AccSys Technology, Inc., a California-based supplier of ion linear accelerator systems, manufactures an alternative system to cyclotrons. Its PULSAR PET Isotope Production System is a linac-based proton accelerator used for the production of positron emitting isotopes. It's smaller and lighter than a traditional cyclotron system. Unlike cyclotrons, linacs don't call for any specially reinforced foundation or floor.

"Size at some point translates into money in the sense that cyclotrons require special construction to handle the increased weight," says Gerard Goldner, COO and executive vice president of AccSys Technology, Inc.


PULSAR also doesn't require any special shielding, which is an advantage for smaller facilities that may not have the space to install a cyclotron. Linacs also require less protective material because they have less activated components.

"Linacs have lower activation because of their geometry," says Goldner. "Particles passing through the linear accelerator are not colliding with any objects in their path."










Currently, three PULSAR systems are in place and one more system, a mobile unit, will be shipped this fall. Two systems found homes in isotope product facilities: Isotopia Molecular Imaging in Tel Aviv, Israel and Advanced Medical Isotope Corporation in Kennewick, Wash. One more PULSAR is installed at Hitachi General Hospital in Hitachi City, Japan.

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