New Release of Elekta's Monaco Treatment Planning System Prepares Software for Stereotactic Radiation Therapy

ATLANTA, July 18, 2011 /PRNewswire/ -- Among the many new features of Monaco® 3.0, Dynamic Conformal Arc (DCA) Therapy provides clinicians with a simple way to deliver highly conformal stereotactic plans by using the multi-leaf collimator (MLC) to dynamically conform around a target as the treatment beam rotates around the patient. DCA recently received 510(k) clearance for Monaco from the U.S. Food and Drug Administration.

"DCA can be used to render more conformal plans by creating multiple arcs in a non-coplanar fashion – in such a way that the geometry of each arc minimizes the dose to the adjacent organs during the gantry rotation," says Todd Powell, Executive Vice President, Elekta Software. "When this technique is used in conjunction with micro-MLCs – such as the new Apex™* MLC, which is now supported in Monaco 3.0 – it can yield very conformal plans and is much easier in terms of quality assurance measurements."

DCA is particularly well-suited for stereotactic treatments because it eliminates the need to modulate the typically higher doses per fraction in stereotactic therapy. DCA's benefit, therefore, is fewer monitor units and reduced treatment time compared with other delivery methods.

"With DCA, clinicians have the option to obtain a comparably conformal plan with approximately half the treatment time and reduced scatter dose," Powell adds.

source: PR Newswire

85 Percent of CyberKnife® Sites Within Europe Performing Prostate Stereotactic Body Radiation Therapy (SBRT)

SUNNYVALE, Calif., May 11, 2011 /PRNewswire/ -- Accuray Incorporated (Nasdaq: ARAY), a global leader in the field of radiosurgery, announced today that 85 percent of European CyberKnife® centers are performing prostate SBRT to treat localized prostate cancer. There is an increasing trend towards treating prostate cancer patients with a hypofractionated regimen.

"More than 25 percent of our CyberKnife patients are being treated for prostate cancer with further growth anticipated," said Dr David Feltl, Head of the Oncology department, Ostrava University Hospital, Ostrava, Czech Republic.

At the Annual Congress of the European Society for Therapeutic Radiology and Oncology (ESTRO) in London, UK this growth was supported by strong clinical evidence presented at a symposium focused on prostate cancer co-chaired by Prof. Eric Lartigau, Centre Oscar Lambret, Lille, France, and Prof. Volker Budach, M.D., Ph.D., Charite – Universitatsmedizin Berlin, Germany.

"Offering CyberKnife non-invasive treatments to our patients provides excellent 5-year tumor control and very low level of toxicity as recently published in Radiation Oncology 2011," said Prof. Eric Lartigau.

"There is a strong academic interest to further drive prospective randomized clinical evidence for prostate SBRT with the CyberKnife System leading the clinical trend," said Prof. Volker Budach.

"The long term efficacy and toxicity outcomes of single and multi-center studies are supported by many key publications and presentations on CyberKnife prostate SBRT. Supported by an increasing foundation of solid clinical evidence we have seen a 20 percent increase in worldwide prostate cancer treatment as compared to a similar period last year," said Omar Dawood, vice president, Medical Affairs, Accuray Incorporated.

source: PR Newswire

Mirada Medical develops radiation therapy workflows for multidisciplinary cancer management

Oxford, UK, Philadelphia, PA, 3rd May 2011: Bridging radiology and radiation oncology, innovative RT workflows developed by Mirada Medical Limited are the latest in Mirada's portfolio of oncology products on display at the European Society for Therapeutic Radiology and Oncology (ESTRO) Anniversary Conference, London UK 8th-11th May 2011.

New RT workflows in XD3, Mirada's multi-modality and multi-timepoint oncology software, harness the power of CT-CT registration between the planning CT and PET/CT to provide functional imaging information for target delineation with accuracy and speed. XD3's registration engine also performs tri-modal fusion between PET/CT and MR in order to immediately realise the benefits of PET-MR for treatment planning, without having a PET-MR scanner. This software-based PET-MR presents powerful information during tumour assessment, staging, and delineation, with better visualisation of soft tissue abnormalities and tumours best localised using MR, such as lymph nodes in the neck.

Central to XD3 is the ability to assess, quantify and compare patient studies across unlimited timepoints, in custom display layouts, simultaneously. Through registration, users can easily propagate VOIs across timepoints, creating tables and graphs which track quantification statistics for comparison and reporting. Statistics are configurable for each user and include PERCIST, RECIST, WHO, among others.

source: Mirada Medical

ASTRO publishes evidence-based guideline for thoracic radiotherapy

Fairfax, Va., April 27, 2011 - The American Society for Radiation Oncology (ASTRO) has developed a guideline for the use of external beam radiation therapy, endobronchial brachytherapy and concurrent chemotherapy to palliate thoracic symptoms caused by advanced lung cancer. The guideline will be published in Practical Radiation Oncology, an official journal of ASTRO.

Many patients whose lung cancer has spread receive radiation therapy to treat symptoms related to cancer, such as cough, shortness of breath, bronchial obstruction and chest pain. However, the exact treatment approach can vary from doctor to doctor. This variation caused the Guidelines Subcommittee of ASTRO's Clinical Affairs and Quality Committee (CAQC) to identify the use of palliative thoracic (or chest) radiation therapy as a high-priority topic needing an evidence-based guideline.

This panel was co-chaired by George Rodrigues, MD, MSc, a radiation oncologist and clinician scientist at London Health Sciences Centre in London, Ontario, Canada, and Benjamin Movsas, MD, chairman of radiation oncology at Henry Ford Health System in Detroit.

"Radiation therapy can be extremely helpful to alleviate symptoms caused by lung cancer, such as shortness of breath and chest pain," Dr. Rodrigues said.

source: ASTRO

Robotic Couch Provides Extra Degree of Precision for Patients Undergoing Radiation Therapy for Cancer

NEW YORK, April 25, 2011 /PRNewswire/ -- Accuracy in radiation therapy demands careful targeting and patient positioning – precision measured in millimeters. The Farber Center for Radiation Oncology, the first and only freestanding cancer center of its kind in Manhattan, is among the first treatment centers to adopt Elekta's HexaPOD™ evo RT system, a unique fully robotic patient positioning system that enables clinicians to fine-tune the patient's treatment position not only in three dimensions (x, y and z), but also pitch, roll and yaw. These six independent degrees of freedom enable doctors to easily reposition patients, which decreases treatment time and achieves maximum accuracy.

"The HexaPOD system is just one more smart way for us to provide the most accurate – and therefore, least invasive – radiation treatment possible," says Dr. Leonard Farber, Radiation Oncologist and founder of the Farber Center, which has been using the new HexaPOD system in patient treatments.

"The imaging technology on our Elekta Infinity™ treatment system allows us to detect any organ movement before therapy with the patient in the treatment position. Then, HexaPOD helps us make extra, minute position changes to obtain the most precise treatment possible – zeroing in on the target, while also avoiding radiation exposure to normal healthy tissue to the greatest extent possible."

source: PR Newswire

Radiation at Time of Lumpectomy May Offer Faster, More Precise Treatment for Breast Cancer Patients

CHICAGO, April 12, 2011 /PRNewswire-USNewswire/ -- Northwestern Medicine physicians are currently utilizing a new treatment option for breast cancer that allows women to receive a full dose of radiation therapy during breast conserving surgery. Traditionally, women who opt to have a lumpectomy must first have surgery then undergo approximately six weeks of radiation. This schedule can be challenging for women who have busy schedules or do not have access to a center offering radiation therapy. In some cases, the demanding schedule causes women to not comply with the recommended course of treatment, increasing their risk for cancer recurrence. Intraoperative radiation therapy combines lumpectomy and the full course of radiation during a two and half hour operation.

"With this technique, the radiation oncologist will be in the operating room administering radiation to the tumor bed immediately following the surgeon's removal of the tumor," said William Small, Jr., MD, vice chairman radiation oncology at Northwestern Memorial Hospital and professor of radiation oncology at Northwestern University Feinberg School of Medicine. "Instead of waiting a month to start the radiation therapy, it will take place immediately. A patient will wake up from surgery and have received the full amount of radiation therapy that is typically administered over six weeks."

Currently, a breast cancer patient first sees a surgeon to remove the tumor and then is referred to a radiation oncologist for follow up radiotherapy. Intraoperative radiation therapy allows physicians to deliver radiotherapy at the time of surgery directly to the area where the cancer was removed. Using a system called IntraBeam®, the radiation oncologist is now able to be in the operating room with the surgical oncologist, delivering the entire dose of radiation during surgery.

source: PR Newsire

Elekta Software Making Strong Inroads in Clinics Providing Proton Therapy for Patients with Cancer

VILLIGEN, Switzerland, March 29, 2011 /PRNewswire/ -- The Paul Scherrer Institute (PSI) in Switzerland and Elekta are collaborating to further develop treatment planning and oncology information systems (OIS) for proton therapy, a form of external beam radiation that uses protons instead of X-rays or electrons to treat certain types of cancer and other diseases.

PSI integrated Elekta's XiO® treatment planning system and MOSAIQ® OIS into its Centre for Proton Therapy to manage the flow of information and image data between treatment delivery, treatment planning, treatment simulation and the patient's electronic medical record. In clinical use for nearly a decade, XiO is in use at more proton and carbon ion facilities than any commercial vendor with a similar product. Elekta recently received 510(k) clearance from the U.S. Food and Drug Administration for XiO to plan spot scanning, a proton therapy delivery method that involves constructing a highly conformal placement of dose to the tumor by using thousands of small individual beamlets instead of a single large beam.

"Through XiO, Elekta provides a combination of advanced tools for scanned proton beam therapy. Elekta also provides a clear road map to further develop intensity modulated, image guided and adaptive proton therapy," says Antony Lomax, Ph.D., Professor and Head of Medical Physics at the Center for Proton Therapy at PSI. "A deciding factor in entering into this relationship was Elekta's willingness to leverage the significant experience of our team to increase the capabilities of XiO proton planning."

source: Elekta

Statins make radiation more effective at curing prostate cancer

Fairfax, Va., March 23, 2011 - Men with high-risk prostate cancer who take statin drugs commonly used to lower cholesterol while receiving radiation therapy are less likely to have their cancer return than patients who do not take these medications, according to a study published in the March issue of the International Journal of Radiation Oncology•Biology•Physics, an official journal of the American Society for Radiation Oncology (ASTRO).

In the study, 1,681 men with high-risk, localized prostate cancer were treated with radiation therapy between 1995 and 2007. Of them, 382 (23 percent) were taking statin medication at diagnosis and throughout the treatment. Statins are a class of drugs used to lower the cholesterol level in people with or at risk of cardiovascular disease. The median follow-up time was approximately six years.

Researchers found that the men taking statins were less like to relapse than other patients. At five years, 11 percent of men taking statins saw their cancer return compared to 17 percent of patients not taking the medication. At eight years, 17 percent of men on statins had a relapse compared to 26 percent not taking the drug.

"In our retrospective study, we have demonstrated that statin use during radiotherapy is associated with improved biochemical tumor control among high-risk patients," Michael J. Zelefsky, M.D., the senior author of the study and a radiation oncologist at Memorial Sloan-Kettering Cancer Center in New York, said. "This study, along with other emerging studies, strongly suggests that statin use improves outcomes in patients treated with definitive radiation therapy."

source: ASTRO

Experimental radioprotective drug safe for lung cancer patients, says Pitt study

PITTSBURGH, March 22 – Patients with advanced non-small cell lung cancer can safely take an experimental oral drug intended to protect healthy tissue from the effects of radiation, according to a study led by researchers at the University of Pittsburgh Cancer Institute (UPCI) and published in this month's issue of Human Gene Therapy.

The findings support further clinical testing of the agent, called manganese superoxide dismutase (MnSOD) plasmid liposome, to determine if giving it alongside chemotherapy and radiation will prevent damage to normal cells that is the typical cause of side effects in cancer treatment, said senior investigator Joel S. Greenberger, M.D., professor and chair, Department of Radiation Oncology, Pitt School of Medicine, and co-director of the lung and esophageal cancer program at UPCI.

"If we can sufficiently protect tissues that are normal, we should be able to deliver our cancer treatments more effectively and perhaps even at higher doses," he explained. "Our aim is to improve the quality of life of patients by minimizing side effects while providing the best treatment for their cancers."

For the safety study, 10 patients with inoperable stage III non-small cell lung cancer took oral doses of MnSOD plasmid liposome twice weekly for a total of 14 doses during seven weeks of conventional chemotherapy and radiation treatment. The agent, which boosts levels of an antioxidant the body makes naturally, is made of fat droplets containing the gene that produces MnSOD. When swallowed, it is absorbed by cells in the esophagus, which is a common site for severe side effects during radiation treatment for lung cancer.

source: EurekAlert

Toshiba's Aquilion Large Bore CT System Improves Accuracy Of Radiation Oncology Planning At Great River Medical Center

TUSTIN, Calif., March 7, 2011 – When planning radiation therapy treatments for cancer, it is critical to accurately target the tumor and spare healthy tissue. In order to achieve this, a CT simulation of the patient in the ideal treatment position, with excellent image quality and without truncating anatomy, is required. Standard bore CT systems constrain patient positioning by limiting the use of positioning devices like inclined breast boards, because the bore and scan field-of-view cannot accommodate a patient positioned off-center. Furthermore, the anatomy in the images of large patients is frequently clipped by the small field-of-view of standard bore CTs, potentially compromising treatment plans and the ability to use advanced techniques like IMRT and arc treatments. The Cancer Care Center at Great River Medical Center in West Burlington, Iowa, is using Toshiba America Medical Systems’ AquilionTM Large Bore CT system to minimize the constraints imposed by standard bore CTs on its treatment plans.

The Aquilion Large Bore helps Great River Medical Center treat oncology patients, including breast, prostate and colon cancer patients and enables physicians to treat patients with IMRT. The system’s large bore allows more positioning options for patients such as with their arms over their head or their legs in a frog leg position, allowing Great River’s therapists to capture the studies needed to optimally treat all patients.

source: Toshiba Medical