A message from Nuclear Medicine: Due to reactor production problems, there is a nationwide shortage of radioactive Xenon 133 gas. We expect to receive our next shipment of this isotope on Saturday, June 1. We currently have four vials on the shelf. Please be advised that the Nuclear Medicine department will not be able to perform the ventilation portion of the lung scan procedure when these vials are depleted until June 1. Questons? Contact Kathleen S. Shoul, manager, at x4942 or kshoul@AAHS.org.