High-resolution dynamic CT scanner based on a variable-zoom XRII and a linear photodiode array

Maria Drangova; David W. Holdsworth; Aaron Fenster

doi:10.1117/12.154584

14 September 1993 High-resolution dynamic CT scanner based on a variable-zoom XRII and a linear photodiode array

Maria Drangova, David W. Holdsworth, Aaron Fenster

Proceedings Volume 1896, Medical Imaging 1993: Physics of Medical Imaging; (1993) https://doi.org/10.1117/12.154584
Event: Medical Imaging 1993, 1993, Newport Beach, CA, United States

Abstract

We have developed a CT scanner with high temporal and spatial resolution which can be used to acquire dynamic images of objects undergoing periodic motion. Our system comprises of an x-ray image intensifier (XRII) optically coupled to a linear photo-diode array (PDA) camera. The XRII has been modified to vary electronically the magnification of the image continuously over fields-of-view (FOV) ranging between 8 and 24 cm, and thus increasing the resolution from 1.4 mm^-1 to 3.8 mm^-1. In this way, we can select a magnification which maximizes the image resolution for a given object.

Citation Download Citation

Maria Drangova, David W. Holdsworth, and Aaron Fenster "High-resolution dynamic CT scanner based on a variable-zoom XRII and a linear photodiode array", Proc. SPIE 1896, Medical Imaging 1993: Physics of Medical Imaging, (14 September 1993); https://doi.org/10.1117/12.154584

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