The readout MR signal is a mix of RF waves with different amplitudes, frequencies and phases, containing spatial information. This signal is digitized and raw data are written into a data matrix called K-space. K-space data are equivalent to a Fourier plane. To go from a k-space data to an image requires using a 2D inverse Fourier Transform.
This chapter introduces the most complex concepts of MRI image formation for many students, so take to your time to follow this step.
Understanding k-space and Fourier transform will help you understand the trade offs that are made for fast imaging and sequences optimisation, as well as the source of various artifacts.
The first fully digital C-arm
Increasing interventional radiology capacity while reducing patient radiation
A healthy dose of radiation monitoring
Patient-Specific Radiation Dose Estimation in Breast Cancer Screening
Ensuring performance of x-Ray equipment: a holistic approach