Abstract: A system includes a device associated with an endoscopy guided procedure including a housing defining a housing channel with at least a portion of the housing configured for deployment within a cavity. The device further includes a plurality of bodies defining respective channels defined within the housing. The housing defines a longitudinal axis, and the plurality of channels extends throughout the housing around the longitudinal axis. Each of the plurality of channels accommodates selective activation of radiation emittance from a predetermined different position along the housing via one or more radiation elements such that the plurality of channels collectively provides a predetermined spatial distribution of a radiation treatment to a target area along the cavity.

Abstract: Provided herein are architectural coating compositions having sound-reducing properties. The coating compositions comprise a high-density pigment component. Preferably, the high-density pigment component has a density of at least about 3 grams/cm3. In one embodiment, the high-density pigment component comprises barium sulfate.