Exam (elaborations)
MDCB BOARD REVIEW QUESTIONS & ANSWERS RATED 100% CORRECT!!
- Course
- Institution
MDCB BOARD REVIEW QUESTIONS & ANSWERS RATED 100% CORRECT!!
[Show more]
Content preview
MDCB BOARD REVIEWQUESTIONS &
ANSWERS RATED
100% CORRECT!!
MDCB
Evatee 9/5/24 MDCB
,MDCB BOARD REVIEW QUESTIONS &
ANSWERS RATED 100% CORRECT!!
In terms of a computer, what do the following acronyms stand for:
CRT
LED
LCD
ROM
RAM Answer - CRT: cathode ray tube
LED: liquid emitting diode
LCD: liquid crystal display
ROM: read only memory (permanent, can't write over)
RAM: random access memory (temporary, lost when computer turns off)
What is used for MRI magnet shielding? What is used for MRI radiofrequency
shielding? Answer - -steel plates
-metal mesh (Faraday cage)
What strength of MRI has been shown to have no biological effects? Answer -
If <10Tesla, then no biological effects
What is the cause for acoustic noise with an MRI machine? Answer - The
switching of gradient fields
,What is the event of a rapid boil-off of the liquid nitrogen or liquid helium
surrounding the MRI magnet, which is a failure of the emergency venting
system and can cause a life-threatening oxygen shortage in the MRI room?
Answer - Quench
What is the resolution of MRI? Spatial accuracy? Answer - -Resolution:
0.3lp/mm
-Spatial accuracy: 1mm-2mm
How can the resolution of an MRI be bettered? Answer - Use stronger
gradients
What are some disadvantages of MRI? Answer - -Image distortion due to lack
of homogeneity of magnetic fields and due to the gradients having slight spatial
non-linearities
-No electron density info
-Long scan times (motion artifacts)
-Spatial resolution not as good as CT
What 9 structures are evaluated on an MRI? Answer - -CSF
-Gray matter
-White matter
-Fat
-Cortical bone
-Air
-Blood
-Oedema
-Protein
, On a T1 MRI image, how does the following anatomy look:
-CSF
-Gray matter
-White matter
-Fat
-Cortical bone
-Air
-Blood
-Oedema
-Protein Answer - -CSF: dark
-Gray matter: gray
-White matter: bright
-Fat: bright
-Cortical bone: dark
-Air: dark
-Blood: dark
-Oedema: grey/dark
-Protein: bright
On a T2 MRI image, how does the following anatomy look:
-CSF
-Gray matter
-White matter
-Fat
-Cortical bone
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 EvaTee. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $37.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76667 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now