METHOD AND SYSTEM FOR OBTAINING IMPROVED COMPUTED TOMOGRAPHIC RECONSTRUCTIONS

摘要

Methods and systems for obtaining improved computed tomographic reconstructions are provided. A camera obtains one or more images of a patient while a tomographic scan is performed. A CT scanner obtains one or more tomographic projections. The total number of the one or more tomographic projections obtained during the CT scan is determined. For each of the one or more patient images obtained, a processor correlates the patient image with the one or more tomographic projections, calculates a position of the patient and determines if the calculated position of the patient is greater than one or more predetermined constants. If it is determined that the calculated position of the patient is greater than one or more predetermined constants and a total number of the one or more tomographic projections obtained is less than a predetermined number, separate projections are substituted in the place of the one or more tomographic projections that were correlated to the patient image. If it is determined that the calculated position of the patient is greater than one or more predetermined constants and a total number of the one or more tomographic projections is greater than a predetermined number, the tomographic scan is aborted or the tomographic reconstruction is reconstructed on a reduced arc.