Target Volume Determination 2015

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StefanDelorme Division ofRadiology

Dynamic or static

Subtraction

Dynamic enhancement evaluation

21.05.14 |

• Initial signal rise • < 50% • 50% - 100% • > 100% • Gross signal evolution • Continuous increase • Plateau • Wash-out • Enhancement pattern • Homogeneous

Curve with 7 measuring points Parenchyma Curve with 3 measurements

Contrast enhancement

Plain

Enhanced

Subtraction

• From center to periphery

Time

• Fibroadenomas, lymph nodes

• From periphery to center • Carcinomas

StefanDelorme Division ofRadiology

Morphology

Multicentric breast carcinoma

21.05.14 |

• Diameter • Shape • Round, oval, polygonal, linear, tubular • Dendritic, spiculated, multiple longitudinal (Comedo-like) • Delineation

• Smooth • Unsharp • Enhancement pattern

• Homogeneous, septations • Inhomogeneous • Ring enhancement

• Thin, sharp -> Often with cysts or fatty necrosis • Thick, unsharp -> Suspicious

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