Table 1.

Summary of the treatment of the relative rf amplitude and phase for the four cases C1–C4.

	C1	C2	C3	C4
Amplitude	${\stackrel{\mathrm{‾}}{\mathit{\omega }}}_{\mathrm{1},\mathrm{rel}}\left(\mathit{r}\right)$	${\mathit{\omega }}_{\mathrm{1},\mathrm{rel}}(\mathit{r},t)$	${\stackrel{\mathrm{‾}}{\mathit{\omega }}}_{\mathrm{1},\mathrm{rel}}\left(\mathit{r}\right)$	${\mathit{\omega }}_{\mathrm{1},\mathrm{rel}}(\mathit{r},t)$
Phase	$\mathrm{0}$	$\mathrm{0}$	${\mathit{\varphi }}_{\mathrm{rel}}(\mathit{r},t)$	${\mathit{\varphi }}_{\mathrm{rel}}(\mathit{r},t)$