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Table 4 Feature weight of TIRADS

From: A novel TIRADS of US classification

Feature

Weights

Feature reference weight (W i )

Malignant weight (score)

Composition

 Solid

1.6

0

 Mixed

0.2

0

 Cystic

 

− 2

Margins

 Ill-defined margins

3.7

3

 Microlobulated

5.5

6

Shape

 Irregular

6

6

Calcification

 Micro-calcification

6

6

 Macro-calcification

1.9

2

 No-calcification

0.4

1

Taller than wide

 <= 1

0.5

1

 > 1

6

6

Blood flow

 Messy

1.8

1

 Central

6

2

 Peripheral

0.7

0.5

 Focal

0

− 2

 No blood flow

0.4

0