Spin-echo

A spin-echo is a technique used in MRI scans to improve image clarity by reducing noise and distortions. It involves applying a strong magnetic pulse that flips the orientation of hydrogen nuclei in the body, then a second pulse that causes these nuclei to realign and emit signals coherently. This process helps cancel out interference from surrounding tissues and imperfections, resulting in a clearer, more detailed image of internal structures. Essentially, spin-echo sequences enhance MRI accuracy by controlling how the magnetic signals are collected and interpreted.