To present in brief form to this audience of practical surgeons the experience of three years' use of radium, I have chosen to demonstrate graphically by a few colored plaster casts the results that may be obtained. A few facts are worth more to us than pages of historical review or speculation.
I would not have ventured to present the subject had it not been my privilege to use a rather large quantity of the most powerful radium yet made. Therefore, a fair estimate of its efficiency can be given.
Discarding all weaker specimens, I have used:
The working unit of the most powerful and pure radium manufactured is 10 milligrams radium bromid 1,800,000, and is best used in a small cell covered by a thin layer of mica. This, for obvious reasons, cannot be sterilized for introducing into tumors, therefore I have had six such cells emptied into one