MRI K-space to image why track frequencies in two dimensions?

1. When only half the lines of k-space are filled in the frequency axis which imaging technique is being used?
2. What is k-space sequence in MRI?
3. What is k-space and how does it can it affect image contrast?
4. How does the central part region of k-space contribute to an image?

When only half the lines of k-space are filled in the frequency axis which imaging technique is being used?

Partial or fractional echo is when only half the views of k-space are filled in the frequency axis, an acceleration technique used to shorten TR and TE. Which of the following implants would be considered acceptable for an MRI scan at 1.5Tesla?

What is k-space sequence in MRI?

The k-space is an extension of the concept of Fourier space well known in MR imaging. The k-space represents the spatial frequency information in two or three dimensions of an object. The k-space is defined by the space covered by the phase and frequency encoding data.

What is k-space and how does it can it affect image contrast?

[right half black circle] k-space is the Fourier transform of the image: the center of k-space holds low-spatial-frequency information (image contrast), whereas the periphery of k-space holds high-spatial-frequency information (image details).

How does the central part region of k-space contribute to an image?

As an overview, the center of k-space contains low spatial frequency information, determining overall image contrast, brightness, and general shapes. The periphery of k-space contains high spatial frequency information (edges, details, sharp transitions).