Exam (elaborations)
MRSO PRACTICE EXAM QUESTIONS AND ANSWERS
- Course
- Institution
MRSO PRACTICE EXAM QUESTIONS AND ANSWERS ...
[Show more]
2 reviews
By: jeanniegrotheer • 3 months ago
By: tietjens • 8 months ago
could be organized better, all information runs together! Makes it hard to differentiate
Content preview
MRSO PRACTICE EXAM QUESTIONS AND ANSWERS physical effects of STATIC FIELDS - Answer translation rotation lenz physical effects of TIME-VARYING FIELDS - Answer motion noise induced currents (on object/in person) lenz translation rotation everything NOT MR SAFE needs to be behind... - Answer 5 gauss line earth's magnetic fiels - Answer 0.5 gauss 1.5T = ___ gauss - Answer 15,000 3 T = ___ gauss - Answer 30,000 MR device can be considered non-significant risk IF: (list) - Answer static mag field SAR dB/dt sound pressure level ^ are below certain threshold dB/dt - Answer gradient fields rate of change can produce severe discomfort/nerve stimulation limits for# Tesla adults can take - Answer 8T limits for # Tesla a >1month old can take - Answer 4T max unprotected sound level - Answer 140 dB max PROTECTED sound level - Answer 99 dBA biological effects of strong mag fields - Answer vertigo dizziness nausea magnetohydrodynamic effects induced electric currents... (for time-varying....) magnetophosphenes nerve stimulation/tingling hair static (electric charges on skin) are there known fetal effects of strong magnetic fields? - Answer nope magnetohydrodynamic effect - Answer bloodflow changes because blood is flowing inside a strong magnetic field; b/c of ions veering left or right occupational threshold for sound pressure level - Answer for 8hr shift: 90dB Engineering controls - Answer eliminate/reduce exposure to hazard through use of engineered structures/machinery/equipment badge access, 4-zone design, shielding around magnet Administrative controls - Answer eliminate/reduce hazard by modifying/implementing administrative practices visual signs, zone notices, ferrous-free sweeps, MRSO on each shift, floor markings PPE - Answer ex. hearing protection (headsets, earplugs) MAX TORQUE in a scanner is __ - Answer at scanner ISOCENTER MAX TRANSLATIONAL FORCE in a scanner is __ - Answer at scanner BORE ENTRANCE how to read static magnetic field map - Answer move further from bore --> magnetostatic lines are spaced further out higher static magnetic field --> can experience __(more/less)___ torque - Answer MOREThe 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 luzlinkuz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76669 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now