（5）撮像法の種類と特徴 - AIST
O . T1,T2,T2*). T1,T2,T2*). T1). D). 1. . . 1H PD . . 13C T1 . . 19F FID T2 . = 23Na echo T2* . . . 31P D MRS . . . echo T1 T2 FT . FID T FT . echo D FT . FID T (T2) FT . FID T2 FT . P FID PD . 2. o . 3. . TE . TE=0 . . . TE = 8msec TE 4. T1,T2,T2*). 5. IR T1 . . . RF. G . . G . Gr . . TI TE/2 TE/2 . TI: TE. TE: TR. TR: 6. T1 . 100. B T1=1000msec, =100 . A T1=300msec, =50 . 50. . 0. 0 500 1000 1500 2000 70 2500. 60. -50. . 50. 40. -100 30 A B. 20. 10. 0. 0 500 1000 1500 2000 2500 3000. A B TI. FLAIR fluid attenuated inversion recovery . null point . STIR Short TI Inversion Recovery . T 7. SE T . 180 . 90 180 . RF. Gs . Gp . . Gr . Signal . (TE/2) (TE/2). TE: . TR: . . . 8. T2 Weighted MRI of a Rat Head TR = 2748msec (Spin Echo). TE = 8msec TE = 34msec TE = 59msec TE = 84msec T2.
速度エンコーディング（VENC :Velocity Encoding） 21 血流イメージングのためのパルスシーケンス(PC法) Signal Slice Selection RF Gs Gr Phase Encoding ... Signal Acquisition 位相コントラスト法 velocity encoding 流速エンコーディング. 22 Flow Imaging
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