K-space

K-space is a concept used primarily in medical imaging, particularly in MRI (Magnetic Resonance Imaging). It is a mathematical representation of how images are created from the raw data collected during the scanning process. Instead of capturing an image directly, the scanner collects signals that correspond to different frequencies and spatial locations. K-space is essentially a grid where these signals are stored. Once the data is fully collected, complex algorithms transform the information in K-space into the final image we see. Understanding K-space helps improve image quality and efficiency in the imaging process.