1、中樞神經系統高分辨率掃描Propeller T2512X5121.5 T3.0 TFigure 9a: (a, b) FLAIR images in a 22-year-old female patient with clinically isolated syndrome 3.0 T TR/TE/IR: 12 000/140/2850; turbo factor, 38; NEX 1; acquisition time, 4 minutes 1.5 T 6000/110/2000; turbo factor, 29; NEX 2; acquisition time, 3 minutesFig

2、ure 10b: MR images in 32-year-old female patient with medically refractory complex partial seizures左側海馬信號強度增加，提示硬化左側海馬信號強度增加，提示硬化體積變化不明顯，提示尚無萎縮體積變化不明顯，提示尚無萎縮右側海馬所見的間隔樣紋理結構喪失右側海馬所見的間隔樣紋理結構喪失右側海馬亞解剖結構右側海馬亞解剖結構可見黑線樣的白質卷入海馬內可見黑線樣的白質卷入海馬內可能是海馬白質（海馬槽）可能是海馬白質（海馬槽）海馬結構放大圖海馬結構放大圖MR images in a 19-year-old ma

3、le patient with multiple sclerosisFSE T2WI With SENSE flip angle sweep 60 采集時間采集時間 8 sa 70-year-old woman with a temporal high-grade glioma， the leptomeningeal spread of the tumor (arrowhead) 1.5 T with 0.10 mmol/kg 3.0 T with 0.05 mmol/kg 3.0 T with 0.10 mmol/kg Contrast-enhanced T1-weighted MR ima

4、ges in 46-year-old male patient with right parietal high-grade gliomaSE T1WI CE 1.5TSE T1WI CE 3.0TContrast-enhanced T1-weighted MR images in 46-year-old male patient with right parietal high-grade glioma IR FSE T1WI CE 3.0T SE T1WI CE 3.0TTOF (inflow) MRA at (a) 1.5 T and (b) 3.0 T in the same indi

5、vidual1.5 T3.0 T28/6.9; 50 sections; time, 2 minutes 34 seconds; section thickness, 2 mm; field of view, 160 x 160 ; matrix, 336 x 212; voxel size, 0.92 mm326/3.5; 100 sectionstime, 7 minutes 57 secondssection thickness, 1 mmfield of view, 250 x 250 mm2matrix, 832 x 571voxel size, 0.13 mm3TOF MR ang

6、iograms at (a) 1.5 T and (b) 3.0 T in a patient with high-grade stenosis of the right internal carotid artery1.5 T3.0 T掃描參數分別同上一圖像掃描參數分別同上一圖像MIPs from 3D TOF MR angiography in a 58-year-old woman show moyamoya vessels (arrows) from ICAs Transverse MIP 3.0-T 1.5-T lateral MIP of the right side 3.0-T

7、1.5-T show moyamoya vessels (arrows) from ICAslateral MIP of the left side 3.0-T 1.5-T show moyamoya vessels (arrows) from ICAs61-year-old male patient with dysarthria 3T 3D TOF-MRA a segmental high-grade stenosisat the cavernous segment of the distal ICA DSA lateral view almost identical features o

8、f stenosis at the corresponding location A 70-year-old female patient with involuntary movement of the left side. 3T 3D TOF-MRA flow void in the proximal portion of the right middle cerebral artery DSA anteroposterior view a focal high-degree stenosis at the corresponding location A 69-year-old male

9、 patient with dizziness 3T 3D TOF-MRAa focal high-grade stenosis at the proximal portion of the basilar trunk. DSA oblique view a focal high-grade stenosis at the corresponding location four-dimensional time-resolved angiography using keyhole (4D-TRAK)DSA findingsearly arterialearly venous phasea pa

10、tient with large frontal arteriovenous malformationfour-dimensional time-resolved angiography using keyhole (4D-TRAK)DSA findingsearly arterialearly venous phasea patient with large frontal arteriovenous malformationIIIIIIIV77-year-old man on the 2nd day after the onset T2-weighted FLAIR T1-weighted

11、 1.5 T (A, C, and E) 3.0 T (B, D, and F) 56-year-old woman on the 6th day after the onset T2-weighted FLAIR T1-weighted 1.5 T (A, C, and E) 3.0 T (B, D, and F) Figure 3: Transverse T2-weighted turbo SE (a) 1.5-T (repetition time msec/echo time msec, 2500/100) and (b) 3.0-T (3000/80) MR images in a 5

12、2-year-old male patient with pontine cavernoma FSE T2WI 1.5T橋腦海綿狀血管瘤橋腦海綿狀血管瘤 FSE T2WI 3.0T 橋腦海綿狀血管瘤橋腦海綿狀血管瘤含鐵的小腦齒狀核顯示更清楚含鐵的小腦齒狀核顯示更清楚Figure 4: Functional brain MR images in the same individuals1.5-T (3000/50, 90 flip angle)3.0-T (3000/35, 90 flip angle)BOLD腦功能成像腦功能成像fMRI軀體運動，感覺，視覺，語言，針灸鎮痛軀體運動，感覺，視覺，

13、語言，針灸鎮痛46-year-old female patient with clinical evidence of subacute infarction (72 hours after onset)4345/82; matrix ：128128 section thickness：5-mmb values of 0, 600, and 1000 sec/mm23.0 T1.5 T10分鐘之內分鐘之內1.5 T3.0 T3.0 T反映組織的微血管分布情況及血流灌注的狀態DWI+PWI顯示半暗帶MR Perfusion Weighted Image66-year-old patient wi

14、th right-sided frontodorsal grade IV gliomaarterial spin labeling at 3.0 T4000/3717 sections5-mm thickness64 x 64 matrix700-msec labeling delay50 dynamic acquisitions6-minute acquisition time MR Spectroscopy(MRS)MR Spectroscopy(MRS)in-phase gradient-echo images1.5 T3.0 TChemical shift artifact of th

15、e first kindDielectric effects of (a) single-shot and (b) multishot TSE sequences單次FSE序列使用長回波鏈、大量再聚焦RF脈沖駐波效應所致偽影明顯多次激發FSE序列駐波效應所致偽影減輕Figure 5: Effect of SAR-related difficulties at 3.0 T without parallel imaging 1.5 TTR/TE 2780/100NEX 4采集時間采集時間 3：20 3.0TTR/TE 4000/80NEX 2采集時間采集時間 2：40FSE T2WI FOV 250-mm矩陣矩陣258512因為因為SAR的限制的限制采集