Tailored RF

TailoredRF is used to stabilize the echo amplitudes in the FSE sequences (Spin Echo and Inversion Recovery). Tailored RF produces images with the following characteristics: less blurring, slightly less SNR, flatter contrast for T2s, and slightly more slices per TR.

Table 1. Image legend

Number	Description
1	Tailored RF On
2	Tailored RF Off

By varying the flip angle of the first two refocusing pulses and keeping the remaining refocusing pulses the same, the echo amplitudes can be made fairly constant. The result is a reduction of blurring in the image.

Table 2. Image legend

Number	Description
1	90°
2	174°
3	158°
4	160°

Use the Tailored RF Imaging Option with FSE scans using short TEs, T1-weighted and/or PD-weighted imaging and for off center FOVs (e.g., shoulders).

• Always select Tailored RF if the Blurring Cancellation is on.
• You can also use Tailored RF with a larger bandwidth (20 to 41 kHz) to increase the slices per acquisition at the expense of flattened T2 image contrast.
• Because the flip angles are less than 180°, the contrast for an FSE scan acquired with Tailored RF pulses may be slightly different than an FSE scan acquired without Tailored RF.
• For details about Tailored RF with SSFSE, see SSFSE considerations.