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Lesion Quantification in Dual-Modality Mammotomography

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5 Author(s)
Heng Li ; Dept. of Electr. & Comput. Eng., Virginia Univ., Charlottesville, VA ; Zheng, Yibin ; More, M.J. ; Goodale, P.J.
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This paper describes a novel x-ray/SPECT dual modality breast imaging system that provides 3D structural and functional information. While only a limited number of views on one side of the breast can be acquired due to mechanical and time constraints, we developed a technique to compensate for the limited angle artifact in reconstruction images and accurately estimate both the lesion size and radioactivity concentration. Various angular sampling strategies were evaluated using both simulated and experimental data. It was demonstrated that quantification of lesion size to an accuracy of 10% and quantification of radioactivity to an accuracy of 20% are feasible from limited-angle data acquired with clinically practical dosage and acquisition time

Published in:

Nuclear Science, IEEE Transactions on  (Volume:54 ,  Issue: 1 )

Date of Publication:

Feb. 2007

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