Transcription of 1.5T MRI 装置における 3D TSE ... - nagano-mri.com
1 MRI . 3D TSE variable flip angle sequence T2 .. 3D TSE variable flip angle sequence SPACE . flip angle . SAR MRI . 3D . MRI T2 .. SPACE . flip angle T2 T2var mode . apparent echo time CSF. white grey .. MAGNETOM Avant SIEMENS .. 1 . 1 SNR. 2 . 3 blurring . 2 2D-TSE . 3 .. 90-401 . T2 . 1 2 1 46 msec . 2 56 msec . 3 83 msec . 3 4 5 4 91 msec . 5 104 msec .. 1 1 .. SNR . 3D-TSE turbo factor 19 SPACE. 100 100. 46 46. 90 56 90 56. 83 83. 80 80. 91 91. 104 104. 70 70. 60 60. SNR. SNR. 50 50. 40 40. 30 30. 20 20. 10 10. 0 0. 60 80 100 120 60 80 100 120. TE (msec) apparent echo time (msec).
2 SNR . apparent echo time SNR. 92 . 91 . 89 . 87 . 85 . 84 . 82 . 80 . apparent echo time . 1 2 .. 3D-TSE turbo factor 19 SPACE. 1 1. 56. 83 91. 104. 56. 83. 91.. 104.. 0 0. 60 80 100 120 60 80 100 120. TE(msec) apparent echo time(msec). C=Sa-Sb/ Sa+Sb /2 Sb:T2 46msec .. 2D-TSE SPACE. 6mm / 2mm .. 1 4 .. blurring . 2D-TSE 3D-TSE SPACE. turbo factor 13 turbo factor 89 turbo factor 89. / . / / / FOV 30cm matrix size 512 512 . 2 2D-TSE .. 2D-TSE SPACE. 4'35 9'05 . 31 31 1 104 . 104 . / 6mm / 2mm / . TE. TE 81 . 81 turbo turbo factor 11 . 11 84 turbo factor 73.
3 Apparent echo time 84 73 . band width 260. echo space band width 449. echo space . 3 .. HCC . 2D-TSE 6mm / SPACE 2mm . 3 .. SPACE SPACE MPR . SPIO . 3 .. SPACE . 1. 3D-TSE . T2 . SNR T2 T2 . apparent echo time . T2 T2 .. blurring . 2. 2D-TSE .. SPIO .. 10 .. iPAT . T2 .. T2var mode.
