Howtosignalprocessing
The MR signal is a small electrical current induced in the receiver coil by the precession of the net magnetization (M) during resonance. This is a manifestation of Faraday's Law of Induction, wherein a changing magnetic field induces a voltage in a nearby conductor.
- What is the main source of MRI signal?
- What is high signal in MRI?
- What is imaging in signal?
- What is magnetic signals?
What is the main source of MRI signal?
The primary origin of the MR signal is from water and fat within the patient's tissue; specifically, it is from the hydrogen nuclei (consisting of a single proton) contained within free water and lipid molecules (Fig. 3.1).
What is high signal in MRI?
The MRI hyperintensity is the white spots that highlight the problematic regions in the brain. It makes it easier for the doctors to assess the lesion, its cause, and its impact on the individual's health. The MRI hyperintensity is a common imaging feature in T2 MRI imaging reports.
What is imaging in signal?
Digital image signals are typically represented as two-dimensional (2D) arrays of discrete signal samples. If we rearrange the signal samples into a one-dimensional (1D) vector, then every image becomes a single point in a high-dimensional image space, whose dimension equals the number of samples in the image signal.
What is magnetic signals?
An electromagnetic signal in the radiofrequency range produced by the precession of the transverse magnetisation of spins. Rotation of the magnetisation induces a voltage that is amplified and demodulated by the receiver; the signal may refer only to this induced voltage.
