PURPOSE: To obtain good radiographic videos by holding a halation preventing body in tight contact with or at a small spacing from an object to be inspected.
CONSTITUTION: A halation preventing body 13 is installed at a spacing smaller than several millimeters from the inside surface part of an object 11 to be inspected having a through-hole 11a in, for example, a central part, facing an X-ray generator 12. Said body 13 is constituted of a holding plate 13-1 made of FRP, a contour shielding plate 13-2 formed of, for example, lead, etc., and a wall thickness correcting plate 13-3 formed of lead, etc. correcting the wall thickness of the object 11. The X-rays radiated from the X-ray generator transmit through a base plate 14-1 of aluminum, etc., pass through the body 13 and are made incident to the object 11. The X-rays incident to the plate 13-3 are adjusted of the intensity of the X-rays according to the wall thickness of the object 11 there, and enter the object 11 by passing through a slight clearance; therefore the X-rays transmit through the inside of the object 11 without receiving the influence of scattering rays. Thus the X-rays incident to an X-ray image system 15 have equal dose.
IMAZAKI MASANORI
TANIMOTO YOSHITETSU
HINAGA KOUJI
TOKYO SHIBAURA ELECTRIC CO
| JP41020160A |