A high-frequency module is connected to a transmitting circuit, a receiving circuit and an antenna to control the connections between the transmitting circuit and the antenna and between the receiving circuit and the antenna. The hydraulic motors each include an inlet side and an outlet side. The conductive layer may be a silicon layer, a layer of indium andor tin oxide, or may be a stack having an indium andor tin oxide layer over a silicon layer. The awl is comprised of a tapered awl or drill tip in combination with a solid core surrounded by a solenoid. The invention provides a planning technique that translates traditional static fixed-field IMRT plans into deliverable IMAT plans and allows IMAT to be realized as a routine clinical delivery technique. The insulating covering includes a vinyl chloride-based resin composition with a brittle temperature from \u221240\xb0 Celsius to \u221225\xb0 Celsius, a hardness D from 35 to 55, and heating deformation of 10% or below.