Radiation Dose Estimates for I-131 MAA

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	Estimated Radiation Dose (mGy/MBq)
ORGAN	mGy/MBq	rad/mCi
Adrenals	1.8E-01	6.7E-01
Brain	2.2E-02	8.2E-02
Breasts	8.3E-02	3.1E-01
Gallbladder Wall	2.5E-01	9.4E-01
LLI Wall	3.8E-02	1.4E-01
Small Intestine	6.1E-02	2.2E-01
Stomach	8.4E-02	3.1E-01
ULI Wall	7.8E-02	2.9E-01
Heart Wall	1.6E-01	5.9E-01
Kidneys	1.4E-01	5.3E-01
Liver	2.0E+00	7.5E+00
Lungs	2.3E+00	8.5E+00
Muscle	6.0E-02	2.2E-01
Ovaries	4.4E-02	1.6E-01
Pancreas	1.5E-01	5.6E-01
Red Marrow	7.3E-02	2.7E-01
Bone Surfaces	6.3E-02	2.3E-01
Skin	3.8E-02	1.4E-01
Spleen	7.3E-02	2.7E-01
Testes	2.7E-02	1.0E-01
Thymus	9.0E-02	3.3E-01
Thyroid	4.1E-02	1.5E-01
Urinary Bladder Wall	4.9E-01	1.8E+00
Uterus	5.2E-02	1.9E-01
Effective Dose Equivalent	5.0E-01 mSv/MBq	1.8E+00 rem/mCi

Model in ICRP 53 is adopted (data gathered in human subjects). Assumed distribution and retention:

Lungs 85% Tb = 6 hr 15% Tb = 72 hr
Liver 25% uptake Tb = 6 hr, elimination Tb = 120 hr
Kidneys residence time = .108 hr
Urinary bladder receives clearance from liver and long term clearance from lung. Bladder voiding interval 4.8 hours.

Estimate calculated using phantom of Cristy & Eckerman (Report ORNL/TM-8381/V1 & V7)