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Proceedings Paper

Flat-panel-detector-based volume tomographic angiography imaging: detector evaluation
Author(s): Ruola Ning; Dinghua Zhang; Biao Chen; David L. Conover; Rongfeng Yu
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Paper Abstract

Recent development of large area flat panel solid state detector arrays indicates that flat panel image sensors have some common potential advantages: compactness, absence of geometric distortion and veiling glare with the benefits of high resolution, high DQE, high frame rate and high dynamic range, small image lag (less than 1%) and excellent linearity (approximately 1%). The advantages of the new flat-panel detector make it a promising candidate for cone beam volume tomographic angiography imaging. The purpose of this study is to characterize a Selenium thin film transistor (STFT) flat panel detector-based imaging system for cone beam volume tomographic angiography imaging applications. A prototype STFT detector-based cone beam volume tomographic angiography imaging system has been designed and constructed based on the modification of a GE 8800 CT scanner. This system is evaluated using a vascular phantom with different x-ray spectra, different sizes of vessels and different iodine concentration levels. The results indicate that with the currently available STFT flat panel detector, 90 kVp is the optimal kVp to achieve the highest signal-to-noise ratio for volume tomographic angiography imaging and the low contrast resolution of the system is 4 mg/ml iodine for a 2 mm vessel.

Paper Details

Date Published: 22 September 1999
PDF: 12 pages
Proc. SPIE 3772, Developments in X-Ray Tomography II, (22 September 1999);
Show Author Affiliations
Ruola Ning, Univ. of Rochester (United States)
Dinghua Zhang, Univ. of Rochester (United States)
Biao Chen, Univ. of Rochester (United States)
David L. Conover, Univ. of Rochester (United States)
Rongfeng Yu, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 3772:
Developments in X-Ray Tomography II
Ulrich Bonse, Editor(s)

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