Abstract: Compositions and methods used in the non-invasive detection and/or treatment of hypoxic tissues in vivo are described. Compositions including microbubbles functionalized with one or more hypoxia targeting agents and one or more therapeutic compounds, methods of preparing the functionalized microbubbles, and methods of using the functionalized microbubbles for diagnostic and/or therapeutic applications are described, including a method for selectively determining the amount of vascular hypoxia occurring in a tissue.

Abstract: A wireless communications network which provides directed transmissions between components of the network is provided. The components within the wireless communications include a master apparatus, a plurality of remote devices, and a plurality of repeaters. The components within the wireless communications network communicate using messages which have a control field and at least one information field. Information within the control field is used by components to make determinations for retransmitting the message, or transmitting a predefined response to the message, such as a signal strength response. The components within the network use the messages to make a determination of a communications target, which may be used as a primary contact for transmitting information, automatically, and may repeat the determination at predetermined intervals.

Abstract: A wireless communications network which provides directed transmissions between components of the network is provided. The components within the wireless communications include a master apparatus, a plurality of remote devices, and a plurality of repeaters. The components within the wireless communications network communicate using messages which have a control field and at least one information field. Information within the control field is used by components to make determinations for retransmitting the message, or transmitting a predefined response to the message, such as a signal strength response. The components within the network use the messages to make a determination of a communications target, which may be used as a primary contact for transmitting information, automatically, and may repeat the determination at predetermined intervals.

Abstract: A wireless communications network which provides directed transmissions between components of the network is provided. The components within the wireless communications include a master apparatus, a plurality of remote devices, and a plurality of repeaters. The components within the wireless communications network communicate using messages which have a control field and at least one information field. Information within the control field is used by components to make determinations for retransmitting the message, or transmitting a predefined response to the message, such as a signal strength response. The components within the network use the messages to make a determination of a communications target, which may be used as a primary contact for transmitting information, automatically, and may repeat the determination at predetermined intervals.

Abstract: A wireless communications network which provides directed transmissions between components of the network is provided. The components within the wireless communications include a master apparatus, a plurality of remote devices, and a plurality of repeaters. The components within the wireless communications network communicate using messages which have a control field and at least one information field. Information within the control field is used by components to make determinations for retransmitting the message, or transmitting a predefined response to the message, such as a signal strength response. The components within the network use the messages to make a determination of a communications target, which may be used as a primary contact for transmitting information, automatically, and may repeat the determination at predetermined intervals.