| 摘要 |
PROBLEM TO BE SOLVED: To obtain contrast chips enabling X-ray check to be conducted stably over a long period. SOLUTION: The contrast chips comprise 50-90 pts.wt. of a silicone rubber and 10-50 pts.wt. of bismuth oxide, being in the form of granules. Thus, the chips do not diffuse within the internal organs in contrast the case with using liquid contrast media, therefore enabling X-ray check to be conducted stably over a long period.
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