MRI PHYSICS FINAL Exam 2024/2025(Questions With 100% Correct Answers)A+ Graded Verified
9 views 0 purchase
Course
MRI PHYSICS
Institution
MRI PHYSICS
Nuclei that have the strongest magnetic moments are those with - ANSWER only hydrogen
The Larmor frequency of nuclei depends on: - ANSWER # of protons and neutrons in the nucleus
gyromagnetic ratio
main magnetic field strength
molecule in which nuclei are located
The spin-lattice...
MRI PHYSICS FINAL Exam 2024/2025(Questions With
100% Correct Answers)A+ Graded Verified
Nuclei that have the strongest magnetic moments are those with - ANSWER only
hydrogen
The Larmor frequency of nuclei depends on: - ANSWER # of protons and neutrons in
the nucleus
gyromagnetic ratio
main magnetic field strength
molecule in which nuclei are located
The spin-lattice relaxation time in MRI is also called the - ANSWER longitudinal
relaxation time
The shortest relaxation time in MRI is the - ANSWER t2*
The coil that provides the best signal to noise ratio is the - ANSWER surface coil
The relaxation time that controls the FID is the - ANSWER t2*
Cryogenic superconductive magnets have their electrical windings cooled by -
ANSWER liquid helium
The Larmor frequency of hydrogen nuclei at 1.5T is about - ANSWER 63.9 MHz
The brightest signal from a T2- weighted spin echo MRI image would be from -
ANSWER pure water (3000 ms)
The brightest signal from a T1- weighted spin echo MRI image would be from -
ANSWER adipose tissue (180 ms)
A T1 weighted spin echo image is produced by using a pulse sequence with ________ TE
time and a ______ TR time. - ANSWER short, short
A T2 weighted spin echo image is produced by using a pulse sequence with ______ TE
time and a _______ TR time. - ANSWER long, long
A proton density weighted spin echo image is produced by using a pulse sequence with
______ TE time and a _______ TR time. - ANSWER short, long
The pulse sequence most often used to nullify the signal from adipose tissue is -
ANSWER STIR
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 STARSHINESTUVIA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
