Patent ID: 8401144
Filing Date: 2013-03-19
Classification: A61B,G06T

Abstract:
1. A method of correcting an image of a patient containing artifacts, the method comprising: using a radiation source and a radiation detector to perform a primary circular scan, such that the primary circular scan generates a primary imaging data set; using the radiation source and the radiation detector to perform a secondary helical scan, such that the secondary helical scan generates a secondary imaging data set; and using the secondary imaging data set to correct the primary imaging data set for artifacts, and generate an image of the patient; wherein the radiation source or the radiation detector is translated axially along a z-axis during the secondary helical scan, while the patient remains substantially stationary in the z-axis direction; and wherein the radiation source applies a first radiation dosage during the primary circular scan, the radiation source applies a second radiation dosage during the secondary helical imaging scan, and the first radiation dosage is greater than the second radiation dosage.