Patent ID: 9429530
Filing Date: 2016-08-30
CPC Classification: G01N,G01V

Claim Text:
1. A scanning method for scanning an object comprising: providing a first detector region having a thickness of at least 2 mm and a second detector region having a thickness of at least 5 mm wherein the second detector region is arranged to receive radiation that has passed through the first detector region; irradiating the object with a first high energy radiation profile; detecting the first high energy profile radiation after it has interacted with or passed through the object in order to provide information relating to the object, wherein detecting the first high energy profile radiation comprises: irradiating the object with a second low energy radiation profile detecting the second low energy profile radiation after it has interacted with or passed through the object in order to provide information relating to the object, wherein detecting the second low energy profile radiation comprises: wherein the first detector region is positioned between the object and the second detector region; and calculating a ratio, (A/B)