FFT of an Image

5 次查看（过去 30 天）
David Dijemeni
David Dijemeni 2012-1-7
Is it possible to perform the FFT on an MRI image to show the dominant frequency at parts of the image?

请先登录，再回答此问题。

采纳的回答

Wayne King
Wayne King 2012-1-7
An MRI image is already an image of 2-D Fourier magnitudes of the underlying K-space data.
  2 个评论
David Dijemeni
David Dijemeni 2012-1-7
Thanks for this info. I didnt actually know that. Please can u explain a bit more Wayne?
Wayne King
Wayne King 2012-1-7
Hi Esuabom, You can read a bit about it here:
http://en.wikipedia.org/wiki/Physics_of_magnetic_resonance_imaging#k-space
Look for k-space. The typical clinical image that you think of in MRI is a magnitude image, there are some uses for phase images in MRI, which you can research.

请先登录，再进行评论。

更多回答（1 个）

Image Analyst
Image Analyst 2012-1-7
Why not just use FFT2 like usual? Go here for some demos by Steve:
http://blogs.mathworks.com/steve/category/fourier-transforms/

类别

在 Help Center 和 File Exchange 中查找有关 MRI 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by