Minimally Invasive Procedure for Oncology
29 Noviembre 2009 - 1:00PM
PR Newswire (US)
Siemens introduces a product portfolio for new treatment methods at
RSNA 2009 CHICAGO, Nov. 29 /PRNewswire/ -- At the 95th Scientific
Assembly and Annual Meeting of the Radiological Society of North
America (RSNA) from November 29 to December 3 at McCormick Place in
Chicago, Siemens Healthcare will introduce its comprehensive
portfolio for imaging in interventional oncology at booth #825,
East Building/Lakeside Center, Hall D. Using these minimally
invasive procedures for cancer therapy, the interventional
radiologist navigates catheters or needles in the millimeter range.
To this end, systems and applications are required that supply high
image quality for the detection of details in soft tissue. Siemens
provides high-end imaging systems and advanced applications for
this purpose, which support the physician throughout the entire
workflow, from tumor evaluation and procedure planning to therapy
and follow-up. (Logo:
http://www.newscom.com/cgi-bin/prnh/20070904/SIEMENSLOGO ) The
World Health Organization (WHO) predicts that cancer will become
the world's most frequent cause of death in 2010, replacing
cardiovascular diseases as the most common cause of death. More
than 10.6 million people are diagnosed with cancer each year. Of
these, 1.3 million are afflicted with lung cancer, 1.2 million with
breast cancer, and up to 1 million patients with colorectal tumors.
The number of people suffering from cancer is expected to increase
by another 50 percent by 2020 (source: WHO 2003). New, minimally
invasive procedures, suitable for the therapy of primary tumors and
for metastases, have established themselves in recent years. The
new procedures enable targeted tumor treatment via a catheter or a
needle, while angiography systems display the position of the
device in the patient's body to the physician. Since therapy takes
place locally, impact to the patient is minimalized and quality of
life improved as he or she can be released from hospital soon
afterward. These local procedures are advisable, especially for
patients who are advanced in years, have a poor general health
condition, or are afflicted with accompanying diseases, which do
not permit a major operation or aggressive chemotherapy. "At RSNA
2009, Siemens is pleased to demonstrate applications and
enhancements to the Artis zee platform designed to support the
phenomenal growth in interventional oncology procedures," said
Claus Grill, vice president, Cardiac, Interventional, Neuro and
X-ray Systems, Siemens Healthcare. "With tools for improved
planning, visualization, and needle guidance, as well as enhanced
patient access as delivered by the Artis zeego, physicians can more
effectively treat tumors in less invasive ways for patients."
syngo® DynaCT enables the display of soft tissue, including tumors
and of the complex structures of the blood vessels supplying them
during therapy. Thanks to short reconstruction times, abdominal
images can be made available to the treating physician within 22
seconds. An investigation recently conducted at Charite Hospital in
Berlin showed that syngo DynaCT leads to repositioning of the
catheter, and thus increases the reliability of the tumor
treatment, in 50 percent of all chemoembolizations(1). Large-volume
syngo DynaCT offers the interventional radiologist virtually
unlimited freedom of movement in combination with the robotic-based
angiography system Artis zeego®. The system's flat detector rotates
twice 220 degrees around the patient with such precision that
cross-sectional images covering 47 centimeters can be acquired.
These images enable more comprehensive anatomic coverage than soft
tissue images acquired with any other angiography system. The liver
and lungs can be covered fully. syngo Embolization Guidance enables
advanced planning of the embolization of tumor-feeding blood
vessels. Using this application, the vessel supplying the tumor can
be marked, and the centerline of the vessel is automatically
calculated, which is then superimposed on the live fluoroscopic
image, thus simplifying catheter guidance during tumor embolization
considerably. With syngo InSpace 3D/3D Fusion, previously acquired
CT, MR or PET/CT images can be fused with high-contrast 3D
angiography images or with syngo DynaCT datasets in order to
present all relevant diagnostic and interventional data at a
glance. The fused dataset can be overlayed on live fluoroscopic
images in the interventional lab and provides additional
information on the tumor during the procedure (e.g., regarding its
activity). If a tumor is to be treated with an ablative procedure,
it is especially important to position the needles that release the
energy to the tumor precisely. syngo iGuide helps to plan and
position the needle. The iGuide Cappa navigation system supports
the placement of radiofrequency and biopsy needles via
electromagnetic navigation without requiring any radiation.
Interventional procedures in oncology Interventional oncological
procedures can be divided into two categories: transcatheter
therapies and ablative therapies. Transcatheter therapies - During
chemoembolization, small particles are injected in the vessels
supplying the tumor via a catheter, until the vessel is occluded
and the blood supply to the tumor has been stopped. Since the
required nutrients and oxygen then remain absent, the tumor cells
located in this area die. In addition, a chemotherapeutic substance
is injected through the catheter and thus, placed directly on the
tumor (local chemotherapy). This chemotherapeutic substance also
causes the cancer cells to die off. During selective internal
radiotherapy, tiny microspheres with a diameter of only 20 to 40
micrometers (thousandths of a millimeter) containing a
radiation-emitting isotope, are injected in the blood vessels
supplying the tumor with the help of a catheter. Embolization and
radiation cause the cancer cells to die off. Ablative therapies -
Radiofrequency ablation (RFA) is currently the most commonly used
thermoablative procedure. Using an electric generator, a
high-frequency alternating current is generated outside of the
body. This current is guided through the skin and directly to the
center of the tumor via a cable and a long needle (probe) by means
of optical control. There the tissue is heated up within a radius
of several centimeters around the tip of the probe. Inside the
tumor, temperatures of 122 to 194 degrees Fahrenheit are reached
and the malignant tissue is positively "boiled away," thus,
permanently destroying the tumor. (1) Results of a study published
in European Radiology March 2009 by Dr. Meyer, University of
Berlin, Charite, Germany and Prof. Dr. Wacker; John Hopkins
Hospital, Baltimore. The Siemens Healthcare Sector is one of the
world's largest suppliers to the healthcare industry and a
trendsetter in medical imaging, laboratory diagnostics, medical
information technology and hearing aids. Siemens is the only
company to offer customers products and solutions for the entire
range of patient care from a single source - from prevention and
early detection to diagnosis, and on to treatment and aftercare. By
optimizing clinical workflows for the most common diseases, Siemens
also makes healthcare faster, better and more cost-effective.
Siemens Healthcare employs some 49,000 employees worldwide and
operates in over 130 countries. In fiscal year 2008 (to September
30), the Sector posted revenue of 11.2 billion euros and profit of
1.2 billion euros. For further information please visit:
http://www.siemens.com/healthcare.
http://www.newscom.com/cgi-bin/prnh/20070904/SIEMENSLOGO
http://photoarchive.ap.org/ DATASOURCE: Siemens Healthcare CONTACT:
Tom Schaffner, Media Relations, Healthcare Sector - Imaging &
IT Division, Siemens Medical Solutions USA, Inc., +1-610-448-1477,
Web Site: http://www.siemens.com/healthcare
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