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怨张
9 years ago
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1 ( ) Medical Imaging II 1of 103

2 Ultrasound Imaging 2of 103

3 雷率 20 KHz 3of 103

4 了? 4of 103

5 理離 5of 103

6 (probe, transducer) (piezoelectric) 類 6of 103

7 料 7of 103

8 理 To ultrasound transmitter/receiver Coaxial cable Transducer housing Acoustic absorber Electrodes Backing block Piezoelectric crystal Matching layer 理不了 8of 103

9 : Pulse echo mode : 0.1~500 MHz 9of 103

10 10 of 103

11 理離 11 of 103

12 ( 類 ) 度 ( ) 異量 12 of 103

13 Acoustic Impedance ( ) (m/sec) of 103

14 都 14 of 103

15 理離 15 of 103

16 16 of 103

17 Amplitude (A) mode Brightness (B) mode Motion (M) mode Color Doppler 流 17 of 103

18 A Mode 離度 = 18 of 103

19 A Mode Ultrasound 見了 19 of 103

20 B Mode 亮度見臨 20 of 103

21 B Mode Ultrasound 理 A mode 數亮度 21 of 103

22 B Mode Ultrasound 理 Linear or curvi-linear 22 of 103

23 B Mode Ultrasound 23 of 103

24 B Mode = 2 x 離 / 40 cm ~ 0.5 msec 留 ~ 1/16 sec real time imaging 24 of 103

25 Real Time Imaging Interactive ( ) 不不 25 of 103

26 M Mode + 亮度 = vs. 26 of 103

27 M Mode Ultrasound 27 of 103

28 Color Doppler Ultrasound 利勒流度率 ( ) 度率流 28 of 103

29 勒了? 29 of 103

30 Doppler Ultrasound 量流 30 of 103

31 劣廉 portable 療力 : 不度 bodytype dependent image quality 31 of 103

32 Magnetic Resonance 32 of 103

33 禮 MRI ( ) 說量不 33 of 103

34 : 理 Nuclear magnetic resonance : 量粒量 + = 量 ( 螺 ) + = ( ) 34 of 103

35 力力 35 of 103

36 不列列 36 of 103

37 了 Bloch & Purcell : (1952 Nobel prize) MRI : 37 of 103

38 MRI 亮 38 of 103

39 GE Signa 1.5 Tesla 39 of 103

40 不利 Ernst : Pulsed & FT-NMR (1992 Nobel prize) MRI : 40 of 103

41 (Surface Coils) 3, 5, 5 x11 lumbar 41 of 103

42 流 42 of 103

43 Free Induction Decay (FID) Spectrum ( 31 P) 立葉 Text 43 of 103

44 1-D -31 度 = 量 44 of 103

45 2-D 1 H COSY 例 45 of 103

46 例 Text 46 of 103

47 NMR 來理了 ( ) 47 of 103

48 度不 Lauterbur : (2003 Nobel prize) MRI : 度 48 of 103

49 度度 Z gradient coil 49 of 103

50 率 Bo 50 of 103

51 NMR 來利類 CT 理理了數 51 of 103

52 類什? 不? Damadian : 異 (relaxation) MRI : 52 of 103

53 異神 (glioma) T1- & T2-53 of 103

54 NMR 來利理了臨 54 of 103

55 便 view Transaxial coronal sagittal 度度切 55 of 103

56 MRI Axial Sagittal Coronal 56 of 103

57 利 ( 度 ) 切 Bo Bo 57 of 103

58 : (recumbent) 立 (weight bearing) 58 of 103

59 度 lumbar sacrum 59 of 103

60 MRI (brain) T1 T2 度 CT 不力 60 of 103

61 MRI PDWI T1WI T2WI 61 of 103

62 MRI (hemorrhage) T1 PD T2 T2* 62 of 103

63 不來! 63 of 103

64 類來了療 MRI 理了 64 of 103

65 良度度度 65 of 103

66 Alderman-Grant coil Birdcage RF coil 66 of 103

67 列 (phased-array coil) 67 of 103

68 列 (phased-array coil) Spine phased array 68 of 103

69 Spine Phased Array FOV 69 of 103

70 度 ( T2 ) SE (8 min) TSE (30 sec) 70 of 103

71 度 (EPI) RF t G z t G y t G x t 2-sec IR preparation + instant scan 71 of 103

72 (myelination) MRI 2D TrueFISP (1 sec scan) 72 of 103

73 in utero MRI Histology Immature cortex Intermediate zone Row of migrating neurons Germinal matrix 22 weeks gestation 73 of 103

74 度 (< 0.2 mm) inferior sagittal sinus posterior pericallosal vein fornix epithalamic vein with tributaries superior vermian vein precentral cerebellar vein mamillary body sagittal slice (8 Tesla) 74 of 103

75 影像解析度的提升 (25 um) Rat kidney (7 Tesla) 75 of 103

76 ( ) 不 MRA 76 of 103

77 In-phase 77 of 103

78 (Multiple Sclerosis) reactivation Pre-Contrast Post-Contrast 78 of 103

79 CSF (FLAIR) T1WI T2WI FLAIR 79 of 103

80 3D Time-Of-Flight MRA Text 80 of 103

81 更 : 流量流神 81 of 103

82 流流量 ( reversed flow) SVC flow cardiac phase SVC flow profile in one cardiac cycle 82 of 103

83 hyperacute T2 5 after symptom onset 83 of 103

84 流 (perfusion) 列量 (CBV) 84 of 103

85 MR 療例 Stroke 2.5 hours 13 hours after I.A. Urokinase thrombolysis rmtt rmtt rcbv rcbv 85 of 103

86 ( 刺 ) : : 神 86 of 103

87 ( 刺 ) Cortical surface Cortical inflation 87 of 103

88 樂 professional amateur corrected p-value 0.05 corrected p-value of 103

89 不 (Anisotropy) 89 of 103

90 tracking ( 量 ) 90 of 103

91 量神 (tumor) : anatomy : 神 91 of 103

92 神 Sagittal Coronal 92 of 103

93 更 : MRI Chemical shift imaging (CSI) + + =? 93 of 103

94 94 of 103

95 MR T1 95 of 103

96 NMR 來理連了臨 96 of 103

97 MRI 臨利益良類 97 of 103

98 了? 98 of 103

99 例 99 of 103

100 : Case by Case (calcification)???! 100 of 103

101 論 : 數不 $ : PET > MRI > CT > X > US?? 101 of 103

102 參 Mould RF, A century of X-rays and radioactivity in medicine: with emphasis on photographic records of the early years. Institute of Physics Publishing, Bristol, UK, Bushberg JT et al., The essential physics of medical imaging, 2nd Ed. Williams & Wilkins, Baltimore, MA, Bernier DR et al.(ed), Nuclear medicine: technology and techniques, 4th Ed. Mosby, St. Louis, Missouri, Donohoe KJ et al., Teaching atlas of nuclear medicine. Thieme, New York, NY, Ultrasound imaging materials courtesy of Prof. Li Pai-Chi. Magnetic resonance imaging materials from my own course 102 of 103

103 Medical Imaging 103 of 103