The invention discloses a method of treating a patient for pleural effusion comprising percutaneously delivering an adhesive material to a pleural space of the patient. The frequency characteristics calculating unit performs fast Fourier transform on the received signal according to the initial symbol timing signal, extracts the pilot data sequence from the received signal, and calculates frequency characteristics of a channel between the receiver and a transmitter that has transmitted the received signal. The event data recorder is configured to store the resulting data and to allow the stored data to be retrieved in response to an inquiry. The spool is provided at one end thereof with a land portion whose end surface defines a part of the intermediate fluid chamber. Thus the user can easily understand the relationship between the information and the position to which the information is added. A lens disposed near the moving belt and above the reservoir is coupled by fiber optics to a remote sensor amplifier for detecting the height of the slurry.