MRI Physics
Image Acquisition
Modality
Image Analysis
100
The precession frequency of protons proportional to external magnetic field
What is larmor frequency?
100
MR signal which is detectable during relaxation
What is free induction decay (FID)?
100
Anatomical Parcellation
What is T1 contrast?
100
This transformation involves rotations and translations
What is Rigid body registration?
200
This component transmits and /or receives signal at the resonance frequency
What is RF coil?
200
Schematic representation of MRI
What is MRI pulse sequence?
200
It sensitizes to oxygenated blood
What is fMRI?
200
Process of extracting different brain tissues
What is brain Segmentation?
300
Net magnetization starts to recover back to the initial state (relaxation) after RF pulse stops
What is relaxation?
300
This sequence does not compensate for field inhomogenity
What is gradient echo?
300
Random motion of water molecules inside neurite
What is brownian motion?
300
Linear transformation with 12 DOF
What is Affine tranformation?
400
Spin-lattice and spin-spin relaxation
What is T1 and T2 relaxation?
400
The echo formulated by pre-phasing gradient and frequency-encoding gradient
What is gradient echo?
400
Measures tissue perfusion using a freely diffusible intrinsic tracer
What is Arterial Spin Labeling (ASL)?
400
Approach that measures differences in local concentration of brain tissue through voxel wise comparison.
What is voxel based morphometry?
500
Felix Bloch
Who developed nuclear magnetic resonance?
500
'Artifact'
What is Gibbs ringing?
500
It is a conventional spin echo sequence preceded by inverting pulse
What is Inversion Recovery?
500
Normalization of intensity within brain tissue
What is Bias correction?