| Zugriffsnummer | 10205 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Design of a constant adiabaticity pulse for selective population inversion |
| Autor(in); Institution |
Mitschang, Lorenz; 8.1, Medizinische Messtechnik, PTB-Berlin
Ittermann, Bernd; 8.1, Medizinische Messtechnik, PTB-Berlin
Schubert, Florian; 8.1, Medizinische Messtechnik, PTB-Berlin
Rinneberg, Herbert; 8, Medizinphysik und metrologische Informationstechnik, PTB-Berlin
|
| Quelle/Jahr | Journal of Magnetic Resonance: 168 (2004), 1, 103 - 109 |
| ISSN | 1090-7807 |
| DOI | |
| Verlag | Amsterdam: Elsevier |
| Freie Schlagworte | RF pulse design ; Adiabatic pulse ; Selective inversion ; RF peak amplitude |
| Zusammenfassung | A new adiabatic pulse for selective population inversion and the principles of its design are presented. The pulse shape is characterized by the combination of two constraints. (i) Adiabatic following of the central isochromat of the spectral region of interest occurs with constant, possibly small adiabaticity parameter; thereby, the center isochromat gets most efficiently inverted. (ii) Frequency and amplitude modulations obey the principle of offset independent adiabaticity; thus, the inversion dynamics of the center isochromat is extended over the desired bandwidth. Superiority of the new pulse over the well-known sech/tanh adiabatic pulse is demonstrated. |
