Patent ID: 9380984
Filing Date: 2016-07-05
CPC Classification: A61B,G06T

Claim Text:
1. A method of CT imaging a region of interest of an object under examination, comprising: acquiring first CT projection data of the region of interest, wherein the region of interest is located within an object support with respect to the object, wherein the region of interest does not abut a perimeter of the object support, wherein the first CT projection data is acquired through a first CT scan, and wherein during the first CT scan the region of interest is adjusted into a scanning field of view such that an X-ray beam of the first CT scan only covers the region of interest; acquiring second CT projection data of region B, wherein at least a part of the region B is located outside the object support, and wherein the region B is separate from the region of interest and the region B is selected to enable the selection of a group of PI line segments covering the region of interest, and each PI line segment passing through the region of interest passes through the region B, wherein the second CT projection data is acquired through a second CT scan, and wherein during the second CT scan region B is adjusted into the scanning field of view such that an X-ray beam of the second CT scan only covers the region B; and reconstructing the CT image of the region of interest based on the first CT projection data of the region of interest acquired in the first CT scan and the second CT projection data of the region B acquired in the second CT scan.