| 摘要 |
PURPOSE:To always take the photograph of an object to be examined with the optimum quantity of beam, by controlling a quantity-of-beam controller according to the quantity-of-beam table stored in a quantity-of-beam table memory part. CONSTITUTION:Prior to the photographing in this examination, an X-ray condition is lowered as compared wit that at the time of said photographing to perform test photographing and the change characteristic of the quantity of the beam from an X-ray tube bulb at every projection position is calculated to a preliminarily form a quantity-of-beam table which is, in turn, stored in a quantity-of-beam memory part 14. At the time of the photographing of an object 2 to be examined in this examination, a quantity-of-beam controller 15 is controlled according to the quantity-of-beam table stored in the quantity-of- beam table memory part 14 at each time when the X-ray tube bulb 1 moves to each projection position to control the quantity of the beam incident to a television camera 4.
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