Performance evaluation of an XRII-based volume CT scanner

David W. Holdsworth; Maria Drangova; Aaron Fenster

doi:10.1117/12.154583

14 September 1993 Performance evaluation of an XRII-based volume CT scanner

David W. Holdsworth, Maria Drangova, Aaron Fenster

Proceedings Volume 1896, Medical Imaging 1993: Physics of Medical Imaging; (1993) https://doi.org/10.1117/12.154583
Event: Medical Imaging 1993, 1993, Newport Beach, CA, United States

Abstract

A laboratory quantitative CT scanner capable of producing high-resolution images in all three dimensions has been developed. The system uses an x-ray image intensifier (XRII), optically coupled to a time-delay integration (TDI) CCD to obtain low-noise, high-resolution projections from many angles around a rotating sample. The scanner operates in two modes, producing either a single, transverse image through the sample or a three-dimensional image of the sample volume, over a field-of-view (FOV) ranging from 4 to 12 cm. The performance of this quantitative CT system has been characterized with respect to accuracy, precision, and spatial resolution. The average accuracy in attenuation measurements was +/- 0.01 cm^-1 (RMS). Measurement precision varied with voxel size and x-ray exposure, from +/- 0.01 cm^-1 to +/- 0.03 cm^-1. Limiting spatial resolution also varied with scanner FOV, ranging from 2.8 mm^-1 to 1.2 mm^-1 for the 4 and 12 cm FOVs, respectively. Applications of the volume CT scanner in research tasks using live animals and in vitro preparations are discussed.

Citation Download Citation

David W. Holdsworth, Maria Drangova, and Aaron Fenster "Performance evaluation of an XRII-based volume CT scanner", Proc. SPIE 1896, Medical Imaging 1993: Physics of Medical Imaging, (14 September 1993); https://doi.org/10.1117/12.154583

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available