Two‐dimensional spatially selective spin inversion and spin‐echo refocusing with a single nuclear magnetic resonance pulse

摘要: A new class of nuclear magnetic resonance (NMR) pulses that provides simultaneous spatially selective inversion spins in two dimensions following a single pulse application is described and demonstrated. The two‐dimensional consist square‐ or amplitude‐modulated π rf applied the presence an field gradient reorients through during pulse. For example, square Gaussian produce sharply peaked sombrero‐, egg‐carton‐, stalagmite‐shaped profiles spin xz plane when rotates describes figure eight plane. theoretical profiles, computed by numerical integration Bloch equation, are good agreement with experimental results obtained incorporating into conventional NMR imaging sequence. directly applicable to restricted field‐of‐view high‐resolution for ameliora...