Abstract: A purpose of the present invention is to make it possible, when diagnosing bone marrow edema, to estimate whether bone marrow edema is present in a body part of a subject without using MRI testing using a high-cost MRI device. The present invention is an estimation device that includes a learner that is trained using X-ray images in which the body part is photographed, and learning data including information about whether the body part photographed in the X-ray image has bone marrow edema, the X-ray image in which the body part of the subject is photographed being inputted into the learner, and an estimation result being outputted that relates to the presence of bone marrow edema in the body part photographed in the inputted X-ray image.

Abstract: A production line for assembling a pair of left and right car components, capable of assembling a pair of high quality car components by on line at high operating efficiency and productivity and capable of controlling jigs and molds with high dimensional accuracy. The production line of this invention related to a production line for assembling a pair of left and right front doors for supply to an assembly line of the white body of a car, is constructed by arranging various processes on one line, which comprises a work tack welding process A comprising a work input device 3 for alternately inputting the left right front door panels LDP and RDP, an incremental welding process B for welding either one of the works while transferring the other, a marriage process C, a door skin input and sealing process D, a hemming process E, a hemming delivery process F, and a front door delivery portion.