Local magnetic field Study guides, Class notes & Summaries

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 heating is due to - magnetic induction Types of RF coil designs --linearly polarized -circularly polarized (quadrature) Function of coils - -transmit only -receive only -transmit/receive Most common type of coil used - r...

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 heating is due to - magnetic induction Types of RF coil designs --linearly polarized -circularly polarized (quadrature) Function of coils - -transmit only -receive only -transmit/receive Most common type of coil used - r...

MRSO Exam Questions and Answers Latest Updated 2024 (GRADED A+) MR Safety Officer responsibilities - Answer The role of MRSO is often carried out by the senior Radiographer (in the USA this will generally be an MR technologist), but other suitably trained individuals could also fill this role. Multiple MRSOs could be appointed, provided only one is in charge at a given time. His/her responsibilities include the following: To be readily accessible and available (eg, to the operators of the ...

PPL Navigation Exam 224 Questions with Verified Answers An observer is located north of the plane of the ecliptic The Earth moves on an elliptical orbit around the sun and the rotational direction is counterclockwise The Earth moves on a circular orbit around the sun and the rotational direction is counterclockwise The Earth moves on an elliptical orbit around the sun and the rotational direction is clockwise The Earth moves on a circular orbit around the sun and the rotational direc...

What is the purpose of the OSI physical layer? - Answer-transmitting bits across the local media* Why are two strands of fiber used for a single fiber optic connection? - Answer-They allow for fullduplex connectivity.* Which characteristic describes crosstalk? - Answer-the distortion of the transmitted messages from signals carried in adjacent wires* Which procedure is used to reduce the effect of crosstalk in copper cables? - Answer-twisting opposing circuit wire pairs together* Match the...

When the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check? CRC in the trailer What is the purpose of the OSI physical layer? transmitting bits across the local media Why are two strands of fiber used for a single fiber optic connection? They allow for full-duplex connectivity. Which characteristic describes crosstalk? the distortion of the transmitted messages from signals carried in adjacent wires Which procedure ...

The evaporator in a refrigeration system: - Answer-Is the component where refrigerant boils and absorbs heat. The purpose of the compressor is to change ___________. - Answer-Low-pressure, low-temperature vapor to a high-pressure, high temperature vapor A common refrigerant leak detection device is the: - Answer-Halide torch. Copper-plating of compressor parts is: - Answer-Caused by contaminants in the system. If not properly installed, a hot-gas muffler might trap: - Answer-Oil. Unit ven...

MR Safety Officer responsibilities - The role of MRSO is often carried out by the senior Radiographer (in the USA this will generally be an MR technologist), but other suitably trained individuals could also fill this role. Multiple MRSOs could be appointed, provided only one is in charge at a given time. His/her responsibilities include the following: To be readily accessible and available (eg, to the operators of the MR system) at all times that the MR facility is accessible. Ensuri...

MRSO - RADIO FREQUENCY - MODULE 4 Test Review |Question and Answers| 100% Correct Purpose of RF (B1) field *Ans* excite hydrogen protons RF energy is absorbed by tissues *Ans* within the volume of the RF transmit coil. This is a thermogenic process. Thermogenic process *Ans* Results in production of heat. Ex: RF energy absorption MRI local and whole-body tissue heating is due to *Ans* magnetic induction Types of RF coil designs *Ans* -linearly polarized -circularly polarized (quadratu...

HVAC S.T.A.R EXAM QUESTIONS AND ANSWERS 100% PASS The evaporator in a refrigeration system: - Correct Answer ️️ -Is the component where refrigerant boils and absorbs heat. The purpose of the compressor is to change ___________. - Correct Answer ️️ -Low- pressure, low-temperature vapor to a high-pressure, high temperature vapor A common refrigerant leak detection device is the: - Correct Answer ️️ -Halide torch. Copper-plating of compressor parts is: - Correct Answer ️️ -Ca...