Abstract
Background: Since the internal structure of a tablet can be measured without destruction of the sample by X‐ray computed tomography (CT), it could be applied to quality control of tablets during the manufacturing process. Aim: A novel, fast, noninvasive tablet observation method was developed to evaluate the internal structure of commercial press-coated tablets by using X-ray CT. Method: Thirty-two CT image slices of four kinds of commercial press-coated tablets (tablets A, B, C, and D) were measured 300 m interval between edges of the tablet by using an X-ray CT. The thinnest layer thickness of the tablets and distance between centers of gravity (DCG) of tables were calculated. Results: The order of the TLT of the tablets was tablet B > tablet C > tablet D > tablet A. The result indicated that the order of DCG was tablet A > tablet D > tablet C > tablet B. Noninvasive observation of the internal structure of commercial, press-coated tablets by X-ray CT has been demonstrated to be useful in quality control of production. Conclusion: The internal structure of press-coated tablets could be observed without pretreatment, without destruction, and very rapidly by X‐ray CT.
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