Patent ID: 7424094

Claim:
A γ radiation imaging system for nondestructive inspection of a luggage, comprises a DR subsystem for obtaining a projection picture of the luggage by line scanning, and a CT subsystem for obtaining a tomographic image of the luggage by rotary scanning, wherein The DR subsystem including: a stationary frame, a conveying mechanism, and a radiation source, a front collimator and a rear collimator, and an array detector, which are fixed onto the stationary frame, the CT subsystem including: a rotary frame, a conveying mechanism, and, a radiation source, a front collimator and a rear collimator, and an array detector, which are fixed onto the rotary frame, characterized in that, the radiation source of the CT subsystem is a γ-ray source of 192 Ir or 75 Se radioactive isotope with a high specific activity, the γ-ray source is enclosed in a shielding chamber with a projecting shutter, the shielding chamber being fixed onto the rotary frame, the array detector is suitable for detecting γ rays of 192 Ir or 75 Se radioactive isotope, The radiation source of DR subsystem is a γ-ray source of 192 Ir or 75 Se radioactive isotope with a high specific activity, the γ-ray source is enclosed in a shielding chamber with a projecting shutter, the shielding chamber being fixed onto the stationary frame, the array detector is suitable for detecting γ rays of 192 Ir or 75 Se radioactive isotope.