Single-shot-double-echo EPI.
Echo planar imaging (EPI) was extended for the acquisition of both, the spin-echo (SE) and the stimulated echo in a stimulated echo sequence after one excitation from thermal equilibrium. The two independent EPI images reflect different states of the transverse magnetization excited and measured almost simultaneously. This single-shot-double-echo EPI approach offers a variety of useful applications such as varying image contrast, obtaining flow or diffusion information, improving image resolution or circumventing T*2 requirements in single shot EPI. Benefits and limits of this technique are discussed.
Börnert
P
P
Philips GmbH Forschungslaboratorien, Abteilung Technische Systeme, Hamburg, Germany.
Jensen
D
D
D016477:Artifacts; D001921:Brain / Q000033:anatomy & histology; D003199:Computer Systems; D004058:Diffusion; D017352:Echo-Planar Imaging / Q000295:instrumentation / Q000379:methods*; D005583:Fourier Analysis; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods*; D007091:Image Processing, Computer-Assisted; D008280:Magnetics; D012212:Rheology; D013997:Time Factors