Patent ID: 7647189
Filing Date: 2010-01-12
Classification: G01N

Abstract:
1. A method for inspection of a liquid article to determine a presence of drugs concealed in said liquid article, comprising the steps of: emitting radiation beams having a single energy and transmitting said single energy beams through the liquid article; receiving, at a detection and collection apparatus, the single-energy radiation beams transmitted through the liquid article to get multi-angle projection data; inversely operating the multi-angle projection data based on uniformity of the liquid article, using a computer data processor, to obtain a calculated attribute value of the liquid article under inspection; retrieving, by the computer data processor, a reference attribute value in a pre-created database by using the identification information of the liquid article as an index, and calculating a difference between the calculated attribute value and the reference attribute value; determining whether the difference is larger than a predefined threshold value to obtain a result; and outputting the result to a user to indicate that there are drugs concealed in the liquid article when the difference is determined to be larger than the predefined threshold value.