Patent ID: 7424090

Claim:
A radiographic imaging system comprising: a single-slice CT detector having a single detector row and configured to detect radiation emitted by a radiation source and attenuated by a subject to be imaged; a dynamic slice-width collimator disposed between the radiation source and the single-slice CT detector and configured to collimate a radiation beam at a first position and a second position, wherein a total flux passed through the dynamic slice-width collimator at the first position is lower than a total flux passed through the dynamic slice-width collimator at the second position; a data acquisition system (DAS) configured to acquire non-saturated data from the single-slice CT detector with the dynamic slice-width collimator disposed at the first position, and configured to acquire imaging data with the dynamic slice-width collimator disposed at the second position; and a computer programmed to correct data received with the dynamic slice-width collimator at the second position using data received with the dynamic slice-width collimator at the first position.