Method and device for inspection of liquid articles

A method of inspecting a liquid article comprising:

• performing a DR imaging on the liquid article to generate a transmission image;
• determining from the transmission image at least one positions at which CT scan is to be performed;
• performing dual-energy CT scan at the determined positions to generate CT image data;
• comparing at least one physical attribute values contained in the CT image data with the respective reference physical attribute values preset in a database, wherein the physical attribute values comprises at least one of atomic number and density;
• and
• outputting information indicative of that the liquid article conceals drug if the comparison results satisfy a predetermined condition.

An apparatus of inspecting a liquid article comprising:

• a radiation source adapted to emit radiation beams;
• a detection and acquisition device adapted to detect and acquire radiation signals transmitted through the liquid article;
• a controller adapted to control the detection and acquisition device to perform DR imaging on the liquid article to generate a transmission image, and perform CT imaging on the liquid article at least one positions to generate CT image data;
• a computer adapted to compare at least one physical attribute values contained in the CT image data with respective reference physical attribute values preset in a database, and output information indicative of that the liquid article conceals drug if the comparison results satisfy a predetermined condition, wherein the physical attribute values comprises at least one of atomic number and density,
• wherein the computer is further adapted to send to the controller a signal to indicate the position at which the CT scan is performed.

A method of inspecting a plurality of liquid articles, comprising:

• placing a barrel which is divided into a plurality of sub-spaces on a carrying stage, wherein the plurality of liquid articles are disposed in the respective sub-spaces, and at least one specific mark is provided for the barrel;
• performing a CT scan on the liquid article at least one positions to generate CT image data;
• determining whether one or more liquid article conceals drug based on the CT image data;
• analyzing the CT image data to determine the location of the specific mark in the CT image;
• and
• determining locations of the one or more liquid articles in the barrel in accordance with the locations of the liquid articles relative to the specific mark in the CT image.

A method of inspecting a plurality of liquid articles, comprising:

• placing a plurality of liquid articles in the respective regions of the carrying stage, wherein the regions can be visually distinguished from each other;
• performing CT scan on the liquid articles at least one positions to determine whether at least one of the plurality of the liquid articles conceals drug;
• and
• associating the liquid article concealing drug with the respective region on the carrying stage.

A method of inspecting a plurality of liquid articles, comprising:

• placing a plurality of liquid articles on a carrying stage;
• performing CT scan on the liquid articles at a plurality of positions in the vertical direction of the liquid articles to generate CT images;
• after each CT scan, rotating the CT image of the liquid articles to be aligned with each other and to be aligned with the final position of the liquid articles on the carrying stage;
• analyzing CT images to determine whether at least one liquid article conceals drug;
• and
• displaying the CT image of the liquid article concealing drug in a visually distinguishable manner.

A method of inspecting a liquid article, comprising:

• retrieving position information of the liquid portion in accordance with the information acquired from outside of the liquid article;
• placing the liquid article on a carrying stage;
• determining the positions at which CT scan are to be performed based on the position information;
• performing CT scan on the liquid article at the positions to obtain CT image data;
• and
• analyzing the CT image data to determine whether the liquid article conceals drug.