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Proceedings Paper

Modification of the NEMA XR21-2000 cardiac phantom for testing of imaging systems used in endovascular image guided interventions
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Paper Abstract

X-ray equipment testing using phantoms that mimic the specific human anatomy, morphology, and structure is a very important step in the research, development, and routine quality assurance for such equipment. Although the NEMA XR21 phantom exists for cardiac applications, there is no such standard phantom for neuro-, peripheral and cardiovascular angiographic applications. We have extended the application of the NEMA XR21-2000 phantom to evaluate neurovascular x-ray imaging systems by structuring it to be head-equivalent; two aluminum plates shaped to fit into the NEMA phantom geometry were added to a 15 cm thick section. Also, to enable digital subtraction angiography (DSA) testing, two replaceable central plates with a hollow slot were made so that various angiographic sections could be inserted into the phantom. We tested the new modified phantom using a flat panel C-arm unit dedicated for endovascular image-guided interventions. All NEMA XR21-2000 standard test sections were used in evaluations with the new "headequivalent" phantom. DSA and DA are able to be tested using two standard removable blocks having simulated arteries of various thickness and iodine concentrations (AAPM Report 15). The new phantom modifications have the benefits of enabling use of the standard NEMA phantom for angiography in both neuro- and cardio-vascular applications, with the convenience of needing only one versatile phantom for multiple applications. Additional benefits compared to using multiple phantoms are increased portability and lower cost.

Paper Details

Date Published: 14 March 2009
PDF: 9 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72584R (14 March 2009); doi: 10.1117/12.813533
Show Author Affiliations
C. N. Ionita, Toshiba Stroke Research Ctr., Univ. at Buffalo (United States)
Univ. at Buffalo (United States)
A. Dohatcu, Toshiba Stroke Research Ctr., Univ. at Buffalo (United States)
Univ. at Buffalo (United States)
A. Jain, Toshiba Stroke Research Ctr., Univ. at Buffalo (United States)
Univ. at Buffalo (United States)
C. Keleshis, Toshiba Stroke Research Ctr., Univ. at Buffalo (United States)
Univ. at Buffalo (United States)
K. R. Hoffmann, Toshiba Stroke Research Ctr., Univ. at Buffalo (United States)
Univ. at Buffalo (United States)
D. R. Bednarek, Toshiba Stroke Research Ctr., Univ. at Buffalo (United States)
Univ. at Buffalo (United States)
S. Rudin, Toshiba Stroke Research Ctr., Univ. at Buffalo (United States)
Univ. at Buffalo (United States)


Published in SPIE Proceedings Vol. 7258:
Medical Imaging 2009: Physics of Medical Imaging
Ehsan Samei; Jiang Hsieh, Editor(s)

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