Quality assurance for CT and MRI scanners

Alan H. Rowberg; David R. Haynor; Michael Denny; Marv Kleven; David J. Goodenough

doi:10.1117/12.208375

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8 May 1995 Quality assurance for CT and MRI scanners

Alan H. Rowberg, David R. Haynor, Michael Denny, Marv Kleven, David J. Goodenough

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Proceedings Volume 2432, Medical Imaging 1995: Physics of Medical Imaging; (1995) https://doi.org/10.1117/12.208375
Event: Medical Imaging 1995, 1995, San Diego, CA, United States

Abstract

While specialized phantoms for quality assurance have been provided with CT scanners since these devices were first marketed to radiology departments, there has been little in the way of integrated software and procedures to use these phantoms on an on-going basis. Typically, they are used initially when the scanner is installed, and then used only very intermittently thereafter, usually by the vendors' service personnel. Although calibration scans are performed routinely, these typically only establish the baseline for the accuracy and uniformity of CT numbers, and do not actually measure the resolution which the images are capable of achieving. Over the last four years, a software package to automatically analyze images from CT scanners has been developed, and this was adapted to use with MRI scanners in 1993. An additional software package has been developed to handle the results of the individual quality assurance scans in a data base, and allow for easy analysis and graphing of the results.

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Alan H. Rowberg, David R. Haynor, Michael Denny, Marv Kleven, and David J. Goodenough "Quality assurance for CT and MRI scanners", Proc. SPIE 2432, Medical Imaging 1995: Physics of Medical Imaging, (8 May 1995); https://doi.org/10.1117/12.208375

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