FOR IMMEDIATE RELEASE ISORAY’S LIQUID CESIUM-131 (CESITREX®) RECIEVES FINAL REGULATORY

FOR IMMEDIATE RELEASE
ISORAY’S LIQUID CESIUM-131 (CESITREX®) RECIEVES FINAL REGULATORY
APPROVAL FOR USE IN GLIASITE® BRAIN CANCER TREATMENT SYSTEM
Revolutionary Therapy Now Available For Brain Cancers
Richland, WA (May 12, 2014) - - IsoRay Inc. (NYSE MKT: ISR), a medical technology company and innovator
in seed brachytherapy and medical radioisotope applications, today announced Isoray has now received final
approval from state of Washington Department of Health to manufacture its recently FDA cleared Liquid
Cesium- 131 (Cesitrex®) for use with GliaSite® balloon catheter for the treatment of metastatic and
glioblastoma brain cancers.
The GliaSite® balloon catheter can now incorporate the use of Liquid Cesium-131 for the treatment of
metastatic and glioblastoma brain cancers and management believes this combination will offer a number of
advantages in treating these debilitating brain cancers. Liquid Cesium-131 eliminates the need for a thyroid
block as required with Iodine-125, is safer for the patient and staff, and if a spill were to occur, it is an easier
cleanup than with other isotopes. With a specified dose of liquid Cesium-131 within the balloon is placed in the
tumor cavity most likely to contain cancer cells following surgery. This form of radiation is less likely to damage
healthy brain tissue than other available alternatives. The ability for the tumor to recur is greatly diminished by
treating the tumor bed immediately at the time of surgery with a single treatment, impacting patient longevity
and quality of life.
IsoRay CEO Dwight Babcock commented, "We are very excited to have our Liquid Cesium-131 isotope now
available for use with our GliaSite® balloon catheter system. With reimbursement codes already available, we
will immediately begin offering our newest innovation to major medical centers to establish patient studies,
ultimately resulting in these thought leaders reporting their study findings for peer review and publication. As a
company, we are witnessing a growing adoption of our products in hospitals and medical practices nationwide.
Equally important, we are proud to have reached this new milestone for patients who are searching for
treatment options and hope in their fight against brain cancer.”
IsoRay’s additional products include Cesium-131 seeds (loose and stranded), sutured seeds and seeds in a
stranded mesh. These products together with the GliaSite® balloon catheter system provide physicians with a
new powerful weapon in the battle against cancer
IsoRay is the exclusive manufacturer of Cesium-131. The pioneering brachytherapy therapy is one of
the most significant advances in internal radiation therapy in 20 years. Cesium-131 allows for the
precise treatment of many different cancers because of its unrivaled blend of high energy and its 9.7 day halflife (its unequaled speed in giving off therapeutic radiation).
In addition to its CMS codes, Cesium-131 is FDA-cleared and holds a CE mark for international sales in seed
form for the treatment of brain cancer, prostate cancer, lung cancer, ocular melanoma cancer, colorectal
cancer, gynecologic cancer, head and neck cancer and other cancers throughout the body. The treatment can
be deployed using several delivery methods including single seed applicators, implantable strands and seed
sutured mesh. IsoRay also sells several new implantable devices, including the GliaSite® radiation therapy
system.
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About IsoRay
IsoRay, Inc., through its subsidiary, IsoRay Medical, Inc. is the sole producer of Cesium-131 brachytherapy
seeds, which are expanding brachytherapy options throughout the body. Learn more about this innovative
Richland, Washington company and explore the many benefits and uses of GliaSite® and Cesium-131
by visiting www.isoray.com. Join us on Facebook/Isoray. Follow us on Twitter @Isoray.
Contact:
IsoRay Medical
[email protected]
(509) 375-1202
Or
Worldwide Financial
[email protected]
(954) 360-9998
Safe Harbor Statement
Statements in this news release about IsoRay's future expectations, including: the advantages of our products
and their delivery systems, whether IsoRay will be able to continue to expand its base beyond prostate cancer,
whether sales of our products will continue at historic levels or increase, whether the use of our products will
increase or continue, whether future studies of treatment of various cancers using our products will have
favorable results, whether clinical results achieved with treatment using Cesium-131 in the GliaSite® radiation
therapy system will be favorable, whether we will continue to partner with other companies, whether
awareness of our productsll other statements in this release, other than historical facts, are "forward-looking
statements" within the meaning of the Private Securities Litigation Reform Act of 1995 ("PSLRA"). This
statement is included for the express purpose of availing IsoRay, Inc. of the protections of the safe harbor
provisions of the PSLRA. It is important to note that actual results and ultimate corporate actions could differ
materially from those in such forward-looking statements based on such factors as physician acceptance,
training and use of our products, our ability to successfully manufacture, market and sell our products, our
ability to manufacture our products in sufficient quantities to meet demand within required delivery time periods
while meeting our quality control standards, our ability to enforce our intellectual property rights, whether
additional studies are released and support the conclusions of past studies, patient results achieved with our
products, successful completion of future research and development activities, our ability and the ability of our
distributors and customers to receive and maintain all required regulatory approvals in the U.S. and
internationally, continued compliance with ISO standards as audited by BSI, the success of our sales and
marketing efforts, changes in reimbursement rates, changes in laws and regulations applicable to our
products, and other risks detailed from time to time in IsoRay's reports filed with the SEC.