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Apparent Activity Conversion Factor

Seeds with

131

Cs Radioactive Isotope

0.638 U.mCi

-1

versus

1.27 U.mCi

-1

for

125

I and 1.29 U.mCi

-1

for

103

Pd

Initial Dose Rate (at the prostate surface)

30 cGy.h

-1

versus

7 cGy.h

-1

for

125

I and 20 cGy.h

-1

for

103

Pd