A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The three-dimensional positional information may include global positioning system coordinates, an Internet Protocol address, cellular network information, or any other type of three-dimensional positional information. Seeds are generated from the segmented image and then used to grow the region. A conducting wire that runs in the same direction as the at least one serpentine antenna element is used to match impedance and enhance antenna performance and power flow between the antenna and the IC. The method further comprises the step of operating the at least two light sources such that the color coordinates of the light emitted from the at least two light sources are maintained over time within a first, bounded interval, and the luminous intensity of the light emitted from the at least two light sources is maintained over time within a second, bounded interval. The thus configured endoscopic overtube of the present invention can hold the ultrasound transmission medium, excel in placing the ultrasound transmission medium, and smoothly supply the ultrasound transmission medium into the treatment instrument insertion passage.