SEATTLE & BOSTON--(BUSINESS WIRE)--Calypso Medical Technologies, Inc. today announced that 23 abstracts highlighting the use of the Calypso® 4D Localization System™ will be presented this week at the 50th Annual Meeting of the American Society for Therapeutic Radiology and Oncology (ASTRO) at the Boston Convention and Exhibition Center. The studies report on a wide range of benefits of the Calypso System.