Partial-Data Interpolation Method for Arc Handling in a Computed Tomography ScannerComputerized Medical Imaging and Graphics
AbstractX-ray tube arcing in computed tomography scanners causes poor image quality. During the time that the X-ray tube recovers to full voltage after an arc, image data is being collected. Normally this data, acquired at less than full voltage, is discarded and interpolation is performed over the arc duration. We have developed an algorithm that corrects for improper tube voltage, allowing previously discarded data to be used for imaging. The use of voltage corrected data provides improved image quality compared to simple interpolation methods. This improvement is relevant today as the imaging field uses faster scanners with shorter sampling times.
Publisher's StatementNOTICE: this is the author’s version of a work that was accepted for publication in Computerized Medical Imaging and Graphics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computerized Medical Imaging and Graphics, 35, 5, (07-01-2012); 10.1016/j.compmedimag.2012.04.004
Citation InformationJaisingh Rajwade, Lester Miller, Dan Simon. (2012) Partial-data interpolation method for arc handling in a computed tomography scanner. Computerized Medical Imaging and Graphics, 36(5), 387-395. doi: 10.1016/j.compmedimag.2012.04.004