"RapidArc performed very satisfactorily in its first treatments, addressing what would have otherwise been difficult brain tumor volumes," says Susan Short M.D., consultant clinical oncologist in charge of the brain unit at UCH. "It delivered lower overall dose to tissue outside the target area compared with IMRT, which was particularly important in the first case because the patient had received previous radiotherapy." Minimizing dose to healthy tissue reduces the possibility of complications.

"The radiotherapy department is very impressed and it is quite a straightforward treatment from the patient's point of view," she added, explaining that benign brain tumors can cause cranial nerve problems and visual problems if untreated. "We won't know yet whether it has been successful in shrinking the tumors as it can take some time to determine that, but certainly the shorter treatment time is more convenient and allows for a more comfortable treatment for our patients."

Anna Cassoni, lead clinical oncologist at University College London Hospitals NHS Foundation Trust (UCLH), said, "RapidArc produced a lower dose to the optic nerve than conventional IMRT treatment and its precision minimized exposure to surrounding critical tissues."

"The treatment is very quick and that's a good thing," said Jet Payne, aged 24, from Muswell Hill in London, who is undergoing the treatment to remove traces of her tumor following surgery at The National Hospital for Neurology and Neurosurgery, which is part of UCLH. "I just want everything to be back to normal again and I am looking forward to continuing with my life." Ms Payne was diagnosed in April when a scan revealed that a benign, but locally aggressive tumor, was pressing on her optic nerve. "I just woke up one morning with double vision. I thought it was a trivial sinus infection, I never for a moment thought it could be something this serious."

Faster treatments allow for greater precision, since there is less chance of patient or tumor movement during treatment delivery and, with less time on the treatment couch, also allow for greater patient comfort.Conventional IMRT treatments are slower and more difficult for radiotherapy radiographers because they target tumors using a complex sequence of fixed beams from multiple angles.

Since its introduction in early 2008, more than 270 hospitals worldwide have introduced RapidArc radiotherapy treatments into their clinical routine. Clatterbridge Centre for Oncology in the Wirral became the first in England to introduce RapidArc late last year and several other English cancer centers including hospitals in Exeter, Norwich, Leicester, Stoke, Ipswich and London have installed the system and will commence treatments early in 2010.

About Varian Medical Systems

Varian Medical Systems, Inc., of Palo Alto, California, is the world's leading manufacturer of medical devices and software for treating cancer and other medical conditions with radiotherapy, radiosurgery, proton therapy, and brachytherapy. The company supplies informatics software for managing comprehensive cancer clinics, radiotherapy centers and medical oncology practices. Varian is a premier supplier of tubes and digital detectors for X-ray imaging in medical, scientific, and industrial applications and also supplies X-ray imaging products for cargo screening and industrial inspection. Varian Medical Systems employs approximately 5,100 people who are located at manufacturing sites in North America, China, and Europe and in its 79 sales and support offices around the world.

About University College Hospital NHS Foundation Trust

UCLH comprises six hospitals - the flagship University College Hospital which opened in 2005 and five specialist hospitals including The National Hospital for Neurology and Neurosurgery.

CONTACT: Colette Bates, Executive Assistant, Corp Comms/Executive Services, Varian Medical Systems UK Ltd Tel: +44 (0) 01293 601203 Neil Madle, Editorial contact, Corporate Communications & Investor Relations Director, Varian Medical Systems Tel: +44 (0)7786 526 068 WWW: http://www.varian.com

((M2 Communications disclaims all liability for information provided within M2 PressWIRE. Data supplied by named party/parties. Further information on M2 PressWIRE can be obtained at http://www.presswire.net on the world wide web. Inquiries to info@m2.com.

- PaxScan 4336R, a 43cm x 36cm cassette size digital detector,
      that is the first NEMA size DR panel designed to replace standard film
      cassettes used in existing radiographic and multi-bucky applications.
      The panel is also available with a portable hand-held enclosure for use
      in mobile imaging systems.
    - PaxScan 4343R, a 43cm x 43cm detector, which is Varian's largest
      panel suitable for large field of view radiographic image acquisition.
      It is designed for permanent mounting in radiographic tables or wall
      stands.
    - MCS-6074 rotating anode X-ray tube for CT scanning, together with
      a line of replacement X-ray tubes that are available through Varian's
      Interay after-market sales group. The Interay group offers medical
      X-ray tubes "on demand" for the service and small OEM markets.

"By having inventory in Europe as well as a responsive technical and marketing team, we are able to provide superior product quality and customer service throughout the European Union," said Stefano Daniotti, European regional manager for Varian X-Ray Products.

European Sales & Service Center

Varian Medical Systems has a dedicated, bonded facility at its service center in Willich, Germany where X-ray tubes are available in inventory for rapid shipment. This facility reloads, rebuilds and distributes medical X-ray tubes for immediate delivery throughout Europe. The center also evaluates and repairs tubes. Varian's X-ray Products Group is headquartered in Salt Lake City, Utah.

About Varian Medical Systems

Varian X-Ray Products is a premier supplier of X-ray tubes and digital detectors for X-ray imaging in medical, dental, veterinary, scientific, and industrial applications. X-Ray Products is a business unit of Varian Medical Systems, Inc., of Palo Alto, California. Varian is the world's leading manufacturer of medical devices and software for treating cancer and other medical conditions with radiotherapy, radiosurgery, proton therapy, and brachytherapy. The company supplies informatics software for managing comprehensive cancer clinics, radiotherapy centers and medical oncology practices. The company also supplies X-ray imaging products for cargo screening and industrial non-destructive inspection. Varian Medical Systems employs approximately 5,100 people who are located at manufacturing sites in North America, China and Europe and in its 79 sales and support offices around the world. For more information, visit http://www.varian.com/.

FOR INFORMATION CONTACT:
    Elaine Fairless, Varian Medical Systems
    +1-801-978-5715   elaine.fairless@varian.com

Elaine Fairless of Varian Medical Systems, +1-801-978-5715,
elaine.fairless@varian.com

Expected next investor conference call information:
Conference Call Date: 10/29/2009
Conference Call Time (ET): 5:00 PM
Conference Call URL: http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=107558&eventID=2379126