Performance evaluation of image-intensifier-TV fluoroscopy systems

Wilhelm J.M. van der Putten; Shawn Bouley

doi:10.1117/12.208356

8 May 1995 Performance evaluation of image-intensifier-TV fluoroscopy systems

Wilhelm J.M. van der Putten, Shawn Bouley

Proceedings Volume 2432, Medical Imaging 1995: Physics of Medical Imaging; (1995) https://doi.org/10.1117/12.208356
Event: Medical Imaging 1995, 1995, San Diego, CA, United States

Abstract

Through use of a computer model and an aluminum low contrast phantom developed in-house, a method has been developed which is able to grade the imaging performance of fluoroscopy systems through use of a variable, K. This parameter was derived from Rose's model of image perception and is here used as a figure of merit to grade fluoroscopy systems. From Rose's model for an ideal system, a typical value of K for the perception of low contrast details should be between 3 and 7, assuming threshold vision by human observers. Thus, various fluoroscopy systems are graded with different values of K, with a lower value of K indicating better imaging performance of the system. A series of fluoroscopy systems have been graded where the best system produces a value in the low teens, while the poorest systems produce a value in the low twenties. Correlation with conventional image quality measurements is good and the method has the potential for automated assessment of image quality.

Citation Download Citation

Wilhelm J.M. van der Putten and Shawn Bouley "Performance evaluation of image-intensifier-TV fluoroscopy systems", Proc. SPIE 2432, Medical Imaging 1995: Physics of Medical Imaging, (8 May 1995); https://doi.org/10.1117/12.208356

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