x-rays can pass through some parts of the body
x_raying is not medical_imaging. upper_respiratory_tract is body_part. human_heart is body_part. lymph_node is body_part. lymph_node is internal_body_part. x_raying is diagnostic_medical_procedure. x_raying is not diagnostic_medical_procedure. traversing_tunnel is passing_through. x_raying is medical_imaging. leaving is passing_through.