TY - GEN
T1 - Determination of system geometrical parameters and consistency between scans for contrast-enhanced digital breast tomosynthesis
AU - Scaduto, David A.
AU - Zhao, Wei
PY - 2012
Y1 - 2012
N2 - Digital breast tomosynthesis (DBT) requires precise knowledge of acquisition geometry for accurate image reconstruction. Further, image subtraction techniques employed in dual-energy contrast-enhanced tomosynthesis require that scans be performed under nearly identical geometrical conditions. A geometrical calibration algorithm is developed to investigate system geometry and geometrical consistency of image acquisition between consecutive digital breast tomosynthesis scans, according to requirements for dual-energy contrast-enhanced tomosynthesis. Investigation of geometrical accuracy and consistency on a prototype DBT unit reveals accurate angular measurement, but potentially clinically significant differences in acquisition angles between scans. Further, a slight gantry wobble is observed, suggesting the need for incorporation of gantry wobble into image reconstruction, or improvements to system hardware.
AB - Digital breast tomosynthesis (DBT) requires precise knowledge of acquisition geometry for accurate image reconstruction. Further, image subtraction techniques employed in dual-energy contrast-enhanced tomosynthesis require that scans be performed under nearly identical geometrical conditions. A geometrical calibration algorithm is developed to investigate system geometry and geometrical consistency of image acquisition between consecutive digital breast tomosynthesis scans, according to requirements for dual-energy contrast-enhanced tomosynthesis. Investigation of geometrical accuracy and consistency on a prototype DBT unit reveals accurate angular measurement, but potentially clinically significant differences in acquisition angles between scans. Further, a slight gantry wobble is observed, suggesting the need for incorporation of gantry wobble into image reconstruction, or improvements to system hardware.
KW - contrast-enhanced tomosynthesis
KW - dual-energy
KW - flat-panel detector
KW - geometric calibration
KW - tomosynthesis
UR - https://www.scopus.com/pages/publications/84864863332
U2 - 10.1007/978-3-642-31271-7_4
DO - 10.1007/978-3-642-31271-7_4
M3 - Conference contribution
AN - SCOPUS:84864863332
SN - 9783642312700
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 24
EP - 31
BT - Breast Imaging - 11th International Workshop, IWDM 2012, Proceedings
T2 - 11th International Workshop on Breast Imaging, IWDM 2012
Y2 - 8 July 2012 through 11 July 2012
ER -