A method of progressive analysis for assessment of occluded data is disclosed. The common mode impedance measured at either the first or second differential IO port is zero. The matching circuit is configured to operate as a phase shifter and to produce a substantially open circuit at an input of the second filter in a pass band of the first band-pass filter. The system incorporates radiation detectors positioned in a radial array rather than electrodes. The cast directs heat from the core to the shield and cooling fluid is directed through the tubing to cool the shield. In this semiconductor module, by projections serving as a pair of attachments 42, 42 formed in the vicinity of the center area in a longitudinal direction of the circuit board 11, the radiator plates 12a, 12b are located at predetermined positions.