查看文章

Targeted alpha therapy has the properties of direct ionization, oxygen independency, high linear energy transfer, a short half-life, and minimal depth of penetration, which are advantageous in cancer treatment. This modified, inexpensive, high-resolution, autoradiographic study of ²³²Th decay in a tissue specimen, to both locate and quantify individual alpha-particle origins, track lengths, and dose rates, utilized conventional Ilford Pan F Plus, 135–36, Black and White, 35 mm, ISO 50 film. Dose rates measured 0.14 cGy d⁻¹ in the liver, 0.03 cGy d⁻¹ in the right kidney, and 0.003 cGy d⁻¹ in the heart, leading to a dosimetric concern of where the final alpha-particle deposition occurs.