Used in more than 800 medical sites throughout the US, Optison can enhance left ventricle image quality by creating an echogenic contrast effect in the blood. Optison was the first UEA using a gas other than air introduced to the US market in 1998.

PRODUCT INDICATIONS: Optison is an ultrasound contrast agent indicated for use in patients with suboptimal echocardiograms to opacify the left ventricle and to improve the delineation of the left ventricular endocardial borders. CONTRAINDICATIONS: Do not administer Optison to patients with known or suspected hypersensitivity to perflutren or ...

2024年12月5日 · Optison is an ultrasound contrast agent that is used to improve the quality of an echocardiogram (ultrasound of the heart). This medicine works by changing the way ultrasound waves travel within your heart. This helps the ultrasound portray a sharper image of your heart.

2024年1月14日 · OPTISON (perflutren protein-type A microspheres) injectable suspension is an ultrasound contrast agent for intravenous injection. The vial contains a clear liquid lower layer, a white liquid upper layer, and a headspace filled with perflutren gas.

contrast agents (ECAs) were developed. ECAs were first approved in 1990, and there are currently 3 commercially available second-generation ECAs in the United States, including Optison (perflutren protein-type A microspheres; GE Healthcare, Buckinghamshire, UK), Definity (perflutren lipid microsphere; Lantheus Medical Imaging, Billerica,

Optimum contrast is created by selecting the correct retardation and attenuation values, which is a function of the optical properties of the phase ring in the objective aperture. A major artifact of phase contrast imaging is the bright halos of light that appear on …

2016年2月27日 · Subject contrast refers to the absorption characteristics of the anatomic tissue radiographed along with the quality of the x-ray beam. Differences in tissue thickness, density, and effective atomic number contribute to subject contrast.

During a period of 4.5 +/- 2.4 years, a total of 66,164 doses of Definity (Lantheus Medical Imaging, North Billerica, MA) and 12,219 doses of Optison (GE Healthcare, Buckinghamshire, UK) were administered, reflecting contrast use in 5% of transthoracic and 28% of stress echocardiographic procedures.

Contrast material–enhanced computed tomography (CT) is the most commonly used imaging modality for the detection of hypervascular hepatic tumors such as hepatocellular carcinoma. [1–5] For this application, it is crucial to achieve maximum hepatic enhancement to improve tumor-to-liver contrast on images.

2012年12月4日 · In this review, we discuss basic design considerations for targeted contrast agents in terms of optical and physicochemical properties, biological and physiological interactions, and biodistribution and targeting. Key Words: Near-infrared imaging, optical imaging, targeted contrast agent, biodistribution.