Target Volume Determination 2015

StefanDelorme Division ofRadiology

StefanDelorme Division ofRadiology

StefanDelorme Division ofRadiology

How to receive a signal

HF coils: Volume resonators

T1-weighting

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• Multi-pulse experiment • 90° HF pulse • Repetition time TR

Bicycle dynamo

Coil and rotating magnet

Rotating magnetic moment

z

S

N

M z

90°-Puls

M y

1,00

y

x

Zeit

StefanDelorme Division ofRadiology

StefanDelorme Division ofRadiology

StefanDelorme Division ofRadiology

T2-weighting

Gradients

Gradient tube

21.05.14 |

21.05.14 |

21.05.14 |

• Gradient

M x,y

• Used to localize an MR signal • Coils under electric current • Linearly increasing, superimposed fields

M z

1,00

0,50

Zeit t

0