the original work
Development of the Dual Flip-Flop Angle Type T2W-Fast Spin Echo Method
2020 年 6 巻 p. 71-78
詳細
2020 年 6 巻 p. 71-78
Fast Spin echo is a major sequence used for T2WI. The 90 (Flip) angle - 180 (Flop) angle - echo - 180 (Flop) angle - echo train sequence is the basic pattern in FSE. Major drawbacks of the technique are the increase in SAR and decrease in CNR. To overcome these problems a Flip-Flop angle type sequence, a T2WFSE was developed. Optimal Flip and Flop angles must be selected to develop the Flip-Flop type sequence of T2WFSE. The Bloch equation was applied in order to develop the sequence used for the evaluation of MR signal strength in numerical simulation. Optimal Flip and Flop angles were selected by numerical simulation based on the Bloch equation for the Flip-Flop angle type T2WFSE.
