Abstract: A reactor is provided with a coil including a pair of winding portions arranged in parallel, a magnetic core to be arranged inside and outside the winding portions, a case for accommodating an assembly including the coil and the magnetic core, a leaf spring fitting for pressing the assembly toward an inner bottom surface of the case, and a sealing resin portion to be filled into the case. Each of the winding portions is so arranged that an arrangement direction of the winding portions is along a depth direction of the case. The case includes an opening having a rectangular planar shape. The leaf spring fitting is arranged in a state curved toward the inner bottom surface by having both end parts of the leaf spring fitting directly pressed against parts of inner wall surfaces of the case facing each other in a long side direction.

Abstract: A local cerebral blood flow measuring apparatus includes an expiratory tube arranged along a slice within a photography area of a gantry, and a sensor for detecting end of expiration. The expiratory tube includes a chamber for storing only an end tidal air, in synchronism with the end of expiration detected by the sensor. The end tidal air storage chamber and a subject to be examined are scanned with X-rays from the gantry, in synchronism with the end tidal air. The tracer concentration of the end tidal air storage chamber is measured by means of data derived from the gantry.

Abstract: In a CT imaging apparatus, tracer gas such as Xenon is drawn via a pipe into a patient in synchronism with X-ray tomographic data acquisition. The tracer gas inhalation is controlled by a data acquisition controller through a valve driver. The tracer gas concentrations in the local cerebral tissue and air expired from the patient are measured in the image analysis device. The first-mentioned tracer gas concentration is measured before its saturation in the patient. The partition coefficients of the local cerebral portions are calculated in the calculation device from the ratio of the first area to the second area. The first area is defined by the first curve representing the tracer gas concentration of the local cerebral tissue, while the second area is defined by the second curve representing the tracer gas concentration of the air expired by the patient.