Patent 11857803 was granted and assigned to Alpha Tau Medical on January, 2024 by the United States Patent and Trademark Office.
An interstitial source including a base suitable for implanting in a tumor and alpha emitting atoms attached to the base, with a concentration of at least 6 μCi per centimeter length. The alpha emitting atoms are attached to the base, with a desorption probability upon radioactive decay of not more than 30%.