MRSO - RADIO FREQUENCY - MODULE 4 Questions & 100% Correct Answers
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Course
MRSO
Institution
MRSO
Purpose of RF (B1) field
~~> excite hydrogen protons
RF energy is absorbed by tissues
~~> within the volume of the RF transmit coil. This is a thermogenic
process.
Thermogenic process
~~> Results in production of heat. Ex: RF energy absorption
MRI local and whole-body tissue hea...
-100% power is at isocenter (distance from isocenter should be identical on
each side)
-measured in cm
-used for vendor integrated transmit coil only, not transmit/receive head or
knee coil
Purpose of RF Power Distribution Map
✓ ~~> determine percentage of RF frequency power at a given location
within the volume of the radiofrequency transmit coil
-if metal item can not be removed, this map would be useful.
The further from isocenter, the _______ the RF power exposure
✓ ~~> less
Master01 | September, 2024/2025 | Latest update
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