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MRSO PRACTICE () EXAM

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MRSO PRACTICE () EXAM

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MRSO PRACTICE (2024-2025) EXAM


SAR normal more - <<<Answers>>>>whole body SAR ≤2
head SAR ≤3.2
no physiolog. stress expected


SAR first-lev controlled - <<<Answers>>>>whole body SAR
between 2 and 4
head SAR ≤ 3.2
some ppl who can't tolerate a thermal challenge might
experience physiolog. stress (eg obese, diabetic, etc)


Same for 1.5,3,7T


SAR second-lev controlled - <<<Answers>>>>SAR may
exceed 4 for body


B1+rms - <<<Answers>>>>mag field composed of frequency
wave ..??? unit is Tesla/microTesla....


3 nons for MR safe - <<<Answers>>>>non metallic
non conductive
non RF reactive

, MRSO PRACTICE (2024-2025) EXAM


MR conditional - <<<Answers>>>>poses no hazards under
*specific conditions*


*typical* scanning conditions - <<<Answers>>>>field strength
max SAR
max spatial magnetic field gradient
transmit coil
scan location
scan duration


*other* scanning conditions - <<<Answers>>>>no fractured
leads
no epicardial leads
no abandonwed leads
don't put patient's controller in MR scanner...
physical effects of STATIC FIELDS -
<<<Answers>>>>translation
rotation
lenz

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