_3 very important.ppt
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_3 very important.ppt
- 1. HOME philips PHYSICAL PRINCIPLES Signal Generation Changing how the world looks at MR
- 2. HOME philips
- 3. HOME philips nuclei, protons and spins signal generation longitudinal relaxation T1 transverse relaxation T2 exitation and relaxation relation between T1 and T2
- 4. HOME philips nuclei, protons and spins signal generation longitudinal relaxation T1 transverse relaxation T2 exitation and relaxation relation between T1 and T2
- 5. HOME philips ATOM proton positive charge neutron no charge elektron negative charge water atom proton nucleus signal generation nuclei, protons and spins
- 7. HOME philips electric charge + rotation + magnetism signal generation nuclei, protons and spins
- 8. HOME philips electric charge + rotation signal generation nuclei, protons and spins magnetism
- 10. HOME philips X Y Z signal generation nuclei, protons and spins summed magnetization
- 11. HOME philips X Y Z signal generation nuclei, protons and spins summed magnetization
- 12. HOME philips X Y Z signal generation nuclei, protons and spins summed magnetization
- 13. HOME philips 0,01 Tesla 0 Kelvin = - 274 C o o signal generation nuclei, protons and spins
- 14. HOME philips 20 Celsius o 5 ppm 0,5 Tesla 1,5 Tesla 15 ppm signal generation nuclei, protons and spins
- 15. HOME philips B0 signal generation nuclei, protons and spins
- 16. HOME philips B0 signal generation nuclei, protons and spins
- 17. HOME philips B0 signal generation nuclei, protons and spins
- 18. HOME philips B0 signal generation nuclei, protons and spins
- 19. HOME philips B0 signal generation nuclei, protons and spins
- 20. HOME philips B0 signal generation nuclei, protons and spins
- 21. HOME philips B0 signal generation nuclei, protons and spins
- 22. HOME philips B0 signal generation nuclei, protons and spins
- 23. HOME philips B0 signal generation nuclei, protons and spins
- 24. HOME philips B0 signal generation nuclei, protons and spins
- 25. HOME philips B0 signal generation nuclei, protons and spins
- 26. HOME philips B0 Precession Larmor frequency signal generation nuclei, protons and spins
- 27. HOME philips B0 f0 = x B0 f = frequency = constant of isotope B = magnetic field signal generation nuclei, protons and spins
- 28. HOME philips signal generation nuclei, protons and spins fo (0.5 T) fo (1.5 T) 21.3 MHz 42.6 MHz 63.8 MHz 20.0 MHz 40.1 MHz 60.2 MHz 8.6 MHz 17.2 MHz 25.7 MHz 5.7 MHz 11.3 MHz 17.1 MHz 5.4 MHz 10.7 MHz 16.1 MHz 1 H 19 F 31 P 23 Na 13 C Nucleus o (1.0 T) f
- 29. HOME philips signal generation nuclei, protons and spins 1 H 19 F 31 P 23 Na 13 C Sensitivity 1 0,83 0,066 0,093 0,016 Nucleus
- 30. HOME philips nuclei, protons and spins signal generation longitudinal relaxation T1 transverse relaxation T2 exitation and relaxation relation between T1 and T2
- 44. HOME philips X Y Z B0 Mz net magnetisation and 90° pulse signal generation exitation
- 45. HOME philips net magnetisation and 90° pulse X Z B0 Y signal generation exitation
- 46. HOME philips net magnetisation and 90° pulse X Y Z B0 Y signal generation exitation
- 47. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 48. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 49. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 50. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 51. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 52. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 53. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 54. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 55. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 56. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 57. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 58. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 59. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 60. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 61. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 62. HOME philips net magnetisation and 90° pulse X Y Z B0 signal generation exitation
- 63. HOME philips net magnetisation and 90° pulse X Y Z B0 M signal generation exitation
- 64. HOME philips net magnetisation and 90° pulse X Y Z B0 Mxy signal generation exitation
- 65. HOME philips nuclei, protons and spins longitudinal relaxation T1 transverse relaxation T2 exitation and relaxation relation between T1 and T2 signal generation
- 97. HOME philips nuclei, protons and spins longitudinal relaxation T1 transverse relaxation T2 exitation and relaxation relation between T1 and T2 signal generation
- 98. HOME philips longitudinal relaxation T1 Spin - lattice relaxation signal generation
- 106. HOME philips time Mz T1 definition T1: the time that a tissue needs to regain 63% of its original magnetisation 63% signal generation longitudinal relaxation T1
- 114. HOME philips nuclei, protons and spins longitudinal relaxation T1 transverse relaxation T2 exitation and relaxation relation between T1 and T2 signal generation
- 115. HOME philips transverse relaxation T2 Spin - Spin relaxation signal generation
- 132. HOME philips S time Free Induction Decay signal FID T2* signal generation transverse relaxation T2
- 133. HOME philips T2 S T2 63% definition T2: the time that passes untill 63% of the original signal has been lost time signal generation transverse relaxation T2
- 147. HOME philips 180º refocusing pulse signal generation transverse relaxation T2
- 148. HOME philips 180º 180º refocusing pulse signal generation transverse relaxation T2
- 149. HOME philips T2 envelope signal generation transverse relaxation T2
- 150. HOME philips in conclusion: • T1 relates to magnetisation • T2 relates to signal signal generation
- 151. HOME philips nuclei, protons and spins longitudinal relaxation T1 transverse relaxation T2 exitation and relaxation relation between T1 and T2 signal generation
- 152. HOME philips 0 time 100 Longitudinale and Transverse Relaxation: 90 o signal generation relation between T1 and T2
- 153. HOME philips 0 time 100 Longitudinale and Transversale Relaxation: at the same moment 90 o magnetisation signal signal generation relation between T1 and T2
- 154. HOME philips short T1 0 time 100 90 o 90 o signal generation relation between T1 and T2
- 155. HOME philips short T1 short T2 0 time 100 90 o 90 o signal generation relation between T1 and T2
- 156. HOME philips long T1 0 time 100 90 o 90 o signal generation relation between T1 and T2
- 157. HOME philips long T1 long T2 0 time 100 90 o 90 o signal generation relation between T1 and T2
- 158. HOME philips 0 time 100 90 o repetition time TR 90 o signal generation relation between T1 and T2
- 159. HOME philips 0 time 100 90 o 90 o echo time TE signal generation relation between T1 and T2
- 163. HOME philips signal generation relation between T1 and T2 T1 contrast
- 164. HOME philips time 90 o longitudinal relaxation = magnetisation signal generation T1 contrast
- 165. HOME philips time 90 o magnetisation cannot be measured! signal generation T1 contrast
- 172. HOME philips TE 10 ms TE 30 ms TE 40 ms TR 400 ms signal generation T1 contrast
- 173. HOME philips T1 weighted images: TR short TE short < 600 ms < 25 ms signal generation T1 contrast
- 174. HOME philips Fat bright bone marrow white matter muscle grey body fluids bone air black grey matter TR < 600 ms TE < 25 ms i.v.contrast signal generation T1 contrast
- 176. HOME philips Glioblastoma T1 T1 with Gadolinium signal generation T1 contrast
- 178. HOME philips T2 contrast signal generation relation between T1 and T2
- 187. HOME philips TR 2500 ms TE 20 ms TE 60 ms TE 100 ms TE 140 ms signal generation T2 contrast
- 188. HOME philips T2 weighted images: TR long TE long > 1800 ms > 80 ms signal generation T2 contrast
- 191. HOME philips T1 T1 + KM T2 signal generation T2 contrast