Target Volume Determination 2015

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StefanDelorme Division ofRadiology

MRI: Strengths

MRI: Weaknesses

Outline

21.05.14 |

• Excellent tissue contrast • Flexible assessment of tissue properties

• Slow • Not always geometrically correct • Artifacts • Motion • Metal • Air • Exclusions • Electronic devices • Pacemakers

• Computed tomography • How it works • Strengths • Weaknesses • Magnetic resonance imaging • How it works • Strengths • Weaknesses • Ultrasound • How it works • Strengths • Weaknesses

• Functional imaging • No ionizing radiation

• Insulin pumps etc. • Cochlea implants

• Metal

• Implants, clips not fixed to bone • Large tatoos

• Claustrophobia

StefanDelorme Division ofRadiology

Pre-ultrasound era…

Pulse-echo techniques

Interaction between sound and tissue

21.05.14 |

Reflection

Refraction

Scattering Absorption Divergence

Delorme, Debus: Duale Reihe Sonographie, Thieme

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