    The options to increase contrast between vessels and surrounding tissue are done by exploiting __________ enhancement.

    • Flow-related

    • Vessel

    • Tissue

    • Contrast

    Correct Answer
    A. Flow-related
  • 8. 

    If patient has a fast rate, the RR interval is longer than if patient has slow heart rate.

    • True

    • False

    Correct Answer
    A. False
  • 9. 

    COW sequences are usually associated with low velocity blood flow?

    • True

    • False

    Correct Answer
    A. False
  • 10. 

    In black blood imaging, spin echo sequences are improved by SAT pulses, which ________ the signal from in-flowing blood.

    • Increases

    • Changes

    • Reduces

    • Doesn't change

    Correct Answer
    A. Reduces
  • 11. 

    If heart rate speeds up so that R wave occurs while the system is still acquiring data, the R wave is missed and the effective TR shortens.

    • True

    • False

    Correct Answer
    A. False
  • 12. 

    MOTSA improves coverage and maintains signal from blood flowing within larger volume. MOTSA

    • Multiple Oversampling Thin Section Angiography

    • Multiple Overlapping Thick Section Angiography

    • Multiple Overlapping Thin Section Angiography

    • Multiple Overstepping Thin Section Angiography

    Correct Answer
    A. Multiple Overlapping Thin Section Angiography
  • 13. 

    Black Blood Imaging is also as known as?

    • Phase contrast signal loss

    • Hypo-intense signal loss

    • Time of flight signal loss

    • Hyper-intense signal loss

    Correct Answer
    A. Time of flight signal loss
  • 14. 

    MRA techniques utilize different phenomena to increase signal from flowing spins.  This are _______________? (select all that apply)

    • PC-MRA

    • Triple IR

    • TOF-MRA

    • CE-MRA

    • DS-MRA

    Correct Answer(s)
    A. PC-MRA
    A. TOF-MRA
    A. CE-MRA
    A. DS-MRA
  • 15. 

    If patient’s heart rate is 120 beats per minute, then the R to R interval is?

    • 1000ms

    • 1500ms

    • 100ms

    • 500ms

    Correct Answer
    A. 500ms

Quiz Review Timeline (Updated): Mar 20, 2022 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 04, 2017
    Quiz Created by
    Breanna
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