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mri physics unit 1
| Question | Answer |
|---|---|
| if a pt has staples in their head and you are scanning their knee what do you do | depends on situation, use heat sync |
| main magnetic filed | static |
| what are the fdas limit on this field (static) | 8 |
| what is a quench | |
| what are the affects of the quench on a patient | frostibite, headaches |
| what are the fdas hearing | 102 decibals |
| fda limit on tingly feelings | as long as patient can tolerate it |
| magnetohydrodynamic effect | static |
| boiling off of liquid helium | quench |
| is metal safe to scan | no |
| what do you do if a heart valve patient comes in | ask for an implant card, or look up medical records to see if it is safe |
| MR burn hazard in this field | gradient |
| when should a patient be screened | everytime |
| what is the guass line that the general public is restricted to | 9 |
| filed strenght of 3 tesla is equal to how many guass | 30000 |
| how to prevent burns | make sure things are not in loops, pt body no on side of bore of magnet |
| insulating pads | .25 mm or 1 cm |
| MRMD | |
| level one personnel | |
| level two personnel | |
| non mr personnel | general public |
| informed consent | different types of communication |
| who is able to do written consent | family member, guardian, patient, of legal age and conscious |
| medical aspepsis | cleaning equipment, standard precautions |
| surgical asepsis | |
| transmission of infections |