Tuning Effective Relaxation Time in CPMG Sequence by Varying the Rotation Angle of the Refocusing Pulses

被引：0
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作者：
Iskander Khairutdinov
Michael Volkov
Ruslan Zaripov
Marcel Bakirov
机构：
[1] Zavoisky Physical-Technical Institute,
[2] FRC Kazan Scientific Center of RAS,undefined
来源：
Applied Magnetic Resonance | 2023年 / 54卷
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摘要：
The Carr–Purcell–Meiboom–Gill (CPMG) pulse sequence is actively used in magnetic resonance to measure the relaxation time T2. The refocusing pulses in this sequence are 180° by default. In this study, numerical calculations of the echo amplitudes were carried out. If T1 > T2, then applying refocusing pulses with rotation angle 90° or less increases the effective relaxation time. It becomes longer than T2 and tends to T1. To demonstrate this effect, NMR and EPR experiments were performed using the CPMG pulse sequence.
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页码：463 / 475
页数：12
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