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Swedish Cancer Institute Sees Major Improvements in Planning VMAT Cases for Cancer Patients with Elekta's New Monaco 3.20


10/4/2012 12:02:38 PM

ATLANTA, Oct. 2, 2012 /PRNewswire/ -- In two clinical SBRT cases and retrospective plan comparisons of 10 previously treated patients with cancer, physicists at Swedish Cancer Institute (SCI, Seattle, Wash.) have discovered that Elekta's latest release of Monaco® treatment planning system version 3.20 provides significant benefits in dose conformity, delivery efficiency and sparing of organs-at-risk. SCI has been evaluating Monaco 3.20 since April.

In VMAT planning cases, physicists led by SCI Medical Physicist Daliang Cao, Ph.D., compared Monaco 3.20 with the previous version of Monaco and found that Monaco 3.20 with Segment Shape Optimization (SSO) can provide much more uniform target dose without significantly compromising the sparing of critical normal structures. Compared with the previous version, they also observed that Monaco 3.20 reduced beam delivery time by 37 percent (1.3 min.) in some cases.

"In addition, Monaco 3.20 provides similar or better dose distributions, dose conformity and sparing of organs-at-risk compared with our other VMAT planning system," Dr. Cao reports. "We look forward to putting Monaco 3.20 into routine clinical practice."

SSO is key to Monaco 3.20
The new Segment Shape Optimization (SSO) enables improved dose conformity, plan quality and delivery efficiency through its proprietary approach to smoothing and clustering segments, then optimizing beam weights and shapes. Powered by the Monte Carlo algorithm, the results are plans that improve sparing of organs-at-risk and dose conformality.

In addition to improved plan quality over the previous Monaco release, with SSO, Monaco VMAT can reduce the number of segments and therefore the amount of MLC leaf motion in the plan. The result is a 30-50 percent improvement in delivery efficiency, according to Dr. Cao.

In SCI's SBRT cases, Dr. Cao found that Monaco VMAT planning takes just a few hours to obtain a reasonable plan, compared with the 1-2 day process using the center's existing VMAT planning system.

"The target dose also tends to be more uniform, with less dose spill out," he says. "In addition, Monaco can provide a sharper dose gradient, which can reduce the dose to nearby critical structures. Conversely, Monaco can maintain the same critical structure dose while providing a higher target dose."

Learn more about Monaco 3.20 at www.elekta.com/rtp.

For further information, please contact:

Johan Andersson Melbi, Director, Investor Relations, Elekta AB
Tel: +46 702 100 451, email: johan.anderssonmelbi@elekta.com
Time zone: CET: Central European Time

Michelle Joiner, Director, Global Public Relations and Brand Management, Elekta
Tel: +1 770-670-2447, email: michelle.joiner@elekta.com
Time zone: ET: Eastern Time

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, radiosurgery and brachytherapy, 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.

Today, Elekta solutions in oncology and neurosurgery are used in over 6,000 hospitals worldwide. Elekta employs around 3,400 employees globally. The corporate headquarters is located in Stockholm, Sweden, and the company is listed on the Nordic Exchange under the ticker EKTAb. Website: www.elekta.com.

SOURCE Elekta



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