SE序列中，下面哪种条件可以获得T1加权图像？Which of the following parameters in the SE sequence can lead to a T1-weighted image?
A、长TE,长TRlong TE and long TR
B、长TE,短TRlong TE and short TR
C、短TE,短TRshort TE and short TR
D、短TE,长TRshort TE and long TR