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Pioneering Image-Guided Radiotherapy Takes Place Using Varian Equipment At Top Cancer Hospital In Belgium
Cancer patients in Belgium have begun receiving a new more precise form of radiotherapy using X-ray imaging during treatments to locate and focus beams more closely on
tumors. The new cancer treatment called image-guided radiotherapy (IGRT) is
being offered at the university hospital of Leuven using equipment from
Varian Medical Systems.
Clinicians at UZ Gasthuisberg are using a new Clinac(R) medical linear
accelerator equipped with an On-Board Imager(TM) device to capture
high-quality images of tumors at the time of treatment. The fully automated
device enables medical staff to sharpen their aim on the tumor by quickly
repositioning patients on the treatment couch immediately prior to
treatment.
The system takes radiographic, fluoroscopic and 3D conebeam CT images
to give clinicians an optimum view of the tumor site and surrounding bones,
organs and soft tissue. Using this information, they can adjust the
position of the patient automatically without having to re-enter the
treatment room, avoiding the need for time-consuming manual adjustments and
ensuring the busy center can avoid longer treatment times and growing
waiting lists for their patients. Dr. Karin Haustermans, professor in
radiation oncology, said, "This is a major benefit because it means these
improved imaging techniques can be introduced without putting too much
pressure on the system."
Prior to the advent of IGRT, radiation oncologists had to contend with
variations in patient positioning and with respiratory motion by treating a
relatively large margin of healthy tissue around the tumor. IGRT enables
doctors to minimize the volume of healthy tissue exposed to the treatment
beam. Potentially, image data from IGRT tools like the On-Board Imager
device will be used to note changes in tumor size and shape over a course
of treatment, and make real-time adaptations to the treatment plan.
All prostate cancer patients at the hospital are imaged using the
On-Board Imager device's radiographic mode immediately prior to treatment.
In August, the hospital used the imager for the first time to capture a 3D
conebeam CT image of a 62-year-old rectal cancer patient.
"We were very impressed with the conebeam CT image and online matching
with the original CT image worked perfectly," adds Dr. Haustermans. "As the
patient is male we were also able to check the prostate, which was very
visible despite the lack of markers." Images from the new device are also
incorporated into the hospital's ongoing research programs, including major
studies on image guided radiotherapy and PET imaging for rectal cancer.
Varian's Acuity(TM) imager for treatment planning and verification is
also used at the hospital for patient set-up, especially for rectal cancer
patients who lie on a "belly-board" and cannot therefore have conventional
CT scans.
UZ Gasthuisberg treats up to 200 patients per day on four Varian
Clinac(R) linear accelerators, with a fifth machine due to be installed in
the near future. The hospital was one of the earliest in Europe to
introduce intensity modulated radiotherapy (IMRT), a more accurate
treatment process that limits side effects while enabling doses to be
increased by automatically shaping beams to match the shape of the tum or.
The hospital is now using IMRT for prostate, head & neck, oesophagus and
rectal cancer treatments.
Walter Frei, head of Varian's oncology systems business in Europe,
says, "This leading scientific center is a great example of how these
advanced radiotherapy techniques are being put into practice in a routine
clinical fashion. In addition to improving precision, our systems focus on
automation and fast, comfortable treatment processes, which makes them
particularly suitable for busy centers such as this one."
About Varian Medical Systems Varian Medical Systems, Inc of Palo
Alto, California
It is the world's leading manufacturer of medical technology
for treating cancer with radiotherapy and neurological conditions with
radiosurgery. The company is also a premier supplier of X-ray tubes and
flat-panel digital subsystems for imaging in medical, scientific, and
industrial applications. Varian Medical Systems employs approximately 3,600
people who are located at manufacturing sites in North America and Europe
and in its 56 sales and support offices around the world. In Europe, the
company operates manufacturing and engineering centers in Baden
(Switzerland), Crawley (England), Haan (Germany), Helsinki (Finland) and
Toulouse (France) and has headquarters for Europe, Middle East, India and
Africa (EMEA) based in Zug, Switzerland. Additional information is
available on the company's web site at http://www.varian.com.
Forward Looking Statements
Statements in this press release regarding future business, events,
plans, objectives, expectations, estimates, and other similar matters,
including, but not limited to, statements using the terms "can" and
"expect," constitute forward-looking statements within the meaning of the
Private Securities Litigation Reform Act of 1995. Such forward-looking
statements contained in this press release are subject to risks and
uncertainties that could cause actual results to differ materially from
those anticipated, including, but not limited to, the risks described in
the Company's Annual Report on Form 10-K and other reports filed from time
to time by the Company with the U.S. Securities and Exchange Commission.
These forward-looking statements represent the Company's judgment as of the
date of this press release. The Company assumes no obligation to update or
revise these forward-looking statements because of new information, future
events, or otherwise. Furthermore, notwithstanding any specific events
announced in this press release, the Company's quarterly and annual
financial results are subject to such risks and uncertainties described in
the Company's Annual Report on Form 10-K and other reports filed from time
to time by the Company with the U.S. Securities and Exchange Commission and
actual results may differ materially from those anticipated.
Varian Medical Systems
http://www.varian.com
Pionierat Image-Guided Radioterapia are loc Varian Utilizarea echipamentelor de Sus Rac spital din Belgia - Pioneering Image-Guided Radiotherapy Takes Place Using Varian Equipment At Top Cancer Hospital In Belgium - articole medicale engleza - startsanatate