ADVANCED PULSE SEQUENCES AND ECHO FORMATION QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
0 view 0 purchase
Course
GXMO
Institution
GXMO
ADVANCED PULSE SEQUENCES AND ECHO FORMATION QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
Which of the following can be achieved by using gradient-echo pulse sequences? - ANSWER Improve temporal resolution
The inversion recovery pulse sequence that is used to suppress CSF in proton density and T2-w...
ADVANCED PULSE SEQUENCES AND ECHO
FORMATION QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
Which of the following can be achieved by using gradient-echo pulse sequences? - ANSWER Improve
temporal resolution
The inversion recovery pulse sequence that is used to suppress CSF in proton density and T2-weighted
images is known as what? - ANSWER FLAIR
Balance gradient echo is utilized to reduce the effects of: - ANSWER Phase Dephasing
Dixon technique can be used to produce ____________ images.
A. Out phase imaging
B. Water suppression
C. Fat suppression
D. All answers are correct - ANSWER All answers are correct
Which is not a concern with EPI pulse sequences? - ANSWER Increase in body temperature
Chemical saturation is more effective in _ T magnet - ANSWER 3T
Which of the following pulse sequences is the most affected by susceptibility, ghosting, chemical shift
effects? - ANSWER SS-GRE-EPI
Why GRE is the best imaging option to detect hemorrhages? - ANSWER GRE does not use 180 re-phasing
pulses and is more susceptible to hemorrhagic blood
Which of the following is an advantage of gradient echo pulse sequences?
, A. Decreased scan time
B. Increased sensitivity to flow
C. Volume acquisitions possible
D. All answers are correct - ANSWER All answers are correct
Chemical saturation technique is achieved by applying: - ANSWER A 90° RF pulse at the beginning of the
sequence to the tissues being saturated.
In a 1T magnet: What is the chemical shift between fat and water? - ANSWER 147
In which of the following examples, chemical saturation provides better image quality than STIR? -
ANSWER A 16 cm isocenter FOV
During out phase image acquisition, the dark signal intensity projected by the voxels where fat and water
converge is the result of: - ANSWER Chemical miss-registration
What would be the best technique to obtain fat saturation in a patient that has a metallic implanted
device in the FOV area? - ANSWER STIR
IR pulse sequences are characterized by starting the pulse sequence with _____ RF pulse. - ANSWER
180°
Chemical saturation can be used to saturate signal from:
A. Fat
B. Water
C. Silicone
D. All answers are correct - ANSWER All answers are correct
The main concern with EPI pulse sequences is:
1. Peripheral nerve stimulation
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
