AMRI310 WK2 - larmor equation,
vectors, resonance
When the RF pulse is removed, the spins interact with each other and some
speed up while others slow down. This is known as _________.
dephasing
Nuclei of opposite energy will ___________ each other's magnetic moments.
cancel out
There are always a few extra low energy nuclei that will not be canceled out.
These are known as the patient's ______________.
NMV
A MR active magnetic moment will have a _________ that is odd.
mass number
In MRI we use two units to measure field strength. One unit is Tesla. What is
the other unit?
gauss
, This is the time between the excitation pulse of a sequence and the resulting
echo used in the MR signal.
TE
This is the number of times that a periodic function or vibration repeats itself in
a specified time. It is usually measured in hertz (Hz), where 1 Hz = 1 cycle per
second.
frequency
T2 relaxation time is when
63% of the transverse magnetization has decayed
______ occurs after initial RF application, causing phase differences to
appear between precessing spins, resulting in decay of transverse
magnetization.
dephasing
We have an expert-written solution to this problem!
The _________ is defined as the resonant frequency, and is equal to the
product of the magnetic field and the gyromagnetic ratio.
precessional frequency
vectors, resonance
When the RF pulse is removed, the spins interact with each other and some
speed up while others slow down. This is known as _________.
dephasing
Nuclei of opposite energy will ___________ each other's magnetic moments.
cancel out
There are always a few extra low energy nuclei that will not be canceled out.
These are known as the patient's ______________.
NMV
A MR active magnetic moment will have a _________ that is odd.
mass number
In MRI we use two units to measure field strength. One unit is Tesla. What is
the other unit?
gauss
, This is the time between the excitation pulse of a sequence and the resulting
echo used in the MR signal.
TE
This is the number of times that a periodic function or vibration repeats itself in
a specified time. It is usually measured in hertz (Hz), where 1 Hz = 1 cycle per
second.
frequency
T2 relaxation time is when
63% of the transverse magnetization has decayed
______ occurs after initial RF application, causing phase differences to
appear between precessing spins, resulting in decay of transverse
magnetization.
dephasing
We have an expert-written solution to this problem!
The _________ is defined as the resonant frequency, and is equal to the
product of the magnetic field and the gyromagnetic ratio.
precessional frequency
