Automation Shaving More Time Off of Radiation Therapy for Patients With Cancer

By Elekta, PRNE
Tuesday, April 26, 2011

Advanced Elekta software enables 3D detection of implanted gold seeds in prostate, surpasses conventional 2D techniques

CRAWLEY, England, April 27, 2011 - As image guided radiation therapy (IGRT) techniques have enhanced
radiotherapy precision, Elekta continues working to decrease treatment
session times through automated IGRT tools. Odense University Hospital (OUH,
Odense, Denmark) clinicians are the first in the world to use a 3D seed
matching feature of Elekta's Intuity(TM) IGRT package. The software quickly
and automatically pinpoints the position of gold seeds that doctors implant
in the prostate to confirm the organ's position before each treatment.

3D detection provides boost to proven gold seed method

Because the prostate can shift position inside the body, implanted gold
seeds - also known as fiducial markers - have been used as a fixed standard
of reference for comparison or measurement every time the patient has their
radiation treatment. In contrast to soft tissues such as the prostate, the
gold seeds are more easily visualized using 3D cone beam CT. Localizing the
prostate's position in this way can help doctors reduce treatment margins
around the prostate, reducing toxicity to the rectum and bladder and
resulting in fewer side effects.

Not only does the software's automation ensure that the procedure is
executed quickly and without human error, it also is superior to current

    -- Due to the markers' high contrast, clinicians can use a low dose -
       comparable to that of 2D techniques - to perform the scan

    -- At maximum speed, the 3D scan is rapid, therefore the time to acquire
       the scan and register the markers is comparable to 2D methods

    -- The 3D technique clearly separates the markers, avoiding the
       possibility that a marker will obscure another, a problem noted using
       2D techniques

OUH clinicians have been using 3D seed matching with success since
January 2010 on three (of four) Elekta Synergy(R) systems on which Intuity is

"Previously, we were manually matching the markers' position on the
planning scans with their position on the cone beam CT scan that we acquire
with the patient on the treatment table," says Knud Aage Werenberg, head
physicist at OUH. "This only took about two minutes, but 3D seed matching
takes about half the time. It is really fast and the results are more
consistent because the task is automated. Equally important, the patient
spends less time on the treatment table."

Learn more at

* Intuity is a feature set of XVI R4.5. Approval of indications may vary
between different countries. Additional regulatory clearances may be required
in some markets.

About Elekta

Elekta is a human care company pioneering significant innovations and
clinical solutions for treating cancer and brain disorders. The company
develops sophisticated, state-of-the-art tools and treatment planning systems
for radiation therapy and radiosurgery, as well as workflow enhancing
software systems across the spectrum of cancer care.

Stretching the boundaries of science and technology, providing
intelligent and resource-efficient solutions that offer confidence to both
healthcare providers and patients, Elekta aims to improve, prolong and even
save patient lives, making the future possible.

Today, Elekta solutions in oncology and neurosurgery are used in over
5,000 hospitals globally, and every day more than 100,000 patients receive
diagnosis, treatment or follow-up with the help of a solution from the Elekta

Elekta employs around 2,500 employees globally. The corporate headquarter
is located in Stockholm, Sweden, and the company is listed on the Nordic
Exchange under the ticker EKTAb. For more information about Elekta, please

Stina Thorman, Vice President Corporate Communications, Elekta AB, +46-8-587-254-37, stina.thorman at, Time zone: CET: Central European; Michelle Lee, Director, Global Public Relations and Brand Management, Elekta, +1-770-670-2447, michelle.lee at, Time zone: EDT: Eastern Daylight

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