MOSAIQ System; customers with Siemens branded linear accelerators with a COHERENCE RT Therapist workspace version 2.1a and the 3rd party MOSAIQ Oncology Information System. MOSAIQ Oncology information system is owned and marketed by IMPAC Medical System, Inc. MOSAIQ is distributed by Siemens Medical Solutions USA, Inc, Radiation Oncology under a distributor contract with IMPAC Medical. Distributed by Siemens Healthcare, Concord, Ca. Product Usage: Medical charged particle radiation therapy s

Siemens sent a Customer Information letters to all affected customers. The Customer information letters inform customers of the release of MOSAIQ 2.00X3 SP5 which specifically addresses a safety issue that is only found when MOSAIQ is used with COHERENCE Therapist 2.1 MQ (also called RTT2.1A). This letter is to be kept with Customer information documentation. Update Instruction TH004/12S are being issued with the update. The Software update is delivered and installed by qualified Field Service Engineers. For questions, contact your responsible SIEMENS Service Engineer or Application Specialist.