Not too long ago, the capability of precisely directing and guiding a potent beam of radiation to eradicate a cancerous tumor without harming the healthy tissue around it was a pipe dream. Fodder for the imagination and science fiction.

For most of us, handheld devices put the “fun” in functional. In the medical world, these tools do much more — they help save lives.

ACT: What are some of the scenarios — decisions or investments — in which a hospital might want to consider doing a ...