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Siemens Radiology Ultra Sound
Ensemble Contrast Imaging
new model




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Phase-inversion ultrasound offers
new views of tumors and organs
Innovations in contrast agent
ultrasound imaging offer clinicians new clues for evaluating cancer and determining the
health of vital organs.
Used with ultrasound contrast agents, Siemens patented Ensemble Contrast Imaging
technology provides rare, detailed views of blood flow within microscopic feeder vessels
and illuminates the characteristics of blood flow within vital organs. This enables
clinicians to: |
- Spotlight tough-to-detect lesions within the liver, prostate, pancreas and kidney;
- Obtain detailed views of organ perfusion to determine organ vitality;
- Analyze complex blood flow patterns around tumors to help detect abnormalities; and
- Enhance fundamental gray scale imaging.
Ultrasound contrast agents are tiny, gas-filled microbubbles that are highly
reflective. Injected into the blood stream using a simple intravenous line, microbubbles
are then able to travel into the smallest capillary networks.
When clinicians expose these agents to the ultrasound pulse, they return signals that
are thousands of times more reflective than blood. Ensemble Contrast Imaging allows the
SONOLINE® Elegra ultrasound system to isolate these reflective signals to
obtain rare views of flow within small vessels and surrounding parenchyma.
In the later phases of Contrast Imaging, the "Burst Mode" breaks the
microbubbles, creating a strong enhancement in areas where there is a high concentration
of contrast agent in the blood. Therefore, areas of normal perfused tissue light up.
Abnormal, diseased tissue does not. This makes it easier to distinguish lesions.
Ensemble Contrast Imaging technology can be used with both high and low frequency
imaging. This technology, together with Tissue Harmonic Imaging is a function of Siemens
Ensemble Harmonic Imaging, a phase-inversion imaging technique that produces clearer
images in all patients, even those who are difficult to scan.
The highly reflective bubbles, present in
ultrasound contrast agents, vibrate strongly at harmonic frequencies. Improved detection
of echoes from slow, low velocity blood flow lasts 1-60 minutes. This source of sound is
distinguishable from tissue with harmonic imaging.

Ensemble Contrast Imaging, together
with 3-Scape Real-Time 3D Imaging, demonstrate the relationship of a liver
hemangioma to the hepatic vasculature.
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| The above information is destined for professional use in
the medical and medical technology fields. Product availability is subject to, among
others, local regulatory requirements. [© Siemens
Medical Systems, Inc., Ultrasound Group, 1998, 1999.] |
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