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Insights into Imaging

Table 2 Tissues and weighting factors proposed by the ICRP to estimate effective doses [5]

From: Dosimetric quantities and effective dose in medical imaging: a summary for medical doctors

Tissue

wT

∑ wT

Bone-marrow (red), Colon, Lung, Stomach, Breast, Remainder Tissues*

(Nominal wT applied to the average dose to 14 tissues)

0.12

0.72

Gonads

0.08

0.08

Bladder, Oesophagus, Liver, Thyroid

0.04

0.16

Bone surface, Brain, Salivary glands, Skin

0.01

0.04

  1. *Remainder Tissues (14 in total): Adrenals, Extrathoracic (ET) region, Gall bladder, Heart, Kidneys, Lymphatic nodes, Muscle, Oral mucosa, Pancreas, Prostate, Small intestine, Spleen, Thymus, Uterus/cervix
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