Development of a technique for electronic assessment of the image quality of medical fluoroscopic systems

Henry Weatherburn; G. Manson

doi:10.1117/12.174252

1 May 1994 Development of a technique for electronic assessment of the image quality of medical fluoroscopic systems

Henry Weatherburn, G. Manson

Proceedings Volume 2163, Medical Imaging 1994: Physics of Medical Imaging; (1994) https://doi.org/10.1117/12.174252
Event: Medical Imaging 1994, 1994, Newport Beach, CA, United States

Abstract

While methods of testing fluroscopic systems are well established, using test objects such as the Leeds test objects, observer influence may affect the results and the process is relatively time consuming. An alternative approach is examined, whereby use of a line selector and oscilloscope are used with a test object to examine resolution, contrast and grey scale steps. Three radiotherapy simulator fluoroscopic imaging systems are tested and, in each case, observed images are found to be limited by the signal response, as present in the video signal, and not by monitor performance. Edge enhancement effects and signal droop are also found to be effects which merit further investigation. It appears that, at low cost, the use of an oscilloscope and a TV line selector may permit the development of quantitative methods for assessing the performance of imaging systems.

Citation Download Citation

Henry Weatherburn and G. Manson "Development of a technique for electronic assessment of the image quality of medical fluoroscopic systems", Proc. SPIE 2163, Medical Imaging 1994: Physics of Medical Imaging, (1 May 1994); https://doi.org/10.1117/12.174252

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