TY - GEN
T1 - Motion artifacts in kidney stone imaging using dual-energy CT. A phantom study comparing single-source and dual-source scanners
AU - Ibrahim, El Sayed
AU - Pooley, Robert
AU - Cernigliaro, Joseph
AU - Bridges, Mellena
AU - Williams, James
AU - Haley, William
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/7/21
Y1 - 2015/7/21
N2 - Computed tomography (CT) has been established as the method of choice for imaging kidney stones with high sensitivity and accuracy. Further, dual-energy CT (DECT) showed the capability of differentiating uric-acid (UA) from non-UA stones with 90-100% accuracy. DECT depends on acquiring two images at different energy levels, from which a material-specific color-coded image is generated. With the invention of dual-source (DS) scanners, both low- and high-energy images are acquired simultaneously. However, DECT can also be performed by sequential acquisition of both images on single-source (SS) scanners. Although motion artifacts generally result in distorted anatomy and blurring, in stone imaging they may lead to stone misclassification. In this study, we investigate the effects of motion artifacts on stone classification using both SS and DS DECT. The results show that stone misclassification may be significantly higher in SS DECT, especially when multiple stones with different types lie in close proximity.
AB - Computed tomography (CT) has been established as the method of choice for imaging kidney stones with high sensitivity and accuracy. Further, dual-energy CT (DECT) showed the capability of differentiating uric-acid (UA) from non-UA stones with 90-100% accuracy. DECT depends on acquiring two images at different energy levels, from which a material-specific color-coded image is generated. With the invention of dual-source (DS) scanners, both low- and high-energy images are acquired simultaneously. However, DECT can also be performed by sequential acquisition of both images on single-source (SS) scanners. Although motion artifacts generally result in distorted anatomy and blurring, in stone imaging they may lead to stone misclassification. In this study, we investigate the effects of motion artifacts on stone classification using both SS and DS DECT. The results show that stone misclassification may be significantly higher in SS DECT, especially when multiple stones with different types lie in close proximity.
KW - Dual-energy computed tomography
KW - Kidney stones
KW - Motion artifacts
KW - Nephrolithiasis
UR - http://www.scopus.com/inward/record.url?scp=84944317590&partnerID=8YFLogxK
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U2 - 10.1109/ISBI.2015.7164078
DO - 10.1109/ISBI.2015.7164078
M3 - Conference contribution
AN - SCOPUS:84944317590
T3 - Proceedings - International Symposium on Biomedical Imaging
SP - 1159
EP - 1162
BT - 2015 IEEE 12th International Symposium on Biomedical Imaging, ISBI 2015
PB - IEEE Computer Society
T2 - 12th IEEE International Symposium on Biomedical Imaging, ISBI 2015
Y2 - 16 April 2015 through 19 April 2015
ER -