Acoustically responsive stabilized microbubbles formulated with a phospholipid monolayer shell, an encapsulated bioactive gas, and an encapsulated perfluorocarbon gas of the formula C.sub.xF.sub.y in a volume ratio of from about 10:1 to about 1:10, wherein X is greater than or equal to 3, are disclosed. Also provided are methods for promoting localized vasodilation in a patient in need thereof by delivering a microbubble comprising a phospholipid monolayer shell and an encapsulated bioactive gas locally to a target diseased section of the patient's vasculature; and releasing the bioactive gas at the target diseased section, wherein the microbubble comprises the bioactive gas in a ratio of from about 10:1 to about 1:10 by volume with a perfluorocarbon gas.

Single layer and multilayer vesicles with actives inside are delivered into living tissue. Then, the vesicles are disrupted using ultrasound. The vesicles are used to create an image in the tissue or for the delivery of certain actives to the skin.

The application relates to liposomal nanovesicles comprising porphyrin-lipid conjugates within the liposomal lipid bilayer. Said porphyrin-lipid conjugate comprise porphyrins that are modified with a CH(R.sup.1)OR.sup.2 group and that chelate a metal ion. Such modifications of the porphyrin allow for ordered assembly in the lipid bilayer of the nanovesicles while resulting in a bathochromic shift in the wavelength of light absorbed by the porphyrin chromophore. These nanovesicles can be used for photothermal therapy, photodynamic therapy, photoacoustic imaging and fluorescence imaging. The application also teaches methods for preparing the porphyrin-lipid conjugates and the nanovesicles.

A PSMA targeted nanobubble includes a membrane that defines at least one internal void, which includes at least one gas, and at least one PSMA ligand coupled or conjugated to the membrane. The membrane includes at least one lipid and at least one nonionic triblock copolymer that is effective to control the size of the nanobubble without compromising in vitro and in vivo echogenicity of the nanobubble.

The present technology provides compositions and nanoemulsions useful in optoacoustic imaging. A composition of the present technology includes at least one contrast agent covalently linked to a targeting agent; where the at least one contrast agent includes a dark quencher; the targeting agent includes an antibody, an antigen, an antigen-targeting ligand, a receptor ligand, or an adhesion peptide; and the at least one contrast agent and targeting agent are covalently linked by a linker of formula (I) X.sup.1-L.sup.1-X.sup.2 (I) where X1 is an amino, amide, S, or O of the at least one contrast agent; L.sup.1 is C.sub.1-C.sub.12 alkylene, C.sub.2-C.sub.12 alkenylene, C.sub.5-C.sub.12 cycloalkylene, or C.sub.6-C.sub.12 arylene; and X.sup.2 is an amino, amide, S, or O of the targeting agent.

Provided herein are improved methods for preparing phospholipid formulations including phospholipid UCA formulations.

The present subject matter provides compounds, compositions, and methods for identifying, monitoring, treating, and removing diseased tissue. Compounds, compositions, and methods for identifying, monitoring, and detecting circulating fluids such as blood are also provided.

The present subject matter provides compounds, compositions, and methods for identifying, monitoring, treating, and removing diseased tissue. Compounds, compositions, and methods for identifying, monitoring, and detecting circulating fluids such as blood are also provided.

We disclose a composition comprising an echogenic liposome (ELIP) having an exterior surface, an interior surface, and at least one bilayer comprising at least one lipid selected from the group consisting of saturated phospholipids, unsaturated phospholipids, mixed phospholipids, and cholesterol, and a thrombolytic compound trapped by the ELIP. We also disclose a method of treating a medical condition in a patient characterized by a thrombus in the patient's vasculature, comprising administering to the patient the composition in an amount effective to reduce the size of the thrombus.

Provided herein are improve methods for preparing phospholipid formulations including phospholipid UCA formulations.