Medical Ultrasound Imaging
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Searchterm 'Perfusion Imaging' found in 20 articles
5 definitions [
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Lantheus Medical Imaging
www.lantheus.com Lantheus Medical Imaging, Inc. engages in discovering, developing, and marketing medical imaging agents. Lantheus Medical Imaging has headquarters in North Billerica, Massachusetts, and offices in Puerto Rico, Canada, and Australia. During its history, the company launched the products Cardiolite (Technetium Tc99m Sestamibi Preparation Kit), which has become the gold standard for use in myocardial perfusion imaging, and Definity (perflutren lipid microsphere) for use in suboptimal echocardiograms.
From 2001 to 2008 Lantheus was part of the Bristol-Myers Squibb Medical Imaging, Inc. group.

Ultrasound Contrast Agents:
Contact Information
MAIL
Lantheus Medical Imaging
Bldg. 200-2
331 Treble Cove Rd.
N. Billerica, MA 01862
USA
MRX 115
MRX 115 is a liposome based microbubble formulation and has been demonstrated as effective for cardiac blood pool imaging, Doppler enhancement and potentially myocardial perfusion imaging.
MRX 115 is based upon the demand for a stable, robust blood pool ultrasound contrast agents, also called DMP 115 or Aerosomes™ (ImaRx LLC) and now Definity®.
Myocardial Contrast Echocardiography
(MCE) Myocardial contrast echocardiography is a contrast enhanced ultrasound method that utilizes intravenous injected microbubbles as red blood cell tracers. MCE can assess myocardial perfusion both at rest and stress to evaluate viable myocardium after acute infarction.
MCE perfusion imaging improves the blood echoes during the microbubble passage and the imaging system suppresses the clutter represented by non-contrast-bearing tissue.

See also Injection Rate, Stress Echocardiogram, and Myomap.
POINT Biomedical Corp.
www.acusphere.com [This entry is marked for removal.]

'POINT Biomedical was a privately held pharmaceutical company, founded in 1996 to pursue technologies related to imaging and drug delivery. POINT's core technology was based upon an ultrasonically responsive two-layer, biodegradable microsphere or BiSphere™. One of the most important features of this technology is the ability to noninvasively trigger the BiSpheres™ to release their contents at sites within the body using externally generated pulses of ultrasound. From this basic platform, POINT was developing a pipeline of products that leverage the unique properties of the BiSphere™ technology in the areas of imaging and therapeutics. POINT has initially focused development of this platform on the assessment of tissue specific blood flow. The lead product, CARDIOsphere®, is a pharmaceutical agent that will enable cardiologists to perform myocardial perfusion imaging studies in the office setting using ultrasound rather than more expensive and cumbersome nuclear medicine (or radioisotope) techniques.'
'According to BioSpace, Tom Feldman, ex-CEO of Point BioMedical, the company's lead investor, Vendanta Capital has chosen not to follow through with the second half of its $50 million private equity financing. Point BioMedical has withdrawn the new drug application for its molecular imaging agent CARDIOsphere and is liquidating its assets to avoid a formal bankruptcy proceeding in 2008.'

Power Modulation
Power modulation is a non-linear method, based on a multi-pulse technique where the acoustic amplitude (and hence power) of the transmitted pulses is changed. Full and half amplitudes pulses are used to induce changes in the response of the contrast agent. The received echoes from the emitted half amplitude pulse are adjusted with the full amplitude pulse and this pairs of pulses are subtracted. Power modulation is used to separate contrast agent echoes at low mechanical index, allowing real-time perfusion imaging.
Power modulation can be used with a low frequency wide band transducer to increase the depth and transmit the sound beam homogenous allowing ultraharmonic imaging.
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