Radiation Dose Estimates for Tc-99m Red Blood Cells - In vivo Labeling

---

	Estimated Radiation Dose (mGy/MBq)
ORGAN	mGy/MBq	rad/mCi
Adrenals	5.4E-03	2.0E-02
Brain	2.8E-03	1.0E-02
Breasts	3.3E-03	1.2E-02
Gallbladder Wall	5.1E-03	1.9E-02
LLI Wall	4.6E-03	1.7E-02
Small Intestine	4.5E-03	1.7E-02
Stomach	4.6E-03	1.7E-02
ULI Wall	4.4E-03	1.6E-02
Heart Wall	1.6E-02	5.9E-02
Kidneys	6.9E-03	2.6E-02
Liver	6.5E-03	2.4E-02
Lungs	1.2E-02	4.3E-02
Muscle	3.6E-03	1.3E-02
Ovaries	4.7E-03	1.7E-02
Pancreas	5.7E-03	2.1E-02
Red Marrow	4.1E-03	1.5E-02
Bone Surfaces	6.6E-03	2.4E-02
Skin	2.3E-03	8.7E-03
Spleen	1.2E-02	4.4E-02
Testes	3.3E-03	1.2E-02
Thymus	5.7E-03	2.1E-02
Thyroid	3.6E-03	1.3E-02
Urinary Bladder Wall	1.5E-02	5.4E-02
Uterus	5.4E-03	2.0E-02
Effective Dose Equivalent	7.2E-03 mSv/MBq	2.7E-02 rem/mCi

Based on model in MIRD Dose Estimate Report No. 14 (data gathered in human subjects), J Nucl Med 31:378-380, 1990 (bladder voiding interval 4.8 hours). Blood activity distributed according to the assumed fractional distribution of blood in model by Hui and Poston.